master

Document Sample
master Powered By Docstoc
					“high” antenna                     Rec. ITU-R P.1546-2      Method for point-to-area predictions for
                                                           terrestrial services in the frequency range
                                                                       30 MHz to 3 000 MHz
“hot-spot” regions                 Rec. ITU-R P.843-1    Communication by Meteor-burst
                                                         Propagation
“low” antenna                      Rec. ITU-R P.1546-2      Method for point-to-area predictions for
                                                           terrestrial services in the frequency range
                                                                       30 MHz to 3 000 MHz
“narrow-beam” approximation        Rec. ITU-R P.620-6    Propagation data required for the evaluation
                                                         of coordination distances in the frequency
                                                         range 100 MHz to 105 GHz
2 800 MHz solar radio noise flux   Rec. ITU-R P.371-8    Choice of Indices for Long-Term Ionospheric
                                                         Predictions
2E MUF                             Rec.ITU-R P. 434-6    ITU-R Reference Ionospheric
                                                         Characteristics and Methods of Basic MUF
                                                         Operational MUF and Ray-path Prediction

absorption                         Rec. ITU-R P.531-8    Ionospheric propagation data and prediction
                                   Rec. ITU-R P.533-8    methods required for the design of
                                   Rec. ITU-R P.618-8    satellite services and systems
                                   Rec. ITU-R P.619-1
                                   Rec. ITU-R P.679-3
                                   Rec. ITU-R P.680-3
                                   Rec. ITU-R P.843-1
                                   Rec. ITU-R P.845-3
                                   Rec. ITU-R P.846-1
                                   Rec. ITU-R P.1622-0
                                   Rec. ITU-R P.532-1
acceptance criteria                Rec.ITUR P. 311-12    Acquisition, presentation and analysis of
                                                         data in studies of tropospheric propagation

adequate standard                  Rec.ITUR P. 311-12    Acquisition, presentation and analysis of
                                                         data in studies of tropospheric propagation

adjacent channel signal            Rec. ITU-R P.845-3    HF field strength measurement

adjacent frequency channels        Rec.ITU-R P. 435-7    Sky-wave field-strenght prediction method
                                                         for Broadcasting Service in the Frequency
                                                         range 150 to 1600KHz.
adjacent-channel transmissions     Rec. ITU-R P.842-3    Computation of reliability and compatibility of
                                                         HF radio systems
adjoint factor                     Rec. ITU-R P.684-4    Prediction of field strength at frequencies
                                                         below about 150 kHz
ambipolar diffusion                Rec. ITU-R P.843-1    Communication by Meteor-burst
                                                         Propagation
amplitude probability              Rec. ITU-R P.372-8    Radio Noise
distribution(APD)
amplitude scintillation            Rec. ITU-R P.1622-0   Prediction methods required for the design
                                                         of Earth-space systems operating between
                                                         20 THz and 375 THz
angle diversity                  Rec. ITU-R P.530-11         Propagation data and prediction methods
                                 Rec. ITU-R P.617-1         required for the design of terrestrial line-of-
                                                                           sight systems
angle of arrival                 Rec.   ITU-R   P.530-11   Propagation data and prediction methods
                                 Rec.   ITU-R   P.531-8    required for the design of Earth-space
                                 Rec.   ITU-R   P.618-8    telecommunication systems
                                 Rec.   ITU-R   P.679-3
                                 Rec.   ITU-R   P.680-3
                                 Rec.   ITU-R   P.684-4
                                 Rec.   ITU-R   P.1060-0
                                 Rec.   ITU-R   P.1622-0
angle of departure               Rec.   ITU-R   P.684-4    Prediction of field strength at frequencies
                                                           below about 150 kHz
angle of diffractions            Rec.   ITU-R   P.526-10   Propagation by Diffraction
angle of incidence               Rec.   ITU-R   P.533-8    Communication by Meteor-burst
                                 Rec.   ITU-R   P.684-4    Propagation
                                 Rec.   ITU-R   P.843-1
angle-of-launch                  Rec.   ITU-R   P.530-11     Propagation data and prediction methods
                                                            required for the design of terrestrial line-of-
                                                                            sight systems
anisotropy                       Rec. ITU-R P.531-8        Ionospheric propagation data and prediction
                                 Rec. ITU-R P.684-4        methods required for the design of
                                                           satellite services and systems
annual median night-time field   Rec.ITU-R P. 435-7        Sky-wave field-strenght prediction method
strength                                                   for Broadcasting Service in the Frequency
                                                           range 150 to 1600KHz.
annual median of half-hourly     Rec.ITU-R P. 435-7        Sky-wave field-strenght prediction method
median field strengths                                     for Broadcasting Service in the Frequency
(dB(mV/m))                                                 range 150 to 1600KHz.
annual statistics of sky noise   Rec.ITUR P. 311-12        Acquisition, presentation and analysis of
temperature                                                data in studies of tropospheric propagation

annual worst-month               Rec.   ITU-R   P.581-2    The concept of the worst-month
anomalous propagation            Rec.   ITU-R   P.452-12   Prediction procedure for the evaluation of
                                 Rec.   ITU-R   P.680-3    microwave interference between stations on
                                 Rec.   ITU-R   P.620-6    the surface of the Earth at frequencies
                                                           above about 0.7 GHz*
antenna decoupling               Rec. ITU-R P.530-11         Propagation data and prediction methods
                                                            required for the design of terrestrial line-of-
                                                                           sight systems
antenna discrimination           Rec. ITU-R P.530-11         Propagation data and prediction methods
                                                            required for the design of terrestrial line-of-
                                                                           sight systems
antenna gain                     Rec. ITU-R P.452-12       Prediction procedure for the evaluation of
                                 Rec. ITU-R P.617-1        microwave interference between stations on
                                 Rec. ITU-R P.682-1        the surface of the Earth at frequencies
                                 Rec. ITU-R P.845-3        above about 0.7 GHz*
                                 Rec. ITU-R P.1546-2
antenna height                   Rec. ITU-R P.452-12       Prediction procedure for the evaluation of
                                                           microwave interference between stations on
                                                           the surface of the Earth at frequencies
                                                           above about 0.7 GHz*
antenna height corrections         Rec.ITU-R P.1406-0    Propagation effects relating to terrestrial
                                                         land mobile service in the VHF and UHF
                                                         bands
antenna noise                      Rec. ITU-R P.372-8    Radio Noise
antenna pattern                    Rec. ITU-R P.372-8    Radio Noise
aparent boresight angle            Rec. ITU-R P.834-6    Effects of Tropospheric Refaction on the
                                                         Radiowave Propagation
area of the receiver               Rec. ITU-R P.1621-1   Propagation data required for the design for
                                                         Earth-space systems operating
area reliability                   Rec. ITU-R P.842-3    Computation of reliability and compatibility of
                                                         HF radio systems
area service compatibility (ASC)   Rec. ITU-R P.842-3    Computation of reliability and compatibility of
                                                         HF radio systems
area-coverage prediction           Rec. ITU-R P.1546-2      Method for point-to-area predictions for
methods                                                    terrestrial services in the frequency range
                                                                       30 MHz to 3 000 MHz
atmosphere noise                   Rec. ITU-R P.372-8    Radio Noise
atmosphere refraction              Rec. ITU-R P.526-10   Propagation by Diffraction


atmospheric absorption             Rec. ITU-R P.1621-1   Propagation data required for the design for
                                                         Earth-space systems operating
atmospheric attenuation            Rec. ITU-R P.1322-0   Radiometric estimation of atmospheric
                                                         attenuation
atmospheric coherence length       Rec. ITU-R P.1622-0   Prediction methods required for the design
                                                         of Earth-space systems operating between
                                                         20 THz and 375 THz
atmospheric irregularities         Rec. ITU-R P.617-1    PROPAGATION PREDICTION
                                                         TECHNIQUES AND DATA REQUIRED
                                                         FOR THE DESIGN OF TRANS-
                                                         HORIZON RADIO-RELAY SYSTEMS
atmospheric multipath              Rec. ITU-R P.530-11     Propagation data and prediction methods
                                                          required for the design of terrestrial line-of-
                                                                           sight systems
atmospheric noise                  Rec. ITU-R P.842-3    Computation of reliability and compatibility of
                                                         HF radio systems
atmospheric pressure (hPa)         Rec. ITU-R P.1621-1   Propagation data required for the design for
                                                         Earth-space systems operating
atmospheric refractive index       Rec. ITU-R P.1546-2      Method for point-to-area predictions for
                                   Rec. ITU-R P.1621-1     terrestrial services in the frequency range
                                                                       30 MHz to 3 000 MHz
atmospheric wave                   Rec. ITU-R P.530-11     Propagation data and prediction methods
                                                          required for the design of terrestrial line-of-
                                                                           sight systems
attenuation in vegetation          Rec.ITU-R P.1406-0    Propagation effects relating to terrestrial
                                                         land mobile service in the VHF and UHF
                                                         bands
attenuation or fade event          Rec. ITU-R P.530-11     Propagation data and prediction methods
                                                          required for the design of terrestrial line-of-
                                                                           sight systems
attenuation, loss                 Rec.   ITU-R   P.452-12   Prediction procedure for the evaluation of
                                  Rec.   ITU-R   P.530-11   microwave interference between stations on
                                  Rec.   ITU-R   P.532-1    the surface of the Earth at frequencies
                                  Rec.   ITU-R   P.534-4    above about 0.7 GHz*
                                  Rec.   ITU-R   P.618-8
                                  Rec.   ITU-R   P.679-3
                                  Rec.   ITU-R   P.680-3
                                  Rec.   ITU-R   P.681-6
                                  Rec.   ITU-R   P.1060-0
                                  Rec.   ITU-R   P.1409-0
                                  Rec.   ITU-R   P.1623-1
aural identification              Rec.   ITU-R   P.845-3    HF field strength measurement
auroral                           Rec.   ITU-R   P.531-8    Ionospheric propagation data and prediction
                                  Rec.   ITU-R   P.533-8    methods required for the design of
                                  Rec.   ITU-R   P.619-1    satellite services and systems
                                  Rec.   ITU-R   P.679-3
                                  Rec.   ITU-R   P.843-1
                                  Rec.   ITU-R   P.844-1
auroral electrojet                Rec.   ITU-R   P.532-1    Ionospheric Effects and Operational
                                                            Considerations Associated with the Artificial
                                                            Modification of the Ionosphere and the
                                                            Radio Wave Channel
auroral zones                     Rec. ITU-R P.618-8        Propagation data and prediction methods
                                  Rec. ITU-R P.680-3        required for the design of Earth-space
                                  Rec. ITU-R P.682-1        telecommunication systems
auxiliary contours                Rec. ITU-R P.620-6        Propagation data required for the evaluation
                                  Rec.ITU-R P.1448-0        of coordination distances in the frequency
                                                            range 100 MHz to 105 GHz
available noise power reference   Rec. ITU-R P.372-8        Radio Noise
temperature (to)
average annual worst-month        Rec. ITU-R P.581-2        The concept of the worst-month
average value of atmospheric      Rec. ITU-R P.453-9        The Radio refractive index its formulae and
refractivity                                                refractive data
azimuth                           Rec. ITU-R P.619-1        Propagation Data required for the Evaluation
                                  Rec. ITU-R P.620-6        of Interference between Stations in Space
                                  Rec. ITU-R P.845-3        ant those on the Surface of the Earth

azimuth angle                     Rec.   ITU-R   P.533-8    HF propagation prediction method
                                  Rec.   ITU-R   P.679-3
                                  Rec.   ITU-R   P.681-6
b values for various propagations Rec.   ITU-R   P.841-4    Conversion of annual statistics to worst-
effects and locations                                       month statistics

back scatter                      Rec. ITU-R P.532-1        Propagation Data and Prediction Methods
                                  Rec. ITU-R P.1409-0       Required for the Design of Systems Using
                                                            High Altitude Platform Stations At About 47
                                                            GHz
background                        Rec. ITU-R P.842-3        Computation of reliability and compatibility of
                                                            HF radio systems
background atmosphere radio       Rec. ITU-R P.372-8        Radio Noise
noise
background level                  Rec. ITU-R P.845-3        HF field strength measurement
background noise                    Rec. ITU-R P.845-3        HF field strength measurement
                                    Rec. ITU-R P.1622-0
background noise power              Rec. ITU-R P.1621-1       Propagation data required for the design for
                                                              Earth-space systems operating
background noise temperature        Rec. ITU-R P.618-8        Propagation data and prediction methods
                                                              required for the design of Earth-space
                                                              telecommunication systems
balanced site diversity             Rec. ITU-R P.618-8        Propagation data and prediction methods
                                                              required for the design of Earth-space
                                                              telecommunication systems
bandwidth                           Rec. ITU-R P.843-1        Communication by Meteor-burst
                                    Rec. ITU-R P.845-3        Propagation
bandwidth of the receiver           Rec. ITU-R P.1621-1       Propagation data required for the design for
                                                              Earth-space systems operating
basic circuit reliability (BCR)     Rec. ITU-R P.842-3        Computation of reliability and compatibility of
                                                              HF radio systems
basic communications reliability    Rec. ITU-R P.842-3        Computation of reliability and compatibility of
(R)                                                           HF radio systems
basic MUF                           Rec. ITU-R P.373-8        Definitions of Maximum and Minimum
                                                              Transmission Frequencies
basic path reliability (BPR)        Rec. ITU-R P.842-3        Computation of reliability and compatibility of
                                                              HF radio systems
basic reception reliability (BRR)   Rec. ITU-R P.842-3        Computation of reliability and compatibility of
                                                              HF radio systems
basic reliability computation       Rec. ITU-R P.842-3        Computation of reliability and compatibility of
                                                              HF radio systems
basic service reliability (BSR)     Rec. ITU-R P.842-3        Computation of reliability and compatibility of
                                                              HF radio systems
basic transmission loss             Rec. ITU-R P.619-1        Propagation Data required for the Evaluation
                                    Rec. ITU-R P.620-6        of Interference between Stations in Space
                                    Rec. ITU-R P.843-1        ant those on the Surface of the Earth

beam avoidance angle                Rec. ITU-R P.620-6        Propagation data required for the evaluation
                                                              of coordination distances in the frequency
                                                              range 100 MHz to 105 GHz
beam spreading                      Rec.   ITU-R   P.530-11   Propagation Data required for the Evaluation
                                    Rec.   ITU-R   P.618-8    of Interference between Stations in Space
                                    Rec.   ITU-R   P.619-1    ant those on the Surface of the Earth
                                    Rec.   ITU-R   P.1622-0
beam wander                         Rec.   ITU-R   P.1622-0   Prediction methods required for the design
                                                              of Earth-space systems operating between
                                                              20 THz and 375 THz
beamwidth                           Rec. ITU-R P.1622-0       Prediction methods required for the design
                                                              of Earth-space systems operating between
                                                              20 THz and 375 THz
bi-linear interpolation             Rec. ITU-R P.1510-0       Annual mean surface temperature
bistatic radar equation             Rec. ITU-R P.620-6        Propagation data required for the evaluation
                                                              of coordination distances in the frequency
                                                              range 100 MHz to 105 GHz
bistatic scatter                Rec.ITU-R P.1412-0        Propagation data for the evaluation of
                                                          coordination between Earth station in
                                                          working in the bidirectionally allocated
                                                          frequency bands
bit error ratio (BER)           Rec. ITU-R P.530-11          Propagation data and prediction methods
                                                            required for the design of terrestrial line-of-
                                                                           sight systems
blockage                        Rec. ITU-R P.681-6        Propagation data required for the design of
                                                          Earth-space land mobile telecommunication
                                                          systems
body loss                       Rec.ITU-R P.1406-0        Propagation effects relating to terrestrial
                                                          land mobile service in the VHF and UHF
                                                          bands
boresight                       Rec.   ITU-R   P.530-11      Propagation data and prediction methods
                                Rec.   ITU-R   P.618-8      required for the design of terrestrial line-of-
                                Rec.   ITU-R   P.682-1                     sight systems
                                Rec.   ITU-R   P.680-3
boundary of geometric shadow    Rec.   ITU-R   P.526-10   Propagation by Diffraction
brightness temperature          Rec.   ITU-R   P.372-8    Radio Noise
brightness temperature due to   Rec.   ITU-R   P.372-8    Radio Noise
extra-terrestre sources
broadband wireless              Rec.ITU-R P.1410-3        Propagation data and prediction methods
access (BWA).                                             required for the design of terrestrial
                                                          broadband millimetric radio access systems
                                                          operating in frequency range of about 20-50
                                                          GHz
broadcast / broadcasting        Rec. ITU-R P.525-2        Propagation data required for the design of
                                Rec. ITU-R P.679-3        broadcasting-satellite systems
broadcast reliability           Rec. ITU-R P.842-3        Computation of reliability and compatibility of
                                                          HF radio systems
broadcast services in the LF and Rec.ITU-R P. 435-7       Sky-wave field-strenght prediction method
MF bands                                                  for Broadcasting Service in the Frequency
                                                          range 150 to 1600KHz.
broadside                       Rec. ITU-R P.684-4        Prediction of field strength at frequencies
                                                          below about 150 kHz
building entry loss             Rec.ITUR P. 311-12        Acquisition, presentation and analysis of
                                Rec. ITU-R P.679-3        data in studies of tropospheric propagation

business curves                 Rec.   ITU-R   P.372-8    Radio Noise
calculation by nomograms        Rec.   ITU-R   P.526-10   Propagation by Diffraction
carrier to noise ratio (C/N)    Rec.   ITU-R   P.530-11   Propagation data required for the design of
                                Rec.   ITU-R   P.679-3    broadcasting-satellite systems
                                Rec.   ITU-R   P.680-3
carrier-to-interference ratio   Rec.   ITU-R   P.530-11     Propagation data and prediction methods
                                                           required for the design of terrestrial line-of-
                                                                          sight systems
cascaded cylinder method        Rec. ITU-R P.526-10       Propagation by Diffraction
cascaded knife edge method      Rec. ITU-R P.526-10       Propagation by Diffraction
celestial radio sources         Rec. ITU-R P.372-8        Radio Noise
centrally-fed cell               Rec.ITU-R P.1410-3        Propagation data and prediction methods
                                                           required for the design of terrestrial
                                                           broadband millimetric radio access systems
                                                           operating in frequency range of about 20-50
                                                           GHz
channel                          Rec. ITU-R P.452-12       Prediction procedure for the evaluation of
                                                           microwave interference between stations on
                                                           the surface of the Earth at frequencies
                                                           above about 0.7 GHz*
channel capacity, C              Rec. ITU-R P.843-1        Communication by Meteor-burst
                                                           Propagation
channel distortion               Rec.ITU-R P.1410-3        Propagation data and prediction methods
                                                           required for the design of terrestrial
                                                           broadband millimetric radio access systems
                                                           operating in frequency range of about 20-50
                                                           GHz
channel impulse response (CIR) Rec.ITU-R P.1406-0          Propagation effects relating to terrestrial
                                                           land mobile service in the VHF and UHF
                                                           bands
circuit compatibility (CC)       Rec. ITU-R P.842-3        Computation of reliability and compatibility of
                                                           HF radio systems
circuit reliability              Rec. ITU-R P.842-3        Computation of reliability and compatibility of
                                                           HF radio systems
circular polarization            Rec.   ITU-R   P.525-2    Calculation of Free Space Attenuation
                                 Rec.   ITU-R   P.530-11
                                 Rec.   ITU-R   P.618-8
                                 Rec.   ITU-R   P.680-3
                                 Rec.   ITU-R   P.682-1
                                 Rec.   ITU-R   P.845-3
clear air, clear sky             Rec.   ITU-R   P.452-12   Prediction procedure for the evaluation of
                                 Rec.   ITU-R   P.530-11   microwave interference between stations on
                                 Rec.   ITU-R   P.618-8    the surface of the Earth at frequencies
                                 Rec.   ITU-R   P.619-1    above about 0.7 GHz*
                                 Rec.   ITU-R   P.620-6
clear line-of-sight condition    Rec.   ITU-R   P.681-6    Propagation data required for the design of
                                                           Earth-space land mobile telecommunication
                                                           systems
clear-air spot measurement data Rec.ITUR P. 311-12         Acquisition, presentation and analysis of
                                                           data in studies of tropospheric propagation

clear-air trans-horizon basic    Rec.ITUR P. 311-12        Acquisition, presentation and analysis of
transmission loss statistitics                             data in studies of tropospheric propagation

climatic                         Rec. ITU-R P.1623-1       Prediction method of fade dynamics on
                                                           Earth-space paths
climatic regions                 Rec. ITU-R P.1546-2          Method for point-to-area predictions for
                                                             terrestrial services in the frequency range
                                                                         30 MHz to 3 000 MHz
climatic zones                   Rec. ITU-R P.618-8        Propagation data and prediction methods
                                                           required for the design of Earth-space
                                                           telecommunication systems
cloud attenuation                Rec. ITU-R P.840-3        Attenuation due to Cloud and Fog
clutter                         Rec. ITU-R P.452-12   Prediction procedure for the evaluation of
                                Rec. ITU-R P.844-1    microwave interference between stations on
                                Rec. ITU-R P.1546-2   the surface of the Earth at frequencies
                                                      above about 0.7 GHz*
clutter height                  Rec. ITU-R P.1546-2      Method for point-to-area predictions for
                                                        terrestrial services in the frequency range
                                                                    30 MHz to 3 000 MHz
clutter loss                    Rec.ITU-R P.1406-0    Propagation effects relating to terrestrial
                                                      land mobile service in the VHF and UHF
                                                      bands
coastal areas                   Rec. ITU-R P.618-8    Propagation data and prediction methods
                                                      required for the design of Earth-space
                                                      telecommunication systems
coastal land                    Rec. ITU-R P.620-6    Propagation data required for the evaluation
                                                      of coordination distances in the frequency
                                                      range 100 MHz to 105 GHz
coastal land zones              Rec. ITU-R P.1546-2      Method for point-to-area predictions for
                                                        terrestrial services in the frequency range
                                                                    30 MHz to 3 000 MHz
co-channal transmission         Rec. ITU-R P.372-8    Radio Noise
                                Rec. ITU-R P.842-3
co-channel interference         Rec. ITU-R P.532-1    Ionospheric Effects and Operational
                                                      Considerations Associated with the Artificial
                                                      Modification of the Ionosphere and the
                                                      Radio Wave Channel
co-channel signal               Rec. ITU-R P.845-3    HF field strength measurement

coherence bandwidth             Rec. ITU-R P.843-1    Communication by Meteor-burst
                                Rec. ITU-R P.846-1    Propagation
coherent transmission systems   Rec. ITU-R P.618-8    Propagation data and prediction methods
                                                      required for the design of Earth-space
                                                      telecommunication systems
cold seas                       Rec. ITU-R P.620-6    Propagation data required for the evaluation
                                Rec.ITU-R P.1448-0    of coordination distances in the frequency
                                                      range 100 MHz to 105 GHz
collision frequency             Rec. ITU-R P.532-1    Ionospheric Effects and Operational
                                Rec. ITU-R P.684-4    Considerations Associated with the Artificial
                                                      Modification of the Ionosphere and the
                                                      Radio Wave Channel
co-located                      Rec. ITU-R P.619-1    Propagation Data required for the Evaluation
                                                      of Interference between Stations in Space
                                                      ant those on the Surface of the Earth

communications reliability      Rec. ITU-R P.842-3    Computation of reliability and compatibility of
                                                      HF radio systems
compatibility                   Rec. ITU-R P.842-3    Computation of reliability and compatibility of
                                                      HF radio systems
computer-data                   Rec.ITUR P. 311-12    Acquisition, presentation and analysis of
                                                      data in studies of tropospheric propagation

conductivity of the ground      Rec. ITU-R P.527-3    Electrical characteristics of the surface of
                                                      the Earth
continental sub-tropical           Rec. ITU-R P.617-1       PROPAGATION PREDICTION
                                                            TECHNIQUES AND DATA REQUIRED
                                                            FOR THE DESIGN OF TRANS-
                                                            HORIZON RADIO-RELAY SYSTEMS
continental temperate              Rec. ITU-R P.617-1       PROPAGATION PREDICTION
                                                            TECHNIQUES AND DATA REQUIRED
                                                            FOR THE DESIGN OF TRANS-
                                                            HORIZON RADIO-RELAY SYSTEMS
control points                     Rec. ITU-R P.533-8       HF propagation prediction method
coordination area                  Rec. ITU-R P.620-6       Propagation data required for the evaluation
                                                            of coordination distances in the frequency
                                                            range 100 MHz to 105 GHz
coordination contour               Rec. ITU-R P.620-6       Propagation data required for the evaluation
                                                            of coordination distances in the frequency
                                                            range 100 MHz to 105 GHz
coordination distance              Rec. ITU-R P.620-6       Propagation Data and Prediction Methods
                                   Rec. ITU-R P.1409-0      Required for the Design of Systems Using
                                                            High Altitude Platform Stations At About 47
                                                            GHz
co-polar attenuation (CPA)         Rec. ITU-R P.530-11        Propagation data and prediction methods
                                                             required for the design of terrestrial line-of-
                                                                            sight systems
co-primary allocations             Rec.ITU-R P.1448-0       Determination of the coordination of the area
                                                            around an Earth station the frequency bands
                                                            between 100 MHZ and 105 GHz

corrected measured                 Rec.ITU-R P.1148-1       Standardizing procedure for cmparing
                                                            predicted and oberved HF sky-wave
                                                            observed HF signal intensities and the
                                                            presentation of such comparisons
correlation bandwidth              Rec. ITU-R P.682-1       Propagation Data Required for the Design of
                                                            Earth-Space Aeronautical Mobile
                                                            Telecommunication Systems
count                              Rec.ITU-R P.1148-1       Standardizing procedure for comparing
                                                            predicted and oberved HF sky-wave
                                                            observed HF signal intensities and the
                                                            presentation of such comparisons
coupling loss                      Rec. ITU-R P.617-1       PROPAGATION PREDICTION
                                   Rec. ITU-R P.618-8       TECHNIQUES AND DATA REQUIRED
                                   Rec. ITU-R P.845-3       FOR THE DESIGN OF TRANS-
                                                            HORIZON RADIO-RELAY SYSTEMS
critical angle                     Rec. ITU-R P.620-6       Propagation data required for the evaluation
                                                            of coordination distances in the frequency
                                                            range 100 MHz to 105 GHz
critical frequency                 Rec.   ITU-R   P.532-1   Method of Calculating sporatic E Field
                                   Rec.   ITU-R   P.533-8   Strength
                                   Rec.   ITU-R   P.534-4
critical frequency of sporadic-E   Rec.   ITU-R   P.534-4   Method of Calculating sporatic E Field
(foEs)                                                      Strength
critical points                    Rec. ITU-R P.684-4       Prediction of field strength at frequencies
                                                            below about 150 kHz
cross polar interference canceller Rec. ITU-R P.530-11           Propagation data and prediction methods
(XPIC)                                                          required for the design of terrestrial line-of-
                                                                                sight systems
cross-correlation                    Rec.ITU-R P.1406-0        Propagation effects relating to terrestrial
                                                               land mobile service in the VHF and UHF
                                                               bands
cross-modulation                     Rec. ITU-R P.532-1        Ionospheric Effects and Operational
                                                               Considerations Associated with the Artificial
                                                               Modification of the Ionosphere and the
                                                               Radio Wave Channel
cross-polar isolation (XPI)          Rec. ITU-R P.530-11         Propagation data and prediction methods
                                                                required for the design of terrestrial line-of-
                                                                                sight systems
cross-polarization channel           Rec. ITU-R P.531-8        Ionospheric propagation data and prediction
                                                               methods required for the design of
                                                               satellite services and systems
cross-polarization discrimination    Rec.   ITU-R   P.530-11     Propagation data and prediction methods
(XPD)                                Rec.   ITU-R   P.531-8     required for the design of terrestrial line-of-
                                     Rec.   ITU-R   P.618-8                     sight systems
cross-polarization improvement       Rec.   ITU-R   P.530-11     Propagation data and prediction methods
factor (XPIF)                                                   required for the design of terrestrial line-of-
                                                                                sight systems
cumulative distribution function     Rec. ITU-R P.1407-2       Multipath propagation parametrization of its
(CDF)                                                          characteristics
cumulative exceedance                Rec.ITUR P. 311-12        Acquisition, presentation and analysis of
probability                                                    data in studies of tropospheric propagation

cumulative statistics of             Rec.ITUR P. 311-12        Acquisition, presentation and analysis of
propagation phenomena                                          data in studies of tropospheric propagation

cut-off frequency                    Rec.ITUR P. 311-12        Acquisition, presentation and analysis of
                                                               data in studies of tropospheric propagation

cymomotive force                     Rec.ITU-R P. 435-7 Rec. Sky-wave field-strenght prediction method
                                     ITU-R P.525-2 Rec. ITU- for Broadcasting Service in the Frequency
                                     R P.684-4               range 150 to 1600KHz.
D layer                              Rec. ITU-R P.684-4      Prediction of field strength at frequencies
                                                             below about 150 kHz
D regions.                           Rec. ITU-R P.532-1      Ionospheric Effects and Operational
                                                             Considerations Associated with the Artificial
                                                             Modification of the Ionosphere and the
                                                             Radio Wave Channel
data for mobile-satellite services   Rec.ITUR P. 311-12      Acquisition, presentation and analysis of
                                                             data in studies of tropospheric propagation

day-to-day and short-period          Rec.ITU-R P. 435-7        Sky-wave field-strenght prediction method
variations of night-time field                                 for Broadcasting Service in the Frequency
strength                                                       range 150 to 1600KHz.
decay factor                       Rec.ITU-R P.1411-3        Propagation data and prediction methods for
                                                             the planning of short-range outdoor
                                                             radiocommunication systems and radio local
                                                             area networks in the frequency range 300
                                                             MHz to 100 GHz
decay-rate                         Rec.ITU-R P.1411-3        Propagation data and prediction methods for
                                                             the planning of short-range outdoor
                                                             radiocommunication systems and radio local
                                                             area networks in the frequency range 300
                                                             MHz to 100 GHz
decile                             Rec.   ITU-R   P.372-8    Radio Noise
                                   Rec.   ITU-R   P.373-8
                                   Rec.   ITU-R   P.845-3
decile deviation                   Rec.   ITU-R   P.372-8    Radio Noise
                                   Rec.   ITU-R   P.533-8
declination(d)                     Rec.   ITU-R   P.372-8    Radio Noise
deep space                         Rec.   ITU-R   P.1622-0   Prediction methods required for the design
                                                             of Earth-space systems operating between
                                                             20 THz and 375 THz
defocus                            Rec.   ITU-R   P.530-11   Ionospheric propagation data and prediction
                                   Rec.   ITU-R   P.531-8    methods required for the design of
                                   Rec.   ITU-R   P.619-1    satellite services and systems
delay doppler spread function      Rec.   ITU-R   P.1407-2   Multipath propagation parametrization of its
                                                             characteristics
delay spread                       Rec. ITU-R P.682-1        Communication by Meteor-burst
                                   Rec. ITU-R P.843-1        Propagation
delay window                       Rec.ITU-R P.1321-0        Propagation factor affecting systems using
                                                             digital modulation techniques at LF and MF

demodulation                       Rec. ITU-R P.532-1        Ionospheric Effects and Operational
                                                             Considerations Associated with the Artificial
                                                             Modification of the Ionosphere and the
                                                             Radio Wave Channel
dense urban area                   Rec. ITU-R P.1546-2           Method for point-to-area predictions for
                                                               terrestrial services in the frequency range
                                                                           30 MHz to 3 000 MHz
depolarization                     Rec. ITU-R P.618-8        Propagation data and prediction methods
                                   Rec. ITU-R P.679-3        required for the design of Earth-space
                                                             telecommunication systems
desert                             Rec. ITU-R P.617-1        PROPAGATION PREDICTION
                                                             TECHNIQUES AND DATA REQUIRED
                                                             FOR THE DESIGN OF TRANS-
                                                             HORIZON RADIO-RELAY SYSTEMS
determinantal equation (i.e. the   Rec. ITU-R P.684-4        Prediction of field strength at frequencies
modal equation)                                              below about 150 kHz
Deygout method                     Rec. ITU-R P.526-10       Propagation by Diffraction
differential attenuation           Rec. ITU-R P.619-1        Propagation Data required for the Evaluation
                                                             of Interference between Stations in Space
                                                             ant those on the Surface of the Earth
differential fading                  Rec. ITU-R P.680-3      Propagation data required for the design of
                                                             earth-space maritime mobile
                                                             telecommunication systems
differential time delay              Rec. ITU-R P.684-4      Prediction of field strength at frequencies
                                                             below about 150 kHz
diffraction                          Rec. ITU-R P.452-12     Prediction procedure for the evaluation of
                                     Rec. ITU-R P.531-8      microwave interference between stations on
                                     Rec. ITU-R P.617-1      the surface of the Earth at frequencies
                                     Rec. ITU-R P.619-1      above about 0.7 GHz*
                                     Rec. ITU-R P.620-6
                                     Rec. ITU-R P.684-4
                                     Rec. ITU-R P.1546-2
diffraction angle(f2)                Rec. ITU-R P.526-10     Propagation by Diffraction
diffraction by retangular            Rec. ITU-R P.526-10     Propagation by Diffraction
apertures
diffraction by thin screens          Rec. ITU-R P.526-10     Propagation by Diffraction
diffraction fading                   Rec. ITU-R P.530-11       Propagation data and prediction methods
                                                              required for the design of terrestrial line-of-
                                                                             sight systems
diffraction field streght formulae Rec.   ITU-R   P.526-10   Propagation by Diffraction
diffraction Loss                   Rec.   ITU-R   P.526-10   Propagation by Diffraction
                                   Rec.   ITU-R   P.530-11
diffraction over a spherical Earth Rec.   ITU-R   P.526-10   Propagation by Diffraction

diffraction overfinitly conductivity Rec. ITU-R P.526-10     Propagation by Diffraction
wedge
diffraction path                     Rec. ITU-R P.526-10     Propagation by Diffraction
diffraction theory                   Rec. ITU-R P.1621-1     Propagation data required for the design for
                                                             Earth-space systems operating
diffraction Zone                     Rec. ITU-R P.526-10     Propagation by Diffraction
diffuse reflections                  Rec. ITU-R P.530-11       Propagation data and prediction methods
                                                              required for the design of terrestrial line-of-
                                                                             sight systems
diffusely-scattered                  Rec. ITU-R P.682-1      Propagation Data Required for the Design of
                                                             Earth-Space Aeronautical Mobile
                                                             Telecommunication Systems
digital quantization                 Rec. ITU-R P.845-3      HF field strength measurement

digital systems                      Rec. ITU-R P.372-8      Radio Noise
dip angle                            Rec. ITU-R P.534-4      Method of Calculating sporatic E Field
                                                             Strength
dip equator                          Rec. ITU-R P.534-4      Method of Calculating sporatic E Field
                                                             Strength
directional antenna                  Rec. ITU-R P.372-8      Radio Noise
discontinuities                      Rec. ITU-R P.1546-2        Method for point-to-area predictions for
                                                               terrestrial services in the frequency range
                                                                           30 MHz to 3 000 MHz
discontinuity                        Rec. ITU-R P.684-4      Prediction of field strength at frequencies
                                                             below about 150 kHz
discrete cosine                      Rec. ITU-R P.1058-2     Digital topographic database for propagation
transformation(DCT)                                          studies
dispersion                       Rec.   ITU-R   P.531-8    Ionospheric propagation data and prediction
                                 Rec.   ITU-R   P.618-8    methods required for the design of
                                 Rec.   ITU-R   P.679-3    satellite services and systems
dispersive effects               Rec.   ITU-R   P.676-7    Attenuation by atmospheric gases
dissipated                       Rec.   ITU-R   P.1060-0   Propagation factors affecting frequency
                                                           sharing in HF terrestrial systems
distortion                       Rec.   ITU-R   P.530-11     Propagation data and prediction methods
                                 Rec.   ITU-R   P.680-3     required for the design of terrestrial line-of-
                                 Rec.   ITU-R   P.845-3                     sight systems
distributuion*                   Rec.   ITU-R   P.452-12   Prediction procedure for the evaluation of
                                                           microwave interference between stations on
                                                           the surface of the Earth at frequencies
                                                           above about 0.7 GHz*

disturbing wave                  Rec. ITU-R P.532-1        Ionospheric Effects and Operational
                                                           Considerations Associated with the Artificial
                                                           Modification of the Ionosphere and the
                                                           Radio Wave Channel
divergence factor                Rec.   ITU-R   P.684-4    Prediction of field strength at frequencies
                                 Rec.   ITU-R   P.530-11   below about 150 kHz
diversity                        Rec.   ITU-R   P.452-12   Prediction procedure for the evaluation of
                                 Rec.   ITU-R   P.617-1    microwave interference between stations on
                                 Rec.   ITU-R   P.1409-0   the surface of the Earth at frequencies
                                                           above about 0.7 GHz*
diversity gain                   Rec. ITU-R P.618-8        Propagation data and prediction methods
                                                           required for the design of Earth-space
                                                           telecommunication systems
doppler effects                  Rec. ITU-R P.531-8        Ionospheric propagation data and prediction
                                                           methods required for the design of
                                                           satellite services and systems
doppler frequency shift          Rec. ITU-R P.843-1        Communication by Meteor-burst
                                                           Propagation
doppler shift                    Rec. ITU-R P.1060-0       Propagation factors affecting frequency
                                                           sharing in HF terrestrial systems
doppler spectra                  Rec. ITU-R P.1407-2       Multipath propagation parametrization of its
                                                           characteristics
doppler spreads                  Rec. ITU-R P.682-1        Propagation Data Required for the Design of
                                                           Earth-Space Aeronautical Mobile
                                                           Telecommunication Systems
double isolated edges            Rec. ITU-R P.526-10       Propagation by Diffraction
downlink                         Rec. ITU-R P.618-8        Multipath propagation parametrization of its
                                 Rec. ITU-R P.680-3        characteristics
                                 Rec. ITU-R P.1407-2
down-time                        Rec.ITUR P. 311-12        Acquisition, presentation and analysis of
                                                           data in studies of tropospheric propagation

drop size distribution           Rec. ITU-R P.1623-1       Prediction method of fade dynamics on
                                                           Earth-space paths
dry air molar mass               Rec. ITU-R P.834-6        Effects of Tropospheric Refaction on the
                                                           Radiowave Propagation
dry atmosphere for attenuation   Rec. ITU-R P.835-4        Reference Standard Atmosphere
conditions
ducting                          Rec.   ITU-R   P.530-11   Prediction procedure for the evaluation of
                                 Rec.   ITU-R   P.452-12   microwave interference between stations on
                                 Rec.   ITU-R   P.617-1    the surface of the Earth at frequencies
                                 Rec.   ITU-R   P.619-1    above about 0.7 GHz*
                                 Rec.   ITU-R   P.620-6
                                 Rec.   ITU-R   P.1409-0
ducting layers                   Rec.   ITU-R   P.834-6  Effects of Tropospheric Refaction on the
                                                         Radiowave Propagation
duration events                  Rec. ITU-R P.681-6      Propagation data required for the design of
                                                         Earth-space land mobile telecommunication
                                                         systems
dynamic effects                  Rec. ITU-R P.833-5      Attenuation in Vegetation
dynamic frequency sharing        Rec. ITU-R P.1060-0     Propagation factors affecting frequency
                                                         sharing in HF terrestrial systems
E layer / E-layer                Rec. ITU-R P.371-8      Method of Calculating sporatic E Field
                                 Rec.ITU-R P. 434-6 Rec. Strength
                                 ITU-R P.533-8 Rec. ITU-
                                 R P.534-4 Rec. ITU-R
                                 P.684-4
E regions.                       Rec. ITU-R P.532-1      Ionospheric Effects and Operational
                                                         Considerations Associated with the Artificial
                                                         Modification of the Ionosphere and the
                                                         Radio Wave Channel
E(2000)MUF                       Rec.ITU-R P. 434-6      ITU-R Reference Ionospheric
                                                         Characteristics and Methods of Basic MUF
                                                         Operational MUF and Ray-path Prediction

Earth- satellite paths           Rec. ITU-R P.453-9        The Radio refractive index its formulae and
                                                           refractive data
earth station / earth-station    Rec. ITU-R P.620-6        Propagation data required for the evaluation
                                 Rec. ITU-R P.618-8        of coordination distances in the frequency
                                                           range 100 MHz to 105 GHz
Earth-coverage antenna pattern  Rec.    ITU-R   P.372-8    Radio Noise
Earth-space                     Rec.    ITU-R   P.618-8    Propagation data and prediction methods
                                Rec.    ITU-R   P.679-3    required for the design of Earth-space
                                Rec.    ITU-R   P.680-3    telecommunication systems
                                Rec.    ITU-R   P.682-1
Earth-space land mobile systems Rec.    ITU-R   P.681-6    Propagation data required for the design of
                                                           Earth-space land mobile telecommunication
                                                           systems
Earth-space path                 Rec. ITU-R P.676-7        Attenuation by atmospheric gases
Earth-space path data            Rec.ITUR P. 311-12        Acquisition, presentation and analysis of
                                                           data in studies of tropospheric propagation

echo                             Rec. ITU-R P.843-1        Communication by Meteor-burst
                                                           Propagation
echoing area                     Rec. ITU-R P.843-1        Communication by Meteor-burst
                                                           Propagation
echo-time constant               Rec. ITU-R P.843-1        Communication by Meteor-burst
                                                           Propagation
effect of the vertical radiation    Rec.ITU-R P.1321-0        Propagation factor affecting systems using
pattern                                                       digital modulation techniques at LF and MF

effective antenna temperature       Rec. ITU-R P.372-8        Radio Noise
effective atmospheric refractive    Rec. ITU-R P.1621-1       Propagation data required for the design for
index                                                         Earth-space systems operating
effective earth radius/ effective   Rec. ITU-R P.452-12       Prediction procedure for the evaluation of
radius of the Earth                 Rec. ITU-R P.526-10       microwave interference between stations on
                                    Rec. ITU-R P.530-11       the surface of the Earth at frequencies
                                    Rec. ITU-R P.534-4        above about 0.7 GHz*
                                    Rec. ITU-R P.617-1
                                    Rec. ITU-R P.618-8
                                    Rec. ITU-R P.620-6
                                    Rec. ITU-R P.684-4
                                    Rec. ITU-R P.1546-2
effective Earth-radius factor       Rec. ITU-R P.526-10       Propagation by Diffraction
effective emissivity of the         Rec. ITU-R P.372-8        Radio Noise
surface(є)
effective height of the             Rec. ITU-R P.1546-2          Method for point-to-area predictions for
transmitting/base antenna                                       terrestrial services in the frequency range
                                                                            30 MHz to 3 000 MHz
effective height of the turbulence Rec. ITU-R P.1621-1        Propagation data required for the design for
                                   Rec. ITU-R P.1622-0        Earth-space systems operating
effective length                   Rec. ITU-R P.843-1         Communication by Meteor-burst
                                                              Propagation
effective radiated power (e.r.p.)   Rec. ITU-R P.1546-2          Method for point-to-area predictions for
                                    Rec. ITU-R P.532-1          terrestrial services in the frequency range
                                                                            30 MHz to 3 000 MHz
effective radio path length         Rec. ITU-R P.834-6        Effects of Tropospheric Refaction on the
                                                              Radiowave Propagation
effective rain height               Rec. ITU-R P.620-6        Propagation data required for the evaluation
                                                              of coordination distances in the frequency
                                                              range 100 MHz to 105 GHz
effective reflection coefficient    Rec.   ITU-R   P.530-11     Propagation data and prediction methods
                                    Rec.   ITU-R   P.684-4     required for the design of terrestrial line-of-
                                    Rec.   ITU-R   P.372-8                      sight systems
effective surface reflection        Rec.   ITU-R   P.530-11     Propagation data and prediction methods
coefficient                                                    required for the design of terrestrial line-of-
                                                                                sight systems
effective temperature               Rec. ITU-R P.618-8        Propagation data and prediction methods
                                                              required for the design of Earth-space
                                                              telecommunication systems
effective terrain clearance angle   Rec. ITU-R P.1546-2          Method for point-to-area predictions for
                                                                terrestrial services in the frequency range
                                                                            30 MHz to 3 000 MHz
EHF                                 Rec. ITU-R P.530-11         Propagation data and prediction methods
                                                               required for the design of terrestrial line-of-
                                                                                sight systems
eigenangles                         Rec. ITU-R P.684-4        Prediction of field strength at frequencies
                                                              below about 150 kHz
Electrical characteristics          Rec. ITU-R P.527-3        Electrical characteristics of the surface of
                                                              the Earth
Electrical charcteristcs of the   Rec. ITU-R P.526-10   Propagation by Diffraction
surface of the Earth
Electrical field components       Rec. ITU-R P.525-2    Calculation of Free Space Attenuation
Electrical machinery              Rec. ITU-R P.372-8    Radio Noise
Electromagnetic energy            Rec. ITU-R P.1621-1   Propagation data required for the design for
                                                        Earth-space systems operating
electromagnetic interference      Rec. ITU-R P.452-12   Prediction procedure for the evaluation of
                                                        microwave interference between stations on
                                                        the surface of the Earth at frequencies
                                                        above about 0.7 GHz*
electron collisional process      Rec. ITU-R P.532-1    Ionospheric Effects and Operational
                                                        Considerations Associated with the Artificial
                                                        Modification of the Ionosphere and the
                                                        Radio Wave Channel
electron temperature              Rec. ITU-R P.532-1    Ionospheric Effects and Operational
                                                        Considerations Associated with the Artificial
                                                        Modification of the Ionosphere and the
                                                        Radio Wave Channel
Elevated ducts.                   Rec. ITU-R P.453-9    The Radio refractive index its formulae and
                                                        refractive data
Elevated surface                  Rec. ITU-R P.453-9    The Radio refractive index its formulae and
                                                        refractive data
elevation angle                   Rec. ITU-R P.372-8    Radio Noise
                                  Rec. ITU-R P.530-11
                                  Rec. ITU-R P.533-8
                                  Rec. ITU-R P.618-8
                                  Rec. ITU-R P.620-6
                                  Rec. ITU-R P.619-1
                                  Rec. ITU-R P.679-3
                                  Rec. ITU-R P.680-3
                                  Rec. ITU-R P.681-6
                                  Rec. ITU-R P.682-1
                                  Rec. ITU-R P.684-4
                                  Rec. ITU-R P.845-3
                                  Rec. ITU-R P.1060-0
                                  Rec. ITU-R P.1409-0
                                  Rec. ITU-R P.1546-2
                                  Rec. ITU-R P.1622-0
                                  Rec. ITU-R P.1623-1
ELF                               Rec. ITU-R P.532-1    Ionospheric Effects and Operational
                                  Rec. ITU-R P.684-4    Considerations Associated with the Artificial
                                                        Modification of the Ionosphere and the
                                                        Radio Wave Channel
eliptical polarization            Rec. ITU-R P.525-2    Calculation of Free Space Attenuation
elliptically polarized            Rec. ITU-R P.680-3    Propagation data required for the design of
                                                        earth-space maritime mobile
                                                        telecommunication systems
emissions from atmosphere         Rec. ITU-R P.372-8    Radio Noise
gases
empirical correction              Rec. ITU-R P.526-10   Propagation by Diffraction
end fire                          Rec. ITU-R P.684-4    Prediction of field strength at frequencies
                                                        below about 150 kHz
energy absortion by surface         Rec. ITU-R P.527-3        Electrical characteristics of the surface of
obstacles                                                     the Earth
energy loss                         Rec. ITU-R P.527-3        Electrical characteristics of the surface of
                                                              the Earth
enhancement                         Rec.   ITU-R   P.452-12   Prediction procedure for the evaluation of
                                    Rec.   ITU-R   P.530-11   microwave interference between stations on
                                    Rec.   ITU-R   P.531-8    the surface of the Earth at frequencies
                                    Rec.   ITU-R   P.618-8    above about 0.7 GHz*
                                    Rec.   ITU-R   P.619-1
                                    Rec.   ITU-R   P.620-6
                                    Rec.   ITU-R   P.679-3
                                    Rec.   ITU-R   P.681-6
equatorial                          Rec.   ITU-R   P.617-1    PROPAGATION PREDICTION
                                                              TECHNIQUES AND DATA REQUIRED
                                                              FOR THE DESIGN OF TRANS-
                                                              HORIZON RADIO-RELAY SYSTEMS
equinoctial                         Rec. ITU-R P.531-8        Ionospheric propagation data and prediction
                                                              methods required for the design of
                                                              satellite services and systems
equinoctial months                  Rec. ITU-R P.534-4        Method of Calculating sporatic E Field
                                                              Strength
equipment up-time                   Rec.ITUR P. 311-12        Acquisition, presentation and analysis of
                                                              data in studies of tropospheric propagation

equivalent basic transmission       Rec. ITU-R P.1546-2          Method for point-to-area predictions for
loss                                                           terrestrial services in the frequency range
                                                                           30 MHz to 3 000 MHz
equivalent Earth radius          Rec.      ITU-R   P.526-10   Propagation by Diffraction
equivalent isotropically radiatedRec.      ITU-R   P.525-2    Calculation of Free Space Attenuation
power (e.i.r.p.)                 Rec.      ITU-R   P.532-1
                                 Rec.      ITU-R   P.533-8
                                 Rec.      ITU-R   P.1409-0
equivalent median sky-wave field Rec.      ITU-R   P.533-8    HF propagation prediction method
strength
equivalent slab thickness        Rec.      ITU-R P.531-8      Ionospheric propagation data and prediction
                                                              methods required for the design of
                                                              satellite services and systems
equivalent-incident field strength Rec. ITU-R P.845-3         HF field strength measurement

exceedance                        Rec. ITU-R P.452-12           Propagation data and prediction methods
                                  Rec. ITU-R P.530-11          required for the design of terrestrial line-of-
                                  Rec. ITU-R P.617-1                          sight systems
                                  Rec. ITU-R P.618-8
                                  Rec. ITU-R P.619-1
                                  Rec. ITU-R P.1623-1
excess polarization-coupling loss Rec.ITU-R P. 435-7          Sky-wave field-strenght prediction method
                                                              for Broadcasting Service in the Frequency
                                                              range 150 to 1600KHz.
Excess time delay(mseg)             Rec. ITU-R P.1407-2       Multipath propagation parametrization of its
                                                              characteristics
Expected values of atmosphere       Rec. ITU-R P.372-8        Radio Noise
radio noise
External noise factor(fa)         Rec. ITU-R P.372-8      Radio Noise
External Wedge(n)                 Rec. ITU-R P.526-10     Propagation by Diffraction
extraordinary waves               Rec. ITU-R P.532-1      Ionospheric Effects and Operational
                                                          Considerations Associated with the Artificial
                                                          Modification of the Ionosphere and the
                                                          Radio Wave Channel
F region / F-region               Rec.ITU-R P. 434-6 Rec. ITU-R Reference Ionospheric
                                  ITU-R P.532-1           Characteristics and Methods of Basic MUF
                                                          Operational MUF and Ray-path Prediction

F1 layer                          Rec.ITU-R P. 434-6        ITU-R Reference Ionospheric
                                                            Characteristics and Methods of Basic MUF
                                                            Operational MUF and Ray-path Prediction

F2 layer                          Rec.ITU-R P. 434-6 Rec. Method of Calculating sporatic E Field
                                  ITU-R P.533-8 Rec. ITU- Strength
                                  R P.534-4 Rec. ITU-R
                                  P.844-1
F2-layer numerical maps           Rec.ITU-R P. 434-6      ITU-R Reference Ionospheric
                                                          Characteristics and Methods of Basic MUF
                                                          Operational MUF and Ray-path Prediction

fade / fading                     Rec.   ITU-R   P.452-12   Prediction procedure for the evaluation of
                                  Rec.   ITU-R   P.530-11   microwave interference between stations on
                                  Rec.   ITU-R   P.532-1    the surface of the Earth at frequencies
                                  Rec.   ITU-R   P.533-8    above about 0.7 GHz*
                                  Rec.   ITU-R   P.617-1
                                  Rec.   ITU-R   P.679-3
                                  Rec.   ITU-R   P.680-3
                                  Rec.   ITU-R   P.681-6
                                  Rec.   ITU-R   P.844-1
                                  Rec.   ITU-R   P.845-3
                                  Rec.   ITU-R   P.1060-0
                                  Rec.   ITU-R   P.1623-1
fade / fading depth               Rec.   ITU-R   P.530-11   Prediction method of fade dynamics on
                                  Rec.   ITU-R   P.618-8    Earth-space paths
                                  Rec.   ITU-R   P.680-3
                                  Rec.   ITU-R   P.682-1
                                  Rec.   ITU-R   P.1623-1
fade / fading duration            Rec.   ITU-R   P.452-12   Prediction procedure for the evaluation of
                                  Rec.   ITU-R   P.530-11   microwave interference between stations on
                                  Rec.   ITU-R   P.618-8    the surface of the Earth at frequencies
                                  Rec.   ITU-R   P.680-3    above about 0.7 GHz*
                                  Rec.   ITU-R   P.681-6
                                  Rec.   ITU-R   P.682-1
                                  Rec.   ITU-R   P.845-3
                                  Rec.   ITU-R   P.1623-1
fade mitigation technique (FMT)   Rec.   ITU-R   P.452-12   Prediction method of fade dynamics on
                                  Rec.   ITU-R   P.1623-1   Earth-space paths
fade rates                        Rec.   ITU-R   P.618-8    Propagation data and prediction methods
                                                            required for the design of Earth-space
                                                            telecommunication systems
fade slope                       Rec.ITUR P. 311-12        Acquisition, presentation and analysis of
                                 Rec. ITU-R P.1623-1       data in studies of tropospheric propagation

Faraday rotation                 Rec. ITU-R P.531-8      Ionospheric propagation data and prediction
                                 Rec. ITU-R P.618-8      methods required for the design of
                                 Rec. ITU-R P.619-1      satellite services and systems
                                 Rec. ITU-R P.679-3
                                 Rec. ITU-R P.680-3
                                 Rec. ITU-R P.843-1
                                 Rec. ITU-R P.845-3
                                 Rec. ITU-R P.846-1
                                 Rec. ITU-R P.1409-0
far-field region                 Rec. ITU-R P.845-3      HF field strength measurement
field strength /field-strength   Rec.ITU-R P. 370-7      PROPAGATION PREDICTION
                                 Rec.ITU-R P. 435-7 Rec. TECHNIQUES AND DATA REQUIRED
                                 ITU-R P.534-4 Rec. ITU- FOR THE DESIGN OF TRANS-
                                 R P.617-1 Rec. ITU-R HORIZON RADIO-RELAY SYSTEMS
                                 P.679-3 Rec. ITU-R
                                 P.684-4 Rec. ITU-R
                                 P.845-3 Rec. ITU-R
                                 P.1546-2
figure of merit of performance   Rec. ITU-R P.842-3      Computation of reliability and compatibility of
                                                         HF radio systems
First order longitude            Rec.ITU-R P.1239-0      ITU-R Reference Ionospheric
                                                         characteristics
Fitted values dt                 Rec. ITU-R P.833-5      Attenuation in Vegetation
Fitted values of a               Rec. ITU-R P.833-5      Attenuation in Vegetation
Fitted values of albedo          Rec. ITU-R P.833-5      Attenuation in Vegetation
Fitted values of b               Rec. ITU-R P.833-5      Attenuation in Vegetation
fixed services                   Rec. ITU-R P.1060-0     Propagation factors affecting frequency
                                                         sharing in HF terrestrial systems
fixed-satellite service (FSS)    Rec. ITU-R P.619-1      Propagation Data required for the Evaluation
                                 Rec. ITU-R P.679-3      of Interference between Stations in Space
                                 Rec. ITU-R P.680-3      ant those on the Surface of the Earth
                                 Rec. ITU-R P.681-6
                                 Rec. ITU-R P.682-1
                                 Rec. ITU-R P.1409-0
flat fading                      Rec. ITU-R P.619-1      Propagation Data required for the Evaluation
                                                         of Interference between Stations in Space
                                                         ant those on the Surface of the Earth

focus the radio waves            Rec. ITU-R P.531-8        Ionospheric propagation data and prediction
                                                           methods required for the design of
                                                           satellite services and systems
Focusing and defocusing of wave Rec. ITU-R P.834-6         Effects of Tropospheric Refaction on the
propagation                                                Radiowave Propagation
focusing factor                 Rec. ITU-R P.684-4         Prediction of field strength at frequencies
                                                           below about 150 kHz
foE                              Rec. ITU-R P.684-4        Prediction of field strength at frequencies
                                                           below about 150 kHz
Fog attenuation                  Rec. ITU-R P.840-3        Attenuation due to Cloud and Fog
forward scattering               Rec. ITU-R P.531-8    Ionospheric propagation data and prediction
                                                       methods required for the design of
                                                       satellite services and systems
forward-error correction (FEC)   Rec. ITU-R P.530-11     Propagation data and prediction methods
                                                        required for the design of terrestrial line-of-
                                                                        sight systems
free space                       Rec. ITU-R P.684-4    Prediction of field strength at frequencies
                                                       below about 150 kHz
free-space attenuation / loss    Rec. ITU-R P.525-2    Calculation of Free Space Attenuation
                                 Rec. ITU-R P.620-6
Free-space basic transmission    Rec. ITU-R P.525-2    Calculation of Free Space Attenuation
loss for a radar system
free-space path loss             Rec. ITU-R P.1409-0   Propagation Data and Prediction Methods
                                                       Required for the Design of Systems Using
                                                       High Altitude Platform Stations At About 47
                                                       GHz
Frequency                        Rec. ITU-R P.372-8    Radio Noise
frequency band selection         Rec.ITU-R P. 434-6    ITU-R Reference Ionospheric
                                                       Characteristics and Methods of Basic MUF
                                                       Operational MUF and Ray-path Prediction

frequency diversity              Rec. ITU-R P.530-11     Propagation data and prediction methods
                                 Rec. ITU-R P.617-1     required for the design of terrestrial line-of-
                                                                        sight systems
frequency sharing                Rec. ITU-R P.531-8    Ionospheric propagation data and prediction
                                 Rec. ITU-R P.1060-0   methods required for the design of
                                                       satellite services and systems
frequency shift-keying           Rec. ITU-R P.845-3    HF field strength measurement
Fresnel clearance distance       Rec. ITU-R P.681-6    Propagation data required for the design of
                                 Rec. ITU-R P.1546-2   Earth-space land mobile telecommunication
                                                       systems
Fresnel ellipsoid                Rec. ITU-R P.530-11     Propagation data and prediction methods
                                 Rec. ITU-R P.526-10    required for the design of terrestrial line-of-
                                                                        sight systems
Fresnel Integrals                Rec. ITU-R P.526-10   Propagation by Diffraction
Fresnel reflection coefficient   Rec. ITU-R P.680-3    Propagation data required for the design of
                                 Rec. ITU-R P.682-1    earth-space maritime mobile
                                                       telecommunication systems
Fresnel zone                     Rec. ITU-R P.452-12   Prediction procedure for the evaluation of
                                 Rec. ITU-R P.526-10   microwave interference between stations on
                                 Rec. ITU-R P.530-11   the surface of the Earth at frequencies
                                 Rec. ITU-R P.681-6    above about 0.7 GHz*
                                 Rec. ITU-R P.843-1
                                 Rec. ITU-R P.1546-2
fully blocked condition          Rec. ITU-R P.681-6    Propagation data required for the design of
                                                       Earth-space land mobile telecommunication
                                                       systems
galactic background              Rec. ITU-R P.618-8    Propagation data and prediction methods
                                                       required for the design of Earth-space
                                                       telecommunication systems
galactic noise                 Rec.   ITU-R   P.372-8    HF propagation prediction method
                               Rec.   ITU-R   P.533-8
                               Rec.   ITU-R   P.842-3
gaseous absorbtion             Rec.   ITU-R   P.452-12   Prediction procedure for the evaluation of
                               Rec.   ITU-R   P.619-1    microwave interference between stations on
                               Rec.   ITU-R   P.620-6    the surface of the Earth at frequencies
                               Rec.   ITU-R   P.679-3    above about 0.7 GHz*
                               Rec.   ITU-R   P.680-3
                               Rec.   ITU-R   P.681-6
                               Rec.   ITU-R   P.1409-0
gaseous attenuation            Rec.   ITU-R   P.682-1    Propagation Data Required for the Design of
                                                         Earth-Space Aeronautical Mobile
                                                         Telecommunication Systems
geoclimatic factor K           Rec. ITU-R P.530-11         Propagation data and prediction methods
                               Rec. ITU-R P.618-8         required for the design of terrestrial line-of-
                                                                         sight systems
geoclimatic regions            Rec. ITU-R P.530-11         Propagation data and prediction methods
                                                          required for the design of terrestrial line-of-
                                                                         sight systems
Geodetic datum                 Rec. ITU-R P.1058-2       Digital topographic database for propagation
                                                         studies
Geographic coordinate functions Rec.ITU-R P. 434-6       ITU-R Reference Ionospheric
Gk (l, q)                                                Characteristics and Methods of Basic MUF
                                                         Operational MUF and Ray-path Prediction

geomagnetic                    Rec. ITU-R P.534-4        Method of Calculating sporatic E Field
                               Rec. ITU-R P.846-1        Strength
geomagnetic disturbances       Rec. ITU-R P.844-1        Ionospheric factors affecting frequency
                                                         sharing in the VHF and UHF bands (30 MHz-
                                                         3 GHz)
geomagnetic equator            Rec.   ITU-R   P.682-1    Propagation Data Required for the Design of
                               Rec.   ITU-R   P.679-3    Earth-Space Aeronautical Mobile
                               Rec.   ITU-R   P.680-3    Telecommunication Systems
geomagnetic field              Rec.   ITU-R   P.684-4    Prediction of field strength at frequencies
                                                         below about 150 kHz
geomagnetic field line         Rec. ITU-R P.532-1        Ionospheric Effects and Operational
                                                         Considerations Associated with the Artificial
                                                         Modification of the Ionosphere and the
                                                         Radio Wave Channel
geomagnetic latitudes          Rec.ITU-R P. 434-6        ITU-R Reference Ionospheric
                                                         Characteristics and Methods of Basic MUF
                                                         Operational MUF and Ray-path Prediction

geomagnetic pole               Rec.ITU-R P. 434-6        ITU-R Reference Ionospheric
                                                         Characteristics and Methods of Basic MUF
                                                         Operational MUF and Ray-path Prediction

Geometric consideration        Rec. ITU-R P.531-8        Ionospheric propagation data and prediction
                                                         methods required for the design of
                                                         satellite services and systems
Geometry of multipoint obstacles Rec. ITU-R P.526-10     Propagation by Diffraction
geostationary (GSO)                Rec. ITU-R P.618-8        Propagation data required for the design of
                                   Rec. ITU-R P.681-6        Earth-space land mobile telecommunication
                                                             systems
geostationary orbit                Rec. ITU-R P.532-1        Ionospheric Effects and Operational
                                                             Considerations Associated with the Artificial
                                                             Modification of the Ionosphere and the
                                                             Radio Wave Channel
geostationary satellite            Rec. ITU-R P.620-6        Propagation data required for the evaluation
                                   Rec. ITU-R P.372-8        of coordination distances in the frequency
                                                             range 100 MHz to 105 GHz
Gold code                          Rec. ITU-R P.845-3        HF field strength measurement
grazing angles                     Rec. ITU-R P.530-11         Propagation data and prediction methods
                                                              required for the design of terrestrial line-of-
                                                                              sight systems
grazing incidence                  Rec. ITU-R P.681-6        Propagation data required for the design of
                                   Rec. ITU-R P.843-1        Earth-space land mobile telecommunication
                                                             systems
grazing-incidence reflections      Rec.ITU-R P.1406-0        Propagation effects relating to terrestrial
                                                             land mobile service in the VHF and UHF
                                                             bands
great-circle path                  Rec.   ITU-R   P.533-8    Propagation data required for the evaluation
                                   Rec.   ITU-R   P.617-1    of coordination distances in the frequency
                                   Rec.   ITU-R   P.620-6    range 100 MHz to 105 GHz
                                   Rec.   ITU-R   P.684-4
                                   Rec.   ITU-R   P.845-3
Gridpoints                         Rec.   ITU-R   P.1510-0   Annual mean surface temperature
Ground and obstacles               Rec.   ITU-R   P.372-8    Radio Noise
obstructions
ground cover                       Rec. ITU-R P.1546-2          Method for point-to-area predictions for
                                                               terrestrial services in the frequency range
                                                                           30 MHz to 3 000 MHz
ground diffraction component       Rec. ITU-R P.833-5        Attenuation in Vegetation
Ground distance D up to dmax       Rec.ITU-R P. 434-6        ITU-R Reference Ionospheric
                                                             Characteristics and Methods of Basic MUF
                                                             Operational MUF and Ray-path Prediction

ground wave                        Rec. ITU-R P.532-1        Prediction of field strength at frequencies
                                   Rec. ITU-R P.684-4        below about 150 kHz
Ground-wave propagation            Rec. ITU-R P.527-3        Electrical characteristics of the surface of
                                                             the Earth
group delay                        Rec. ITU-R P.531-8        Ionospheric propagation data and prediction
                                   Rec. ITU-R P.846-1        methods required for the design of
                                                             satellite services and systems
group velocity distortion          Rec. ITU-R P.531-8        Ionospheric propagation data and prediction
                                                             methods required for the design of
                                                             satellite services and systems
Guide of propagation diffraction   Rec. ITU-R P.526-10       Propagation by Diffraction
guided                             Rec.ITU-R P.1406-0        Propagation effects relating to terrestrial
                                                             land mobile service in the VHF and UHF
                                                             bands
gyrofrequency                   Rec.ITU-R P. 434-6 Rec. HF propagation prediction method
                                ITU-R P.533-8 Rec.ITU-
                                R P.1239-0
gyromagnetic frequency          Rec. ITU-R P.532-1      Ionospheric Effects and Operational
                                                        Considerations Associated with the Artificial
                                                        Modification of the Ionosphere and the
                                                        Radio Wave Channel
height gains                    Rec. ITU-R P.684-4      Prediction of field strength at frequencies
                                                        below about 150 kHz
Height of base antenna above    Rec. ITU-R P.1546-2        Method for point-to-area predictions for
terrain height                                            terrestrial services in the frequency range
                                                                      30 MHz to 3 000 MHz
Height of the Earth's surface   Rec. ITU-R P.453-9      The Radio refractive index its formulae and
above the sea level                                     refractive data
HF                              Rec. ITU-R P.532-1      Ionospheric Effects and Operational
                                Rec. ITU-R P.533-8      Considerations Associated with the Artificial
                                Rec. ITU-R P.534-4      Modification of the Ionosphere and the
                                Rec. ITU-R P.684-4      Radio Wave Channel
                                Rec. ITU-R P.843-1
                                Rec. ITU-R P.845-3
                                Rec. ITU-R P.1060-0
HF radio-circuit design         Rec.ITU-R P. 434-6      ITU-R Reference Ionospheric
                                                        Characteristics and Methods of Basic MUF
                                                        Operational MUF and Ray-path Prediction

high Earth orbit (HEO)          Rec. ITU-R P.681-6        Propagation data required for the design of
                                                          Earth-space land mobile telecommunication
                                                          systems
High latitude reference         Rec. ITU-R P.835-4        Reference Standard Atmosphere
atmosphere
hop                             Rec. ITU-R P.533-8        HF propagation prediction method
                                Rec. ITU-R P.534-4
                                Rec. ITU-R P.684-4
                                Rec. ITU-R P.1060-0
hop-length                      Rec.ITU-R P.1240-0        ITU-R methods of basic MUF, operational
                                                          MUF
Horizontal polarization         Rec. ITU-R P.372-8        Radio Noise

horizontally inhomogeneous      Rec. ITU-R P.684-4        Prediction of field strength at frequencies
waveguide channel                                         below about 150 kHz
hourly loss factor              Rec.ITU-R P. 435-7        Sky-wave field-strenght prediction method
                                                          for Broadcasting Service in the Frequency
                                                          range 150 to 1600KHz.
hydrometeor                     Rec.   ITU-R   P.452-12   Prediction procedure for the evaluation of
                                Rec.   ITU-R   P.530-11   microwave interference between stations on
                                Rec.   ITU-R   P.531-8    the surface of the Earth at frequencies
                                Rec.   ITU-R   P.618-8    above about 0.7 GHz*
                                Rec.   ITU-R   P.619-1
                                Rec.   ITU-R   P.620-6
                                Rec.   ITU-R   P.679-3
intermediate circular orbit (ICO)   Rec. ITU-R P.681-6        Propagation data required for the design of
                                                              Earth-space land mobile telecommunication
                                                              systems
Impulsive noise amplitude           Rec. ITU-R P.372-8        Radio Noise
distribution
Impulsive noise spectrum            Rec. ITU-R P.372-8        Radio Noise
amplitude
Incidence angle                     Rec.   ITU-R   P.372-8    Radio Noise
                                    Rec.   ITU-R   P.526-10
                                    Rec.   ITU-R   P.684-4
Inclined path                       Rec.   ITU-R   P.676-7    Attenuation by atmospheric gases
incoherent component                Rec.   ITU-R   P.680-3    Propagation data required for the design of
                                    Rec.   ITU-R   P.682-1    earth-space maritime mobile
                                                              telecommunication systems
incoherent transmission systems Rec. ITU-R P.618-8            Propagation data and prediction methods
                                                              required for the design of Earth-space
                                                              telecommunication systems
information duty cycle              Rec. ITU-R P.843-1        Communication by Meteor-burst
                                                              Propagation
initial trail radius                Rec. ITU-R P.843-1        Communication by Meteor-burst
                                                              Propagation
intensity of radio noise            Rec.ITU-R P.1321-0        Propagation factor affecting systems using
                                                              digital modulation techniques at LF and MF

inter-symbol interference           Rec.ITU-R P.1406-0          Propagation data and prediction methods
                                    Rec. ITU-R P.530-11        required for the design of terrestrial line-of-
                                                                              sight systems
interdecile height variation        Rec.ITU-R P.1406-0        Propagation effects relating to terrestrial
                                                              land mobile service in the VHF and UHF
                                                              bands
interfade duration                  Rec. ITU-R P.1623-1       Prediction method of fade dynamics on
                                                              Earth-space paths
interference                        Rec. ITU-R P.452-12       Prediction procedure for the evaluation of
                                    Rec. ITU-R P.531-8        microwave interference between stations on
                                    Rec. ITU-R P.532-1        the surface of the Earth at frequencies
                                    Rec. ITU-R P.534-4        above about 0.7 GHz*
                                    Rec. ITU-R P.619-1
                                    Rec. ITU-R P.620-6
                                    Rec. ITU-R P.679-3
                                    Rec. ITU-R P.680-3
                                    Rec. ITU-R P.842-3
                                    Rec. ITU-R P.843-1
                                    Rec. ITU-R P.844-1
                                    Rec. ITU-R P.845-3
                                    Rec. ITU-R P.1060-0
                                    Rec. ITU-R P.1409-0
                                    Rec. ITU-R P.1546-2
interfering noise                   Rec. ITU-R P.845-3        HF field strength measurement
interfering signals                 Rec. ITU-R P.842-3        Computation of reliability and compatibility of
                                                              HF radio systems
Intermodulation                     Rec. ITU-R P.845-3        HF field strength measurement
International Frequency List        Rec. ITU-R P.845-3        HF field strength measurement
ion-acoustic wave                 Rec. ITU-R P.532-1        Ionospheric Effects and Operational
                                                            Considerations Associated with the Artificial
                                                            Modification of the Ionosphere and the
                                                            Radio Wave Channel
ionosphere                        Rec. ITU-R P.313-10       Exchange of information for short-term
                                  Rec. ITU-R P.371-8        forecasts and transmission of ionospheric
                                  Rec. ITU-R P.373-8        disturbance warnings
                                  Rec. ITU-R P.531-8
                                  Rec. ITU-R P.532-1
                                  Rec. ITU-R P.533-8
                                  Rec. ITU-R P.534-4
                                  Rec. ITU-R P.618-8
                                  Rec. ITU-R P.619-1
                                  Rec. ITU-R P.679-3
                                  Rec. ITU-R P.680-3
                                  Rec. ITU-R P.681-6
                                  Rec. ITU-R P.682-1
                                  Rec. ITU-R P.684-4
                                  Rec. ITU-R P.843-1
                                  Rec. ITU-R P.844-1
                                  Rec. ITU-R P.845-3
                                  Rec. ITU-R P.846-1
                                  Rec. ITU-R P.1060-0
                                  Rec. ITU-R P.1546-2
ionospheric disturbances          Rec. ITU-R P.313-10       Exchange of information for short-term
                                                            forecasts and transmission of ionospheric
                                                            disturbance warnings
ionospheric plasma                Rec. ITU-R P.532-1        Ionospheric Effects and Operational
                                                            Considerations Associated with the Artificial
                                                            Modification of the Ionosphere and the
                                                            Radio Wave Channel
irregular terrain                 Rec. ITU-R P.526-10         Propagation data and prediction methods
                                  Rec. ITU-R P.530-11        required for the design of terrestrial line-of-
                                                                             sight systems
Isolated obstacles                Rec. ITU-R P.526-10       Propagation by Diffraction
Isoplanatic angle of the          Rec. ITU-R P.1621-1       Propagation data required for the design for
atmosphere                                                  Earth-space systems operating
isotropic                         Rec.   ITU-R   P.532-1    Ionospheric Effects and Operational
                                  Rec.   ITU-R   P.534-4    Considerations Associated with the Artificial
                                  Rec.   ITU-R   P.843-1    Modification of the Ionosphere and the
                                  Rec.   ITU-R   P.845-3    Radio Wave Channel
                                  Rec.   ITU-R   P.1409-0
Isotropic antennas                Rec.   ITU-R   P.525-2    Calculation of Free Space Attenuation
isotropic pattern                 Rec.   ITU-R   P.681-6    Propagation data required for the design of
                                                            Earth-space land mobile telecommunication
                                                            systems
Isotropically received power.     Rec. ITU-R P.525-2        Calculation of Free Space Attenuation
isotropically transmited power.   Rec. ITU-R P.525-2        Calculation of Free Space Attenuation
k-factor                          Rec. ITU-R P.530-11         Propagation data and prediction methods
                                                             required for the design of terrestrial line-of-
                                                                            sight systems
knife-edge                          Rec. ITU-R P.452-12       Prediction procedure for the evaluation of
                                                              microwave interference between stations on
                                                              the surface of the Earth at frequencies
                                                              above about 0.7 GHz*
knife-edge obstruction              Rec. ITU-R P.530-11         Propagation data and prediction methods
                                                               required for the design of terrestrial line-of-
                                                                                sight systems
land mobile-satellite service       Rec. ITU-R P.681-6        Propagation data required for the design of
(LMSS)                                                        Earth-space land mobile telecommunication
                                                              systems
land path                           Rec. ITU-R P.1546-2          Method for point-to-area predictions for
                                                                terrestrial services in the frequency range
                                                                            30 MHz to 3 000 MHz
land-use classes                    Rec.ITU-R P.1411-3        Propagation data and prediction methods for
                                                              the planning of short-range outdoor
                                                              radiocommunication systems and radio local
                                                              area networks in the frequency range 300
                                                              MHz to 100 GHz
L-band                              Rec. ITU-R P.681-6        Propagation data required for the design of
                                                              Earth-space land mobile telecommunication
                                                              systems
Leaky feeders                       Rec.ITU-R P.1406-0        Propagation effects relating to terrestrial
                                                              land mobile service in the VHF and UHF
                                                              bands
LF                                  Rec. ITU-R P.532-1        Ionospheric Effects and Operational
                                    Rec. ITU-R P.684-4        Considerations Associated with the Artificial
                                                              Modification of the Ionosphere and the
                                                              Radio Wave Channel
lightning                           Rec.ITU-R P.1321-0        Propagation factor affecting systems using
                                                              digital modulation techniques at LF and MF

Limiting values                     Rec. ITU-R P.832-2        World Atlas of Conductivity
linear amplitude distortion (LAD)   Rec. ITU-R P.530-11         Propagation data and prediction methods
                                                               required for the design of terrestrial line-of-
                                                                              sight systems
linearly polarized                  Rec. ITU-R P.679-3        Propagation data required for the design of
                                    Rec. ITU-R P.680-3        broadcasting-satellite systems


line-by-line                        Rec.   ITU-R   P.676-7    Attenuation by atmospheric gases
line-of-sight                       Rec.   ITU-R   P.452-12   Prediction procedure for the evaluation of
                                    Rec.   ITU-R   P.526-10   microwave interference between stations on
                                    Rec.   ITU-R   P.530-11   the surface of the Earth at frequencies
                                    Rec.   ITU-R   P.619-1    above about 0.7 GHz*
                                    Rec.   ITU-R   P.620-6
                                    Rec.   ITU-R   P.679-3
                                    Rec.   ITU-R   P.681-6
link                                Rec.   ITU-R   P.452-12   Prediction procedure for the evaluation of
                                                              microwave interference between stations on
                                                              the surface of the Earth at frequencies
                                                              above about 0.7 GHz*
link availability                   Rec. ITU-R P.681-6    Propagation data required for the design of
                                                          Earth-space land mobile telecommunication
                                                          systems
link budget                         Rec. ITU-R P.531-8    Ionospheric propagation data and prediction
                                                          methods required for the design of
                                                          satellite services and systems
location variability                Rec. ITU-R P.1546-2      Method for point-to-area predictions for
                                                            terrestrial services in the frequency range
                                                                        30 MHz to 3 000 MHz
logarithmic-linear graph            Rec.ITUR P. 311-12    Acquisition, presentation and analysis of
                                                          data in studies of tropospheric propagation

log-irradiance                      Rec. ITU-R P.1622-0   Prediction methods required for the design
                                                          of Earth-space systems operating between
                                                          20 THz and 375 THz
log-normal distributions            Rec.ITU-R P.1321-0    Propagation factor affecting systems using
                                                          digital modulation techniques at LF and MF

log-normal shadow fading            Rec.ITU-R P.1791-0    Propagation prediction methods for
                                                          assessment of the impact of ultra- wideband
                                                          devices
log-normally distributed            Rec.ITU-R P.1321-0    Propagation factor affecting systems using
                                                          digital modulation techniques at LF and MF

log-normally distributed sky wave Rec.ITU-R P.1321-0      Propagation factor affecting systems using
signal                                                    digital modulation techniques at LF and MF

log-periodic antennas               Rec. ITU-R P.845-3    HF field strength measurement
long-distance ionospheric           Rec.ITU-R P. 435-7    Sky-wave field-strenght prediction method
propagation                                               for Broadcasting Service in the Frequency
                                                          range 150 to 1600KHz.
long-term                           Rec.ITUR P. 311-12    Acquisition, presentation and analysis of
                                                          data in studies of tropospheric propagation

Long-term average predicted         Rec. ITU-R P.687-1    Characterization of natural variability of
value                                                     propagation phenomena
long-term criterion                 Rec.ITU-R P.1448-0    Determination of the coordination of the area
                                                          around an Earth station the frequency bands
                                                          between 100 MHZ and 105 GHz

long-term reference ionospheric     Rec.ITU-R P.1240-0    ITU-R methods of basic MUF, operational
data                                                      MUF
Loss characteristics of materials   Rec.ITUR P. 311-12    Acquisition, presentation and analysis of
                                                          data in studies of tropospheric propagation

Loss factor                         Rec.ITU-R P. 435-7    Sky-wave field-strenght prediction method
                                                          for Broadcasting Service in the Frequency
                                                          range 150 to 1600KHz.
loss factor incorporating effects   Rec.ITU-R P. 435-7    Sky-wave field-strenght prediction method
of ionospheric absorption                                 for Broadcasting Service in the Frequency
                                                          range 150 to 1600KHz.
Low- latitude annual reference   Rec. ITU-R P.835-4    Reference Standard Atmosphere
atmosphere
low-Earth orbit (LEO)            Rec. ITU-R P.679-3    Propagation data required for the design of
                                                       broadcasting-satellite systems
lower decile                     Rec. ITU-R P.842-3    Computation of reliability and compatibility of
                                                       HF radio systems
Lowest excess attenuation of the Rec. ITU-R P.833-5    Attenuation in Vegetation
others paths
lowest usable frequency (LUF)    Rec. ITU-R P.313-10   Definitions of Maximum and Minimum
                                 Rec. ITU-R P.373-8    Transmission Frequencies
                                 Rec. ITU-R P.533-8
                                 Rec. ITU-R P.1060-0
low-resolution land-use data     Rec.ITU-R P.1411-3    Propagation data and prediction methods for
                                                       the planning of short-range outdoor
                                                       radiocommunication systems and radio local
                                                       area networks in the frequency range 300
                                                       MHz to 100 GHz
M factor                         Rec.ITU-R P. 434-6    ITU-R Reference Ionospheric
                                                       Characteristics and Methods of Basic MUF
                                                       Operational MUF and Ray-path Prediction

magnetic dip                     Rec.ITU-R P.1239-0    ITU-R Reference Ionospheric
                                                       characteristics
magnetic field strength          Rec. ITU-R P.531-8    Ionospheric propagation data and prediction
                                                       methods required for the design of
                                                       satellite services and systems
magnetic induction Fx, Fy and Fz Rec.ITU-R P. 434-6    ITU-R Reference Ionospheric
in gauss                                               Characteristics and Methods of Basic MUF
                                                       Operational MUF and Ray-path Prediction

magnetoionic component           Rec. ITU-R P.373-8    Definitions of Maximum and Minimum
                                                       Transmission Frequencies
Main latitude variation          Rec.ITU-R P.1239-0    ITU-R Reference Ionospheric
                                                       characteristics
man-made noise                   Rec. ITU-R P.842-3    Computation of reliability and compatibility of
                                                       HF radio systems
man-made noise power             Rec. ITU-R P.372-8    Radio Noise
man-made sources                 Rec.ITU-R P.1321-0    Propagation factor affecting systems using
                                                       digital modulation techniques at LF and MF

mapping functions                Rec.ITU-R P. 434-6    ITU-R Reference Ionospheric
                                                       Characteristics and Methods of Basic MUF
                                                       Operational MUF and Ray-path Prediction

maritime mobile systems          Rec. ITU-R P.680-3    Propagation data required for the design of
                                                       earth-space maritime mobile
                                                       telecommunication systems
Maritime sub-tropical            Rec. ITU-R P.617-1    PROPAGATION PREDICTION
                                                       TECHNIQUES AND DATA REQUIRED
                                                       FOR THE DESIGN OF TRANS-
                                                       HORIZON RADIO-RELAY SYSTEMS
Maritime temperate, overland   Rec. ITU-R P.617-1        PROPAGATION PREDICTION
                                                         TECHNIQUES AND DATA REQUIRED
                                                         FOR THE DESIGN OF TRANS-
                                                         HORIZON RADIO-RELAY SYSTEMS
Maritime temperate, oversea    Rec. ITU-R P.617-1        PROPAGATION PREDICTION
                                                         TECHNIQUES AND DATA REQUIRED
                                                         FOR THE DESIGN OF TRANS-
                                                         HORIZON RADIO-RELAY SYSTEMS
masking angle (MKA)            Rec. ITU-R P.681-6        Propagation data required for the design of
                                                         Earth-space land mobile telecommunication
                                                         systems
masking functions (MKF)        Rec. ITU-R P.681-6        Propagation data required for the design of
                                                         Earth-space land mobile telecommunication
                                                         systems
maximum and minimum solar      Rec.ITU-R P. 434-6        ITU-R Reference Ionospheric
activity of h¢F,F2                                       Characteristics and Methods of Basic MUF
                                                         Operational MUF and Ray-path Prediction

maximum error ratio            Rec. ITU-R P.373-8        Definitions of Maximum and Minimum
                                                         Transmission Frequencies
maximum solar zenith angle     Rec.ITU-R P.1239-0        ITU-R Reference Ionospheric
                                                         characteristics
maximum total attenuation due to Rec. ITU-R P.833-5      Attenuation in Vegetation
vegetaton in the radio path(dB)

maximum trapping angle         Rec. ITU-R P.834-6        Effects of Tropospheric Refaction on the
                                                         Radiowave Propagation
maximum usable frequency       Rec.   ITU-R   P.313-10   HF propagation prediction method
(MUF)                          Rec.   ITU-R   P.532-1
                               Rec.   ITU-R   P.533-8
                               Rec.   ITU-R   P.842-3
                               Rec.   ITU-R   P.844-1
                               Rec.   ITU-R   P.845-3
                               Rec.   ITU-R   P.1060-0
maxium value of man-made       Rec.   ITU-R   P.372-8    Radio Noise
noise power
mean annual global reference   Rec. ITU-R P.835-4        Reference Standard Atmosphere
atmosphere
mean difference                Rec.ITU-R P.1148-1        Standardizing procedure for cmparing
                                                         predicted and oberved HF sky-wave
                                                         observed HF signal intensities and the
                                                         presentation of such comparisons
median surface refractivity    Rec. ITU-R P.1546-2          Method for point-to-area predictions for
                                                           terrestrial services in the frequency range
                                                                       30 MHz to 3 000 MHz
Mediterranean                  Rec. ITU-R P.617-1        PROPAGATION PREDICTION
                                                         TECHNIQUES AND DATA REQUIRED
                                                         FOR THE DESIGN OF TRANS-
                                                         HORIZON RADIO-RELAY SYSTEMS
medium Earth orbit (MEO)       Rec. ITU-R P.681-6        Propagation data required for the design of
                                                         Earth-space land mobile telecommunication
                                                         systems
melting layer                     Rec. ITU-R P.620-6       Propagation data required for the evaluation
                                                           of coordination distances in the frequency
                                                           range 100 MHz to 105 GHz
mesh network                      Rec. ITU-R P.530-11        Propagation data and prediction methods
                                                            required for the design of terrestrial line-of-
                                                                            sight systems
mesh points                       Rec. ITU-R P.684-4       Prediction of field strength at frequencies
                                                           below about 150 kHz
meteor heights                    Rec. ITU-R P.843-1       Communication by Meteor-burst
                                                           Propagation
meteor trails /meteor-trails      Rec.   ITU-R   P.843-1   Communication by Meteor-burst
                                  Rec.   ITU-R   P.844-1   Propagation
Meteorological condition          Rec.   ITU-R   P.676-7   Attenuation by atmospheric gases
MF                                Rec.   ITU-R   P.532-1   Ionospheric Effects and Operational
                                                           Considerations Associated with the Artificial
                                                           Modification of the Ionosphere and the
                                                           Radio Wave Channel
MF conductivities maps            Rec. ITU-R P.832-2       World Atlas of Conductivity
micro-cell                        Rec.ITU-R P.1411-3       Propagation data and prediction methods for
                                                           the planning of short-range outdoor
                                                           radiocommunication systems and radio local
                                                           area networks in the frequency range 300
                                                           MHz to 100 GHz
Microwave brightness              Rec. ITU-R P.372-8       Radio Noise
temperature
Mid- latitude annual reference    Rec. ITU-R P.835-4       Reference Standard Atmosphere
atmosphere
mid-dip latitudes                 Rec. ITU-R P.534-4       Method of Calculating sporatic E Field
                                                           Strength
mid-path                          Rec.ITU-R P.1240-0       ITU-R methods of basic MUF, operational
                                                           MUF
Mie scattering                    Rec. ITU-R P.1621-1      Propagation data required for the design for
                                  Rec. ITU-R P.1622-0      Earth-space systems operating
Millimetre-wave                   Rec.ITU-R P.1411-3       Propagation data and prediction methods for
                                                           the planning of short-range outdoor
                                                           radiocommunication systems and radio local
                                                           area networks in the frequency range 300
                                                           MHz to 100 GHz
Millimetricwave radio solutions   Rec.ITU-R P.1410-3       Propagation data and prediction methods
                                                           required for the design of terrestrial
                                                           broadband millimetric radio access systems
                                                           operating in frequency range of about 20-50
                                                           GHz
minimum geographical distance     Rec.ITU-R P. 370-7       VHF and UHF Propagation Curves for the
                                                           Frequency range from 30 MHz to 1000 MHz

minimum geographical distance     Rec. ITU-R P.1546-2         Method for point-to-area predictions for
of separation                                               terrestrial services in the frequency range
                                                                        30 MHz to 3 000 MHz
Minimum trapping frequency        Rec. ITU-R P.834-6       Effects of Tropospheric Refaction on the
                                                           Radiowave Propagation
mirror-reflection heights         Rec. ITU-R P.533-8       HF propagation prediction method
mis-match                         Rec. ITU-R P.845-3    HF field strength measurement
mismatch loss                     Rec. ITU-R P.534-4    Method of Calculating sporatic E Field
                                                        Strength
mixed path interpolation factor   Rec. ITU-R P.1546-2      Method for point-to-area predictions for
                                                          terrestrial services in the frequency range
                                                                      30 MHz to 3 000 MHz
mixed-path                        Rec. ITU-R P.1546-2      Method for point-to-area predictions for
                                                          terrestrial services in the frequency range
                                                                      30 MHz to 3 000 MHz
Mobile service                    Rec. ITU-R P.525-2    Calculation of Free Space Attenuation
mobile-satellite service (MSS)    Rec. ITU-R P.531-8    Ionospheric propagation data and prediction
                                                        methods required for the design of
                                                        satellite services and systems
modal excitation factor           Rec. ITU-R P.684-4    Prediction of field strength at frequencies
                                                        below about 150 kHz
modal height gain functions       Rec. ITU-R P.684-4    Prediction of field strength at frequencies
                                                        below about 150 kHz
mode                              Rec. ITU-R P.533-8    HF propagation prediction method
                                  Rec. ITU-R P.684-4
mode availability                 Rec. ITU-R P.842-3    Computation of reliability and compatibility of
                                                        HF radio systems
mode conversion /mode-       Rec. ITU-R P.684-4         Prediction of field strength at frequencies
conversion                   Rec.ITU-R P.1406-0         below about 150 kHz
mode performance achievement Rec. ITU-R P.842-3         Computation of reliability and compatibility of
                                                        HF radio systems
mode reliability                  Rec. ITU-R P.842-3    Computation of reliability and compatibility of
                                                        HF radio systems
modes of propagation              Rec. ITU-R P.844-1    Ionospheric factors affecting frequency
                                                        sharing in the VHF and UHF bands (30 MHz-
                                                        3 GHz)
modified refractive index         Rec. ITU-R P.834-6    Effects of Tropospheric Refaction on the
                                                        Radiowave Propagation
modulation                        Rec. ITU-R P.845-3    HF field strength measurement
moisture content                  Rec. ITU-R P.527-3    Electrical characteristics of the surface of
                                                        the Earth
molar gas constant                Rec. ITU-R P.834-6    Effects of Tropospheric Refaction on the
                                                        Radiowave Propagation
monopole antenna                  Rec. ITU-R P.372-8    Radio Noise
monthly mean value(No)            Rec. ITU-R P.453-9    The Radio refractive index its formulae and
                                                        refractive data
monthly median h'F                Rec.ITU-R P. 434-6    ITU-R Reference Ionospheric
                                                        Characteristics and Methods of Basic MUF
                                                        Operational MUF and Ray-path Prediction

morphology                        Rec. ITU-R P.844-1    Ionospheric factors affecting frequency
                                                        sharing in the VHF and UHF bands (30 MHz-
                                                        3 GHz)
mountainous terrain               Rec. ITU-R P.681-6    Propagation data required for the design of
                                                        Earth-space land mobile telecommunication
                                                        systems
MUF factor M(3000)F2              Rec. ITU-R P.371-8    Choice of Indices for Long-Term Ionospheric
                                                        Predictions
multi-hop paths                       Rec.ITU-R P. 435-7    Sky-wave field-strenght prediction method
                                                            for Broadcasting Service in the Frequency
                                                            range 150 to 1600KHz.
multimode propagation                 Rec. ITU-R P.684-4    Prediction of field strength at frequencies
                                                            below about 150 kHz
multipath                             Rec. ITU-R P.452-12   Prediction procedure for the evaluation of
                                      Rec. ITU-R P.530-11   microwave interference between stations on
                                      Rec. ITU-R P.531-8    the surface of the Earth at frequencies
                                      Rec. ITU-R P.618-8    above about 0.7 GHz*
                                      Rec. ITU-R P.619-1
                                      Rec. ITU-R P.679-3
                                      Rec. ITU-R P.680-3
                                      Rec. ITU-R P.681-6
                                      Rec. ITU-R P.682-1
                                      Rec. ITU-R P.841-4
                                      Rec. ITU-R P.843-1
                                      Rec. ITU-R P.1546-2
multipath fading                      Rec. ITU-R P.1546-2      Method for point-to-area predictions for
                                                              terrestrial services in the frequency range
                                                                          30 MHz to 3 000 MHz
multiple high data-rate streams       Rec.ITU-R P.1791-0    Propagation prediction methods for
                                                            assessment of the impact of ultra- wideband
                                                            devices
Multiple isolated obstacles           Rec. ITU-R P.526-10   Propagation by Diffraction
multipoint communications             Rec.ITU-R P.1410-3    Propagation data and prediction methods
system                                                      required for the design of terrestrial
                                                            broadband millimetric radio access systems
                                                            operating in frequency range of about 20-50
                                                            GHz
NAD(noise angle distribution)         Rec. ITU-R P.372-8    Radio Noise
Nadir Angle                           Rec. ITU-R P.372-8    Radio Noise
Nadir brightness temperature          Rec. ITU-R P.372-8    Radio Noise
narrow-band                           Rec. ITU-R P.845-3    HF field strength measurement
Narrow-band statistics of             Rec.ITUR P. 311-12    Acquisition, presentation and analysis of
aeronautical mobile-satellite links                         data in studies of tropospheric propagation

Narrow-band statistics of             Rec.ITUR P. 311-12    Acquisition, presentation and analysis of
broadcasting-satellite fades and                            data in studies of tropospheric propagation
fade durations
Narrow-band statistics of land        Rec.ITUR P. 311-12    Acquisition, presentation and analysis of
mobile-satellite links                                      data in studies of tropospheric propagation

Narrow-band statistics of             Rec.ITUR P. 311-12    Acquisition, presentation and analysis of
maritime mobile-satellite links                             data in studies of tropospheric propagation

narrow-beam                           Rec.ITU-R P.1412-0    Propagation data for the evaluation of
                                                            coordination between Earth station in
                                                            working in the bidirectionally allocated
                                                            frequency bands
narrow-beam transmitter            Rec.ITU-R P.1412-0       Propagation data for the evaluation of
                                                            coordination between Earth station in
                                                            working in the bidirectionally allocated
                                                            frequency bands
Natural variability phenomena      Rec. ITU-R P.687-1       Characterization of natural variability of
                                                            propagation phenomena
near Earth                         Rec. ITU-R P.1622-0      Prediction methods required for the design
                                                            of Earth-space systems operating between
                                                            20 THz and 375 THz
near-field                         Rec. ITU-R P.681-6       Propagation data required for the design of
                                                            Earth-space land mobile telecommunication
                                                            systems
negative height gain               Rec.ITU-R P.1406-0       Propagation effects relating to terrestrial
                                                            land mobile service in the VHF and UHF
                                                            bands
neighborhood                       Rec. ITU-R P.684-4       Prediction of field strength at frequencies
                                                            below about 150 kHz
night-time interference            Rec.ITU-R P.1321-0       Propagation factor affecting systems using
                                                            digital modulation techniques at LF and MF

noise                              Rec. ITU-R P.452-12      Prediction procedure for the evaluation of
                                   Rec. ITU-R P.533-8       microwave interference between stations on
                                   Rec. ITU-R P.843-1       the surface of the Earth at frequencies
                                                            above about 0.7 GHz*
noise factor of the receiver (b)   Rec. ITU-R P.372-8       Radio Noise

noise Figure                       Rec.   ITU-R   P.372-8   Radio Noise
                                   Rec.   ITU-R   P.845-3
noise from lightning               Rec.   ITU-R   P.372-8   Radio Noise
noise intensity                    Rec.   ITU-R   P.372-8   Radio Noise
noise Levels                       Rec.   ITU-R   P.372-8   Radio Noise

noise parameters                   Rec. ITU-R P.372-8       Radio Noise
noise power bandwidth              Rec. ITU-R P.372-8       Radio Noise
nominal frequency                  Rec. ITU-R P.1546-2         Method for point-to-area predictions for
                                                             terrestrial services in the frequency range
                                                                         30 MHz to 3 000 MHz
nomographs                         Rec.ITUR P. 311-12       Acquisition, presentation and analysis of
                                                            data in studies of tropospheric propagation

non-compliant data                 Rec.ITUR P. 311-12       Acquisition, presentation and analysis of
                                                            data in studies of tropospheric propagation

non-directional antenna            Rec.ITU-R P.1448-0       Determination of the coordination of the area
                                                            around an Earth station the frequency bands
                                                            between 100 MHZ and 105 GHz

non-fade duration event            Rec. ITU-R P.681-6       Propagation data required for the design of
                                                            Earth-space land mobile telecommunication
                                                            systems
non-geostationary (non-GSO)        Rec. ITU-R P.681-6        Propagation data required for the design of
                                                             Earth-space land mobile telecommunication
                                                             systems
non-geostationary satellite        Rec. ITU-R P.618-8        Propagation data and prediction methods
                                   Rec. ITU-R P.531-8        required for the design of Earth-space
                                                             telecommunication systems
non-line-of-sight                  Rec. ITU-R P.681-6        Propagation data required for the design of
                                   Rec.ITU-R P.1411-3        Earth-space land mobile telecommunication
                                                             systems
non-low Earth orbit (non-LEO)      Rec. ITU-R P.681-6        Propagation data required for the design of
                                                             Earth-space land mobile telecommunication
                                                             systems
non-resonant Debye spectrum        Rec. ITU-R P.676-7        Attenuation by atmospheric gases
non-tracking directional antenna   Rec.ITU-R P.1448-0        Determination of the coordination of the area
                                                             around an Earth station the frequency bands
                                                             between 100 MHZ and 105 GHz

normalized *                       Rec. ITU-R P.452-12       Prediction procedure for the evaluation of
                                                             microwave interference between stations on
                                                             the surface of the Earth at frequencies
                                                             above about 0.7 GHz*
normalized factor                  Rec. ITU-R P.526-10       Propagation by Diffraction
normalized total columnar          Rec. ITU-R P.840-3        Attenuation due to Cloud and Fog
content
numerical calculation              Rec. ITU-R P.526-10       Propagation by Diffraction
numerical map function             Rec.ITU-R P.1239-0        ITU-R Reference Ionospheric
                                                             characteristics
obstacle                           Rec. ITU-R P.531-8        PROPAGATION PREDICTION
                                   Rec. ITU-R P.617-1        TECHNIQUES AND DATA REQUIRED
                                   Rec. ITU-R P.845-3        FOR THE DESIGN OF TRANS-
                                                             HORIZON RADIO-RELAY SYSTEMS
obstacles curvature radius         Rec. ITU-R P.526-10       Propagation by Diffraction
obstacles surface smoothness       Rec. ITU-R P.526-10       Propagation by Diffraction
criterion
ohmic dissipation                  Rec. ITU-R P.532-1        Ionospheric Effects and Operational
                                                             Considerations Associated with the Artificial
                                                             Modification of the Ionosphere and the
                                                             Radio Wave Channel
omni-directional                   Rec. ITU-R P.681-6        Propagation data required for the design of
                                                             Earth-space land mobile telecommunication
                                                             systems
omnidirectional antennas           Rec. ITU-R P.845-3        HF field strength measurement
operational MUF                    Rec. ITU-R P.373-8        Definitions of Maximum and Minimum
                                                             Transmission Frequencies
Optical density                    Rec.   ITU-R   P.833-5    Attenuation in Vegetation
Optical depth(d)                   Rec.   ITU-R   P.372-8    Radio Noise
optimum working frequency          Rec.   ITU-R   P.313-10   Exchange of information for short-term
(OWF or FOT)                       Rec.   ITU-R   P.373-8    forecasts and transmission of ionospheric
                                                             disturbance warnings
ordinary waves                      Rec. ITU-R P.532-1    Ionospheric Effects and Operational
                                                          Considerations Associated with the Artificial
                                                          Modification of the Ionosphere and the
                                                          Radio Wave Channel
orthogonal axes                     Rec. ITU-R P.525-2    Calculation of Free Space Attenuation
outage                              Rec. ITU-R P.530-11     Propagation data and prediction methods
                                                           required for the design of terrestrial line-of-
                                                                           sight systems
outage events                       Rec. ITU-R P.1623-1   Prediction method of fade dynamics on
                                                          Earth-space paths
outer-conductor                     Rec.ITU-R P.1406-0    Propagation effects relating to terrestrial
                                                          land mobile service in the VHF and UHF
                                                          bands
overall circuit reliability (OCR)   Rec. ITU-R P.842-3    Computation of reliability and compatibility of
                                                          HF radio systems
overdense trails                    Rec. ITU-R P.843-1    Communication by Meteor-burst
                                                          Propagation
Overlapping                         Rec. ITU-R P.526-10   Propagation by Diffraction


parametric wave-plasma              Rec. ITU-R P.532-1    Ionospheric Effects and Operational
instability                                               Considerations Associated with the Artificial
                                                          Modification of the Ionosphere and the
                                                          Radio Wave Channel
Path attenuation                    Rec. ITU-R P.1322-0   Radiometric estimation of atmospheric
                                                          attenuation
path basic MUF                      Rec.ITU-R P.1240-0    ITU-R methods of basic MUF, operational
                                                          MUF
path clearance                      Rec. ITU-R P.530-11     Propagation data and prediction methods
                                    Rec. ITU-R P.526-10    required for the design of terrestrial line-of-
                                                                           sight systems
path diversity                      Rec. ITU-R P.618-8    Propagation data and prediction methods
                                    Rec. ITU-R P.681-6    required for the design of Earth-space
                                                          telecommunication systems
path loss                           Rec.ITU-R P.1411-3    Propagation data and prediction methods for
                                                          the planning of short-range outdoor
                                                          radiocommunication systems and radio local
                                                          area networks in the frequency range 300
                                                          MHz to 100 GHz
path midpoint                       Rec.ITU-R P.1148-1    Standardizing procedure for cmparing
                                                          predicted and oberved HF sky-wave
                                                          observed HF signal intensities and the
                                                          presentation of such comparisons
path profile                        Rec. ITU-R P.530-11     Propagation data and prediction methods
                                                           required for the design of terrestrial line-of-
                                                                           sight systems
path reliability                    Rec. ITU-R P.842-3    Computation of reliability and compatibility of
                                                          HF radio systems
path-asymmetry factor            Rec.ITU-R P.1410-3    Propagation data and prediction methods
                                                       required for the design of terrestrial
                                                       broadband millimetric radio access systems
                                                       operating in frequency range of about 20-50
                                                       GHz
path-length difference (delay)   Rec. ITU-R P.1407-2   Multipath propagation parametrization of its
                                                       characteristics
path-loss exponent               Rec.ITU-R P.1791-0    Propagation prediction methods for
                                                       assessment of the impact of ultra- wideband
                                                       devices
peak electron density            Rec. ITU-R P.531-8    Ionospheric propagation data and prediction
                                                       methods required for the design of
                                                       satellite services and systems
peak-to-noise ratio              Rec.ITUR P. 311-12    Acquisition, presentation and analysis of
                                                       data in studies of tropospheric propagation

penetration and spread waves     Rec. ITU-R P.527-3    Electrical characteristics of the surface of
                                                       the Earth
penetration loss                 Rec. ITU-R P.679-3    Propagation data required for the design of
                                                       broadcasting-satellite systems
penumbra width                   Rec. ITU-R P.526-10   Propagation by Diffraction
percentage location              Rec. ITU-R P.1546-2      Method for point-to-area predictions for
                                                         terrestrial services in the frequency range
                                                                     30 MHz to 3 000 MHz
Percentage of time gradient      Rec. ITU-R P.453-9    The Radio refractive index its formulae and
                                                       refractive data
Permeability(m)                  Rec. ITU-R P.527-3    Electrical characteristics of the surface of
                                                       the Earth
Permitivity(є)                   Rec. ITU-R P.527-3    Electrical characteristics of the surface of
                                                       the Earth
perturbations                    Rec. ITU-R P.313-10   Exchange of information for short-term
                                                       forecasts and transmission of ionospheric
                                                       disturbance warnings
phase decorrelation              Rec. ITU-R P.618-8    Propagation data and prediction methods
                                                       required for the design of Earth-space
                                                       telecommunication systems
Physical temperature of the      Rec. ITU-R P.372-8    Radio Noise
surface of the Earth
pico-cell                        Rec.ITU-R P.1411-3    Propagation data and prediction methods for
                                                       the planning of short-range outdoor
                                                       radiocommunication systems and radio local
                                                       area networks in the frequency range 300
                                                       MHz to 100 GHz
plane of propagation             Rec. ITU-R P.843-1    Communication by Meteor-burst
                                                       Propagation
plane passive reflectors         Rec. ITU-R P.530-11     Propagation data and prediction methods
                                                        required for the design of terrestrial line-of-
                                                                       sight systems
plane wave                       Rec. ITU-R P.525-2    Calculation of Free Space Attenuation
plasma density                   Rec. ITU-R P.1060-0   Propagation factors affecting frequency
                                                       sharing in HF terrestrial systems
plasma frequency                  Rec. ITU-R P.684-4    Prediction of field strength at frequencies
                                                        below about 150 kHz
plasma waves                      Rec. ITU-R P.532-1    Ionospheric Effects and Operational
                                                        Considerations Associated with the Artificial
                                                        Modification of the Ionosphere and the
                                                        Radio Wave Channel
point-to-area field strength      Rec.ITU-R P. 370-7    VHF and UHF Propagation Curves for the
                                                        Frequency range from 30 MHz to 1000 MHz

point-to-multipoint (P-MP) system Rec.ITU-R P.1410-3    Propagation data and prediction methods
                                                        required for the design of terrestrial
                                                        broadband millimetric radio access systems
                                                        operating in frequency range of about 20-50
                                                        GHz
point-to-point area links         Rec. ITU-R P.525-2    Calculation of Free Space Attenuation
point-to-point propagation path   Rec.ITU-R P.1240-0    ITU-R methods of basic MUF, operational
                                                        MUF
polar                             Rec. ITU-R P.617-1    PROPAGATION PREDICTION
                                                        TECHNIQUES AND DATA REQUIRED
                                                        FOR THE DESIGN OF TRANS-
                                                        HORIZON RADIO-RELAY SYSTEMS
polarization coupling loss        Rec.ITU-R P. 435-7    Sky-wave field-strenght prediction method
                                                        for Broadcasting Service in the Frequency
                                                        range 150 to 1600KHz.
polarization diversity            Rec.ITU-R P.1406-0    Propagation effects relating to terrestrial
                                                        land mobile service in the VHF and UHF
                                                        bands
polarization(polarisation)*       Rec. ITU-R P.452-12   Prediction procedure for the evaluation of
                                  Rec. ITU-R P.530-11   microwave interference between stations on
                                  Rec. ITU-R P.531-8    the surface of the Earth at frequencies
                                  Rec. ITU-R P.620-6    above about 0.7 GHz*
                                  Rec. ITU-R P.679-3
                                  Rec. ITU-R P.682-1
                                  Rec. ITU-R P.684-4
                                  Rec. ITU-R P.843-1
                                  Rec. ITU-R P.1060-0
                                  Rec. ITU-R P.1546-2
power flux-density                Rec. ITU-R P.525-2    Calculation of Free Space Attenuation
                                  Rec. ITU-R P.532-1
power spectra                     Rec. ITU-R P.531-8    Ionospheric propagation data and prediction
                                                        methods required for the design of
                                                        satellite services and systems
power transmission lines          Rec. ITU-R P.372-8    Radio Noise
precipitation scatter             Rec. ITU-R P.619-1    Propagation Data required for the Evaluation
                                                        of Interference between Stations in Space
                                                        ant those on the Surface of the Earth

predicted minus measured          Rec.ITU-R P.1148-1    Standardizing procedure for cmparing
                                                        predicted and oberved HF sky-wave
                                                        observed HF signal intensities and the
                                                        presentation of such comparisons
prediction of basic and            Rec.ITU-R P. 434-6   ITU-R Reference Ionospheric
operational MUFs                                        Characteristics and Methods of Basic MUF
                                                        Operational MUF and Ray-path Prediction

prediction of F2-layer basic MUF Rec.ITU-R P. 434-6     ITU-R Reference Ionospheric
                                                        Characteristics and Methods of Basic MUF
                                                        Operational MUF and Ray-path Prediction

prediction of foE                  Rec.ITU-R P. 434-6   ITU-R Reference Ionospheric
                                                        Characteristics and Methods of Basic MUF
                                                        Operational MUF and Ray-path Prediction

prediction of foF1                 Rec.ITU-R P. 434-6   ITU-R Reference Ionospheric
                                                        Characteristics and Methods of Basic MUF
                                                        Operational MUF and Ray-path Prediction

prediction of foF2 and M(3000)F2 Rec.ITU-R P. 434-6     ITU-R Reference Ionospheric
                                                        Characteristics and Methods of Basic MUF
                                                        Operational MUF and Ray-path Prediction

prediction of h¢F and h¢F,F2       Rec.ITU-R P. 434-6   ITU-R Reference Ionospheric
                                                        Characteristics and Methods of Basic MUF
                                                        Operational MUF and Ray-path Prediction

prediction of point-to-area path   Rec.ITU-R P. 370-7   VHF and UHF Propagation Curves for the
loss                                                    Frequency range from 30 MHz to 1000 MHz

prediction of ray path             Rec.ITU-R P. 434-6   ITU-R Reference Ionospheric
                                                        Characteristics and Methods of Basic MUF
                                                        Operational MUF and Ray-path Prediction

prediction of ray paths            Rec.ITU-R P. 434-6   ITU-R Reference Ionospheric
                                                        Characteristics and Methods of Basic MUF
                                                        Operational MUF and Ray-path Prediction

prediction of the percentage of    Rec.ITU-R P. 434-6   ITU-R Reference Ionospheric
occurrence of spread-F                                  Characteristics and Methods of Basic MUF
                                                        Operational MUF and Ray-path Prediction

preparation of conductivities      Rec. ITU-R P.832-2   World Atlas of Conductivity
maps
primarily trees                    Rec.ITU-R P.1411-3   Propagation data and prediction methods for
                                                        the planning of short-range outdoor
                                                        radiocommunication systems and radio local
                                                        area networks in the frequency range 300
                                                        MHz to 100 GHz
probability of occurrence of fades Rec.ITUR P. 311-12   Acquisition, presentation and analysis of
of duration d longer than D (s)                         data in studies of tropospheric propagation

probability of occurrency of the   Rec. ITU-R P.687-1   Characterization of natural variability of
events(P)                                               propagation phenomena
profile extraction           Rec. ITU-R P.1058-2   Digital topographic database for propagation
                                                   studies
Program HRMNTH               Rec.ITU-R P. 434-6    ITU-R Reference Ionospheric
                                                   Characteristics and Methods of Basic MUF
                                                   Operational MUF and Ray-path Prediction

Program MUFFY                Rec.ITU-R P. 434-6    ITU-R Reference Ionospheric
                                                   Characteristics and Methods of Basic MUF
                                                   Operational MUF and Ray-path Prediction

Program WOMAP                Rec.ITU-R P. 434-6    ITU-R Reference Ionospheric
                                                   Characteristics and Methods of Basic MUF
                                                   Operational MUF and Ray-path Prediction

propagation                  All SG3 Recs          Prediction procedure for the evaluation of
                                                   microwave interference between stations on
                                                   the surface of the Earth at frequencies
                                                   above about 0.7 GHz*
propagation by diffraction   Rec. ITU-R P.526-10   Propagation by Diffraction
propagation delay            Rec. ITU-R P.619-1    Propagation Data required for the Evaluation
                                                   of Interference between Stations in Space
                                                   ant those on the Surface of the Earth

propagation loss             Rec. ITU-R P.530-11     Propagation data and prediction methods
                                                    required for the design of terrestrial line-of-
                                                                     sight systems
propagation modes            Rec. ITU-R P.845-3    HF field strength measurement
propagation zones            Rec. ITU-R P.1546-2      Method for point-to-area predictions for
                                                     terrestrial services in the frequency range
                                                                 30 MHz to 3 000 MHz
protection angle             Rec. ITU-R P.620-6    Propagation data required for the evaluation
                                                   of coordination distances in the frequency
                                                   range 100 MHz to 105 GHz
purely empirical method      Rec.ITUR P. 311-12    Acquisition, presentation and analysis of
                                                   data in studies of tropospheric propagation

Q values                     Rec. ITU-R P.841-4    Conversion of annual statistics to worst-
                                                   month statistics
quartile                     Rec. ITU-R P.845-3    HF field strength measurement
quite rural                  Rec. ITU-R P.372-8    Radio Noise
r.m.s. delay spread          Rec.ITU-R P.1406-0    Propagation effects relating to terrestrial
                                                   land mobile service in the VHF and UHF
                                                   bands
r.m.s. field strength        Rec. ITU-R P.525-2    Calculation of Free Space Attenuation
r.m.s. value                 Rec.ITUR P. 311-12    Acquisition, presentation and analysis of
                                                   data in studies of tropospheric propagation

radar cross section          Rec. ITU-R P.532-1    Ionospheric Effects and Operational
                                                   Considerations Associated with the Artificial
                                                   Modification of the Ionosphere and the
                                                   Radio Wave Channel
radar target cross-section   Rec. ITU-R P.525-2    Calculation of Free Space Attenuation
radiance                              Rec. ITU-R P.1621-1      Propagation data required for the design for
                                                               Earth-space systems operating
radiated power                        Rec.ITU-R P. 435-7       Sky-wave field-strenght prediction method
                                                               for Broadcasting Service in the Frequency
                                                               range 150 to 1600KHz.
radiation from lightning              Rec. ITU-R P.372-8       Radio Noise
discharges
radio emissions                       Rec.   ITU-R   P.372-8   Radio Noise
radio natural sources                 Rec.   ITU-R   P.372-8   Radio Noise
radio noise                           Rec.   ITU-R   P.372-8   Radio Noise
radio path length                     Rec.   ITU-R   P.525-2   Calculation of Free Space Attenuation
radio refractivity                    Rec.   ITU-R   P.453-9   The Radio refractive index its formulae and
                                      Rec.   ITU-R   P.619-1   refractive data
radio refractivity index              Rec.   ITU-R   P.453-9   The Radio refractive index its formulae and
                                                               refractive data
radio sky temperature                 Rec. ITU-R P.372-8       Radio Noise
radio systems design                  Rec. ITU-R P.372-8       Radio Noise
radio upper decile to medium          Rec. ITU-R P.372-8       Radio Noise
value
radio-climatic                        Rec. ITU-R P.452-12      Prediction procedure for the evaluation of
                                                               microwave interference between stations on
                                                               the surface of the Earth at frequencies
                                                               above about 0.7 GHz*
radio-climatic zones                  Rec. ITU-R P.620-6       Propagation data required for the evaluation
                                                               of coordination distances in the frequency
                                                               range 100 MHz to 105 GHz
radiometeorological data              Rec.ITUR P. 311-12       Acquisition, presentation and analysis of
                                                               data in studies of tropospheric propagation

radio-meteorological zones            Rec.ITU-R P.1448-0       Determination of the coordination of the area
                                                               around an Earth station the frequency bands
                                                               between 100 MHZ and 105 GHz

radiometric estimation                Rec. ITU-R P.1322-0      Radiometric estimation of atmospheric
                                                               attenuation
radiometric measurements              Rec. ITU-R P.1322-0      Radiometric estimation of atmospheric
                                                               attenuation
radiosonde                            Rec. ITU-R P.453-9       The Radio refractive index its formulae and
                                                               refractive data
rain attenuation                      Rec. ITU-R P.530-11        Propagation data and prediction methods
                                                                required for the design of terrestrial line-of-
                                                                                sight systems
rain cell                             Rec. ITU-R P.620-6       Propagation data required for the evaluation
                                                               of coordination distances in the frequency
                                                               range 100 MHz to 105 GHz
rain effect slant path attenuation Rec. ITU-R P.841-4          Conversion of annual statistics to worst-
                                                               month statistics
rain effect terrestrial attenuation   Rec. ITU-R P.841-4       Conversion of annual statistics to worst-
                                                               month statistics
rain fading                           Rec. ITU-R P.531-8       Ionospheric propagation data and prediction
                                                               methods required for the design of
                                                               satellite services and systems
rain height                         Rec. ITU-R P.452-12   Prediction procedure for the evaluation of
                                    Rec. ITU-R P.620-6    microwave interference between stations on
                                                          the surface of the Earth at frequencies
                                                          above about 0.7 GHz*
rain integration time conversion    Rec.ITUR P. 311-12    Acquisition, presentation and analysis of
factor                                                    data in studies of tropospheric propagation

rain scatter on terrestrial paths   Rec.ITUR P. 311-12    Acquisition, presentation and analysis of
                                                          data in studies of tropospheric propagation

rain / rainfall rate               Rec.ITUR P. 311-12     Prediction procedure for the evaluation of
                                   Rec. ITU-R P.452-12    microwave interference between stations on
                                   Rec. ITU-R P.618-8     the surface of the Earth at frequencies
                                   Rec. ITU-R P.620-6     above about 0.7 GHz*
                                   Rec. ITU-R P.841-4
randomically distributed receivers Rec. ITU-R P.525-2     Calculation of Free Space Attenuation

range delay                         Rec. ITU-R P.618-8    Propagation data and prediction methods
                                                          required for the design of Earth-space
                                                          telecommunication systems
range of penetration depth(d)       Rec. ITU-R P.527-3    Electrical characteristics of the surface of
                                                          the Earth
ratio of signal-to-background-      Rec. ITU-R P.1060-0   Propagation factors affecting frequency
noise-plus-interference                                   sharing in HF terrestrial systems
ray banding                         Rec. ITU-R P.834-6    Effects of Tropospheric Refaction on the
                                                          Radiowave Propagation
ray bending                         Rec. ITU-R P.619-1    Propagation Data required for the Evaluation
                                                          of Interference between Stations in Space
                                                          ant those on the Surface of the Earth

ray-launching techniques            Rec.ITU-R P.1406-0    Propagation effects relating to terrestrial
                                                          land mobile service in the VHF and UHF
                                                          bands
Rayleigh approximation              Rec. ITU-R P.840-3    Attenuation due to Cloud and Fog
Rayleigh fading                     Rec. ITU-R P.845-3    HF field strength measurement
Rayleigh scattering                 Rec. ITU-R P.620-6    Propagation data required for the evaluation
                                    Rec. ITU-R P.1621-1   of coordination distances in the frequency
                                    Rec. ITU-R P.1622-0   range 100 MHz to 105 GHz
ray-tracing techniques              Rec.ITU-R P.1410-3    Propagation data and prediction methods
                                                          required for the design of terrestrial
                                                          broadband millimetric radio access systems
                                                          operating in frequency range of about 20-50
                                                          GHz
received field strength (E)         Rec. ITU-R P.526-10   Propagation by Diffraction
receiving/mobile antenna            Rec. ITU-R P.1546-2      Method for point-to-area predictions for
                                                            terrestrial services in the frequency range
                                                                        30 MHz to 3 000 MHz
reception reliability               Rec. ITU-R P.842-3    Computation of reliability and compatibility of
                                                          HF radio systems
reference time                      Rec.ITU-R P. 435-7    Sky-wave field-strenght prediction method
                                                          for Broadcasting Service in the Frequency
                                                          range 150 to 1600KHz.
reflection coefficient            Rec. ITU-R P.532-1        Ionospheric Effects and Operational
                                  Rec. ITU-R P.684-4        Considerations Associated with the Artificial
                                  Rec. ITU-R P.1409-0       Modification of the Ionosphere and the
                                                            Radio Wave Channel
reflection height                 Rec. ITU-R P.684-4        Prediction of field strength at frequencies
                                                            below about 150 kHz
reflection point                  Rec. ITU-R P.534-4        Method of Calculating sporatic E Field
                                                            Strength
reflections                       Rec. ITU-R P.844-1        Ionospheric factors affecting frequency
                                                            sharing in the VHF and UHF bands (30 MHz-
                                                            3 GHz)
reflectivity of the scattering plane Rec.ITU-R P.1406-0     Propagation effects relating to terrestrial
                                                            land mobile service in the VHF and UHF
                                                            bands
refraction                        Rec.   ITU-R   P.452-12   Prediction procedure for the evaluation of
                                  Rec.   ITU-R   P.530-11   microwave interference between stations on
                                  Rec.   ITU-R   P.532-1    the surface of the Earth at frequencies
                                  Rec.   ITU-R   P.618-8    above about 0.7 GHz*
                                  Rec.   ITU-R   P.620-6
                                  Rec.   ITU-R   P.679-3
                                  Rec.   ITU-R   P.680-3
                                  Rec.   ITU-R   P.682-1
                                  Rec.   ITU-R   P.684-4
                                  Rec.   ITU-R   P.1060-0
                                  Rec.   ITU-R   P.1622-0
refractive defocusing             Rec.   ITU-R   P.618-8    Propagation data and prediction methods
                                  Rec.   ITU-R   P.680-3    required for the design of Earth-space
                                                            telecommunication systems
refractive focusing               Rec. ITU-R P.618-8        Propagation data and prediction methods
                                  Rec. ITU-R P.680-3        required for the design of Earth-space
                                                            telecommunication systems
refractive index                  Rec.   ITU-R   P.530-11   Propagation data and prediction methods
                                  Rec.   ITU-R   P.531-8    required for the design of Earth-space
                                  Rec.   ITU-R   P.532-1    telecommunication systems
                                  Rec.   ITU-R   P.618-8
                                  Rec.   ITU-R   P.619-1
                                  Rec.   ITU-R   P.679-3
                                  Rec.   ITU-R   P.1622-0
refractive index gradient         Rec.   ITU-R   P.530-11     Propagation data and prediction methods
                                                             required for the design of terrestrial line-of-
                                                                              sight systems
refractivity                      Rec. ITU-R P.617-1           Method for point-to-area predictions for
                                  Rec. ITU-R P.1546-2         terrestrial services in the frequency range
                                                                          30 MHz to 3 000 MHz
refractivity data                 Rec. ITU-R P.453-9        The Radio refractive index its formulae and
                                                            refractive data
refractivity gradient             Rec. ITU-R P.453-9        The Radio refractive index its formulae and
                                  Rec. ITU-R P.618-8        refractive data

refractivity gradient near the    Rec. ITU-R P.453-9        The Radio refractive index its formulae and
Earth's surface                                             refractive data
refractivity-height               Rec. ITU-R P.618-8       Propagation data and prediction methods
                                                           required for the design of Earth-space
                                                           telecommunication systems
regions of the ionosphere         Rec. ITU-R P.531-8       Ionospheric propagation data and prediction
                                                           methods required for the design of
                                                           satellite services and systems
relativehHumidity                 Rec. ITU-R P.453-9       The Radio refractive index its formulae and
                                                           refractive data
relative permeability             Rec. ITU-R P.527-3       Electrical characteristics of the surface of
                                                           the Earth
reliability                       Rec. ITU-R P.842-3       Computation of reliability and compatibility of
                                                           HF radio systems
representative clutter height     Rec. ITU-R P.1546-2         Method for point-to-area predictions for
                                                             terrestrial services in the frequency range
                                                                         30 MHz to 3 000 MHz
representative height of ground   Rec. ITU-R P.1546-2         Method for point-to-area predictions for
cover                                                        terrestrial services in the frequency range
                                                                         30 MHz to 3 000 MHz
re-radiating structures           Rec.   ITU-R   P.845-3   HF field strength measurement
residential curves                Rec.   ITU-R   P.372-8   Radio Noise
RET parameters                    Rec.   ITU-R   P.833-5   Attenuation in Vegetation
return period                     Rec.   ITU-R   P.687-1   Characterization of natural variability of
                                                           propagation phenomena
rhombic antennas                  Rec. ITU-R P.845-3       HF field strength measurement
right ascension(l)                Rec. ITU-R P.372-8       Radio Noise
riometer                          Rec. ITU-R P.531-8       Ionospheric propagation data and prediction
                                                           methods required for the design of
                                                           satellite services and systems
rolling terrain                   Rec. ITU-R P.526-10      Propagation by Diffraction
roof-top level                    Rec.ITU-R P.1411-3       Propagation data and prediction methods for
                                                           the planning of short-range outdoor
                                                           radiocommunication systems and radio local
                                                           area networks in the frequency range 300
                                                           MHz to 100 GHz
rough surface                     Rec. ITU-R P.526-10      Propagation by Diffraction
rough terrain                     Rec. ITU-R P.530-11        Propagation data and prediction methods
                                                            required for the design of terrestrial line-of-
                                                                             sight systems
route-diversity                   Rec. ITU-R P.530-11        Propagation data and prediction methods
                                                            required for the design of terrestrial line-of-
                                                                             sight systems
Runge-Kutta technique             Rec. ITU-R P.684-4       Prediction of field strength at frequencies
                                                           below about 150 kHz
rural or open area                Rec. ITU-R P.1546-2         Method for point-to-area predictions for
                                                             terrestrial services in the frequency range
                                                                         30 MHz to 3 000 MHz
satellite constellations          Rec. ITU-R P.618-8       Propagation data and prediction methods
                                  Rec. ITU-R P.681-6       required for the design of Earth-space
                                                           telecommunication systems
satellite diversity               Rec. ITU-R P.681-6       Propagation data required for the design of
                                                           Earth-space land mobile telecommunication
                                                           systems
satellite longitudinal       Rec. ITU-R P.372-8        Radio Noise
satellite systems            Rec. ITU-R P.618-8        Propagation data and prediction methods
                             Rec. ITU-R P.679-3        required for the design of Earth-space
                                                       telecommunication systems
saturation vapour pressure   Rec. ITU-R P.453-9        The Radio refractive index its formulae and
                                                       refractive data
scatter                      Rec.   ITU-R   P.452-12   Prediction procedure for the evaluation of
                             Rec.   ITU-R   P.617-1    microwave interference between stations on
                             Rec.   ITU-R   P.618-8    the surface of the Earth at frequencies
                             Rec.   ITU-R   P.619-1    above about 0.7 GHz*
                             Rec.   ITU-R   P.620-6
                             Rec.   ITU-R   P.679-3
                             Rec.   ITU-R   P.843-1
                             Rec.   ITU-R   P.844-1
                             Rec.   ITU-R   P.1409-0
                             Rec.   ITU-R   P.1622-0
scattering cross-sections    Rec.   ITU-R   P.681-6    Propagation data required for the design of
                                                       Earth-space land mobile telecommunication
                                                       systems
scintillation                Rec.   ITU-R   P.452-12   Prediction procedure for the evaluation of
                             Rec.   ITU-R   P.531-8    microwave interference between stations on
                             Rec.   ITU-R   P.618-8    the surface of the Earth at frequencies
                             Rec.   ITU-R   P.619-1    above about 0.7 GHz*
                             Rec.   ITU-R   P.679-3
                             Rec.   ITU-R   P.680-3
                             Rec.   ITU-R   P.681-6
                             Rec.   ITU-R   P.682-1
                             Rec.   ITU-R   P.844-1
                             Rec.   ITU-R   P.846-1
                             Rec.   ITU-R   P.1409-0
                             Rec.   ITU-R   P.1622-0
                             Rec.   ITU-R   P.1623-1
scintillation fading         Rec.   ITU-R   P.530-11     Propagation data and prediction methods
                                                        required for the design of terrestrial line-of-
                                                                         sight systems
scintillation index          Rec. ITU-R P.531-8        Ionospheric propagation data and prediction
                                                       methods required for the design of
                                                       satellite services and systems
screening                    Rec. ITU-R P.533-8        HF propagation prediction method
sea gain                     Rec.ITU-R P. 435-7        Sky-wave field-strenght prediction method
                                                       for Broadcasting Service in the Frequency
                                                       range 150 to 1600KHz.
sea ice                      Rec. ITU-R P.527-3        Electrical characteristics of the surface of
                                                       the Earth
sea level                    Rec. ITU-R P.1621-1       Propagation data required for the design for
                                                       Earth-space systems operating
sea path                     Rec. ITU-R P.1546-2          Method for point-to-area predictions for
                                                         terrestrial services in the frequency range
                                                                     30 MHz to 3 000 MHz
sea water                    Rec. ITU-R P.527-3        Electrical characteristics of the surface of
                                                       the Earth
sea-gain correction             Rec.ITU-R P. 435-7    Sky-wave field-strenght prediction method
                                                      for Broadcasting Service in the Frequency
                                                      range 150 to 1600KHz.
seasonal fluctuation value      Rec. ITU-R P.834-6    Effects of Tropospheric Refaction on the
parameters                                            Radiowave Propagation
seasonal variation              Rec. ITU-R P.527-3    Electrical characteristics of the surface of
                                                      the Earth
second order longitude          Rec.ITU-R P.1239-0    ITU-R Reference Ionospheric
                                                      characteristics
semi-Epstein layers             Rec. ITU-R P.531-8    Ionospheric propagation data and prediction
                                                      methods required for the design of
                                                      satellite services and systems
service area                    Rec. ITU-R P.1546-2      Method for point-to-area predictions for
                                                        terrestrial services in the frequency range
                                                                    30 MHz to 3 000 MHz

service planning                Rec.ITU-R P. 434-6    ITU-R Reference Ionospheric
                                                      Characteristics and Methods of Basic MUF
                                                      Operational MUF and Ray-path Prediction

service reliability             Rec. ITU-R P.842-3    Computation of reliability and compatibility of
                                                      HF radio systems
settled field distance          Rec.ITU-R P.1411-3    Propagation data and prediction methods for
                                                      the planning of short-range outdoor
                                                      radiocommunication systems and radio local
                                                      area networks in the frequency range 300
                                                      MHz to 100 GHz
shadow zone                     Rec. ITU-R P.684-4    Prediction of field strength at frequencies
                                                      below about 150 kHz
shadowing                       Rec. ITU-R P.679-3    Propagation data required for the design of
                                Rec. ITU-R P.681-6    broadcasting-satellite systems
                                Rec.ITU-R P.1406-0
                                Rec. ITU-R P.1546-2
shadowing cross-correlation     Rec. ITU-R P.681-6    Propagation data required for the design of
coefficient                                           Earth-space land mobile telecommunication
                                                      systems
shadowing loss by surrounding   Rec. ITU-R P.1407-2   Multipath propagation parametrization of its
objects                                               characteristics
sharing                         Rec. ITU-R P.1409-0   Propagation Data and Prediction Methods
                                                      Required for the Design of Systems Using
                                                      High Altitude Platform Stations At About 47
                                                      GHz
short-range                     Rec.ITU-R P.1411-3    Propagation data and prediction methods for
                                                      the planning of short-range outdoor
                                                      radiocommunication systems and radio local
                                                      area networks in the frequency range 300
                                                      MHz to 100 GHz
side diffraction component      Rec. ITU-R P.833-5    Attenuation in Vegetation
side-lobe gain                  Rec.ITU-R P.1412-0    Propagation data for the evaluation of
                                                      coordination between Earth station in
                                                      working in the bidirectionally allocated
                                                      frequency bands
sidescattered                    Rec. ITU-R P.1060-0     Propagation factors affecting frequency
                                                         sharing in HF terrestrial systems
signal contamination                Rec. ITU-R P.845-3   HF field strength measurement
signal/noise ratio /signal-to-noise Rec. ITU-R P.373-8   Definitions of Maximum and Minimum
ratio                               Rec. ITU-R P.533-8   Transmission Frequencies
                                    Rec. ITU-R P.618-8
                                    Rec. ITU-R P.842-3
                                    Rec. ITU-R P.843-1
                                    Rec. ITU-R P.845-3
signal-intensity                    Rec. ITU-R P.845-3   HF field strength measurement
signal-to-background ratio          Rec. ITU-R P.842-3   Computation of reliability and compatibility of
                                                         HF radio systems
signal-to-interference ratio     Rec. ITU-R P.680-3      Propagation data required for the design of
                                 Rec. ITU-R P.842-3      earth-space maritime mobile
                                                         telecommunication systems
single knife-edge obstacles      Rec. ITU-R P.526-10     Propagation by Diffraction
single round obstacles           Rec. ITU-R P.526-10     Propagation by Diffraction
single walls                     Rec. ITU-R P.681-6      Propagation data required for the design of
                                                         Earth-space land mobile telecommunication
                                                         systems
single-sideband                  Rec. ITU-R P.845-3      HF field strength measurement
site diversity                   Rec. ITU-R P.618-8      Propagation data and prediction methods
                                                         required for the design of Earth-space
                                                         telecommunication systems
site shielding                   Rec. ITU-R P.620-6      Propagation data required for the evaluation
                                                         of coordination distances in the frequency
                                                         range 100 MHz to 105 GHz
site-specific                    Rec.ITU-R P.1411-3      Propagation data and prediction methods for
                                                         the planning of short-range outdoor
                                                         radiocommunication systems and radio local
                                                         area networks in the frequency range 300
                                                         MHz to 100 GHz
sixth-order spherical-harmonic   Rec.ITU-R P. 434-6      ITU-R Reference Ionospheric
                                                         Characteristics and Methods of Basic MUF
                                                         Operational MUF and Ray-path Prediction

sky brightness temperature       Rec. ITU-R P.1322-0     Radiometric estimation of atmospheric
                                                         attenuation
sky-noise temperature            Rec. ITU-R P.618-8      Propagation data and prediction methods
                                                         required for the design of Earth-space
                                                         telecommunication systems
sky-wave                         Rec. ITU-R P.534-4      Method of Calculating sporatic E Field
                                 Rec. ITU-R P.684-4      Strength
                                 Rec. ITU-R P.845-3
sky-wave field strength          Rec.ITU-R P. 435-7      Sky-wave field-strenght prediction method
                                                         for Broadcasting Service in the Frequency
                                                         range 150 to 1600KHz.
sky-wave modes                   Rec.ITU-R P.1321-0      Propagation factor affecting systems using
                                                         digital modulation techniques at LF and MF

sky-wave propagation             Rec. ITU-R P.533-8      HF propagation prediction method
sky-wave signals                       Rec.ITU-R P.1321-0    Propagation factor affecting systems using
                                                             digital modulation techniques at LF and MF

slant path /slant-path             Rec. ITU-R P.618-8        Attenuation by atmospheric gases
                                   Rec. ITU-R P.676-7
slant path annual rain attenuation Rec.ITUR P. 311-12        Acquisition, presentation and analysis of
and rain rate statistics                                     data in studies of tropospheric propagation

slant path annual XPD statistics       Rec.ITUR P. 311-12    Acquisition, presentation and analysis of
                                                             data in studies of tropospheric propagation

slant path annual XPD statistics       Rec.ITUR P. 311-12    Acquisition, presentation and analysis of
conditioned to CPA                                           data in studies of tropospheric propagation

slant path fade duration statistics Rec.ITUR P. 311-12       Acquisition, presentation and analysis of
                                                             data in studies of tropospheric propagation

slant path fade slope statistics       Rec.ITUR P. 311-12    Acquisition, presentation and analysis of
                                                             data in studies of tropospheric propagation

slant path site diversity statistics   Rec.ITUR P. 311-12    Acquisition, presentation and analysis of
                                                             data in studies of tropospheric propagation

slant path standard deviations of Rec.ITUR P. 311-12         Acquisition, presentation and analysis of
scintillations                                               data in studies of tropospheric propagation

slant path statistics of amplitude     Rec.ITUR P. 311-12    Acquisition, presentation and analysis of
scintillations                                               data in studies of tropospheric propagation

slant path worst-month rain            Rec.ITUR P. 311-12    Acquisition, presentation and analysis of
attenuation statistics                                       data in studies of tropospheric propagation

slant propagation distance             Rec.ITU-R P. 435-7    Sky-wave field-strenght prediction method
                                                             for Broadcasting Service in the Frequency
                                                             range 150 to 1600KHz.
slant-propagation distance             Rec.ITU-R P. 435-7    Sky-wave field-strenght prediction method
                                                             for Broadcasting Service in the Frequency
                                                             range 150 to 1600KHz.
slope distance                         Rec. ITU-R P.526-10   Propagation by Diffraction
small Doppler shifts                   Rec.ITU-R P.1411-3    Propagation data and prediction methods for
                                                             the planning of short-range outdoor
                                                             radiocommunication systems and radio local
                                                             area networks in the frequency range 300
                                                             MHz to 100 GHz
small macro-cell                       Rec.ITU-R P.1411-3    Propagation data and prediction methods for
                                                             the planning of short-range outdoor
                                                             radiocommunication systems and radio local
                                                             area networks in the frequency range 300
                                                             MHz to 100 GHz
smooth spherical Earth                 Rec. ITU-R P.530-11     Propagation data and prediction methods
                                                              required for the design of terrestrial line-of-
                                                                             sight systems
smooth terrain                    Rec. ITU-R P.526-10       Propagation by Diffraction
                                  Rec. ITU-R P.530-11
smooth-earth                      Rec. ITU-R P.452-12       Prediction procedure for the evaluation of
                                                            microwave interference between stations on
                                                            the surface of the Earth at frequencies
                                                            above about 0.7 GHz*
solar cycle                       Rec. ITU-R P.313-10       Prediction of field strength at frequencies
                                  Rec. ITU-R P.371-8        below about 150 kHz
                                  Rec. ITU-R P.684-4
                                  Rec. ITU-R P.845-3
solar declination                 Rec.ITU-R P. 434-6        ITU-R Reference Ionospheric
                                  Rec.ITU-R P.1239-0        Characteristics and Methods of Basic MUF
                                                            Operational MUF and Ray-path Prediction

solar radio noise flux            Rec. ITU-R P.371-8      Choice of Indices for Long-Term Ionospheric
                                                          Predictions
solar zenith angle                Rec.ITU-R P. 434-6 Rec. Prediction of field strength at frequencies
                                  ITU-R P.684-4           below about 150 kHz
solar-index                       Rec. ITU-R P.533-8      HF propagation prediction method
space diversity                   Rec. ITU-R P.530-11       Propagation data and prediction methods
                                  Rec. ITU-R P.617-1       required for the design of terrestrial line-of-
                                                                           sight systems
spaceborne transmitters           Rec. ITU-R P.532-1      Ionospheric Effects and Operational
                                                          Considerations Associated with the Artificial
                                                          Modification of the Ionosphere and the
                                                          Radio Wave Channel
spatial distribution              Rec. ITU-R P.530-11       Propagation data and prediction methods
                                                           required for the design of terrestrial line-of-
                                                                           sight systems
spatial variability               Rec. ITU-R P.679-3      Propagation data required for the design of
                                                          broadcasting-satellite systems
spatial variability of signal     Rec. ITU-R P.1407-2     Multipath propagation parametrization of its
strength                                                  characteristics
spatial variation                 Rec. ITU-R P.843-1      Communication by Meteor-burst
                                                          Propagation
specific attenuation              Rec. ITU-R P.530-11       Propagation data and prediction methods
                                  Rec. ITU-R P.620-6       required for the design of terrestrial line-of-
                                                                           sight systems
specific attenuation by water     Rec. ITU-R P.840-3      Attenuation due to Cloud and Fog
droplets
specific attenuation coefficient K Rec. ITU-R P.840-3       Attenuation due to Cloud and Fog

specific attenuation due to       Rec. ITU-R P.833-5        Attenuation in Vegetation
Woodland
specific attenuation rate(bB/m)   Rec. ITU-R P.833-5        Attenuation in Vegetation
due to primarily scattering
spectroscopic data for oxigen     Rec. ITU-R P.676-7        Attenuation by atmospheric gases
attenuation
specular geometry                 Rec. ITU-R P.1409-0       Propagation Data and Prediction Methods
                                                            Required for the Design of Systems Using
                                                            High Altitude Platform Stations At About 47
                                                            GHz
specular reflection                 Rec.   ITU-R   P.526-10   Propagation by Diffraction
                                    Rec.   ITU-R   P.530-11
                                    Rec.   ITU-R   P.681-6
                                    Rec.   ITU-R   P.682-1
specular reflection condition       Rec.   ITU-R   P.843-1    Communication by Meteor-burst
                                                              Propagation
spherical Earth surface             Rec. ITU-R P.526-10       Propagation by Diffraction
                                    Rec. ITU-R P.684-4
sporadic E                          Rec. ITU-R P.534-4        Method of Calculating sporatic E Field
                                    Rec. ITU-R P.844-1        Strength
                                    Rec. ITU-R P.1060-0
sporadic-E ionization               Rec. ITU-R P.1546-2         Method for point-to-area predictions for
                                                               terrestrial services in the frequency range
                                                                           30 MHz to 3 000 MHz
spurious emissions field strength Rec. ITU-R P.372-8          Radio Noise
banbwidth
standard atmosphere               Rec. ITU-R P.372-8          Radio Noise
                                  Rec. ITU-R P.835-4
                                  Rec. ITU-R P.1621-1
standard deviation                Rec.ITUR P. 311-12          Radio Noise
                                  Rec. ITU-R P.372-8
                                  Rec.ITU-R P.1148-1
standard values                   Rec. ITU-R P.832-2          World Atlas of Conductivity
statistical distribution of       Rec. ITU-R P.453-9          The Radio refractive index its formulae and
refractivity gradient                                         refractive data
statistics of evaporation ducts   Rec.ITUR P. 311-12          Acquisition, presentation and analysis of
                                                              data in studies of tropospheric propagation

statistics of mean surface          Rec.ITUR P. 311-12        Acquisition, presentation and analysis of
refractivity                                                  data in studies of tropospheric propagation

statistics of rain event duration   Rec.ITUR P. 311-12        Acquisition, presentation and analysis of
                                                              data in studies of tropospheric propagation

statistics of rain intensity        Rec.ITUR P. 311-12        Acquisition, presentation and analysis of
                                                              data in studies of tropospheric propagation

street canyon / street-canyon       Rec. ITU-R P.681-6        Propagation data and prediction methods for
                                    Rec.ITU-R P.1406-0        the planning of short-range outdoor
                                    Rec.ITU-R P.1411-3        radiocommunication systems and radio local
                                                              area networks in the frequency range 300
                                                              MHz to 100 GHz
street crossings                    Rec. ITU-R P.681-6        Propagation data required for the design of
                                                              Earth-space land mobile telecommunication
                                                              systems
stretched string                    Rec. ITU-R P.526-10       Propagation by Diffraction
sub-refractive                      Rec. ITU-R P.530-11         Propagation data and prediction methods
                                                               required for the design of terrestrial line-of-
                                                                                sight systems
suburban area                       Rec. ITU-R P.681-6           Method for point-to-area predictions for
                                    Rec. ITU-R P.1546-2         terrestrial services in the frequency range
                                                                            30 MHz to 3 000 MHz
sudden ionospheric              Rec. ITU-R P.845-3       HF field strength measurement
disturbances (SIDs)
suitability                     Rec.ITUR P. 311-12       Acquisition, presentation and analysis of
                                                         data in studies of tropospheric propagation

summers mid-latitude               Rec. ITU-R P.835-4    Reference Standard Atmosphere
sunspot number                     Rec. ITU-R P.313-10   Standardizing procedure for cmparing
                                   Rec. ITU-R P.371-8    predicted and oberved HF sky-wave
                                   Rec. ITU-R P.531-8    observed HF signal intensities and the
                                   Rec. ITU-R P.684-4    presentation of such comparisons
                                   Rec. ITU-R P.846-1
                                   Rec.ITU-R P.1148-1
super-refraction /super-refractive Rec. ITU-R P.530-11      Method for point-to-area predictions for
                                   Rec. ITU-R P.1546-2     terrestrial services in the frequency range
                                                                       30 MHz to 3 000 MHz
supplementary contours          Rec.ITU-R P.1448-0       Determination of the coordination of the area
                                                         around an Earth station the frequency bands
                                                         between 100 MHZ and 105 GHz

suppressed carrier              Rec. ITU-R P.845-3       HF field strength measurement
surface mean annual             Rec. ITU-R P.1510-0      Annual mean surface temperature
temperature
surface multipath               Rec. ITU-R P.530-11        Propagation data and prediction methods
                                                          required for the design of terrestrial line-of-
                                                                           sight systems
surface reflection              Rec. ITU-R P.530-11        Propagation data and prediction methods
                                                          required for the design of terrestrial line-of-
                                                                           sight systems
surface refractivity            Rec. ITU-R P.453-9       The Radio refractive index its formulae and
                                                         refractive data
tandem network                  Rec. ITU-R P.530-11        Propagation data and prediction methods
                                                          required for the design of terrestrial line-of-
                                                                           sight systems
TCA                             Rec. ITU-R P.1546-2         Method for point-to-area predictions for
                                                           terrestrial services in the frequency range
                                                                       30 MHz to 3 000 MHz
temperature gradient            Rec. ITU-R P.835-4       Reference Standard Atmosphere
temporal distribution           Rec. ITU-R P.530-11        Propagation data and prediction methods
                                                          required for the design of terrestrial line-of-
                                                                           sight systems
temporal variation              Rec. ITU-R P.534-4       Method of Calculating sporatic E Field
                                Rec. ITU-R P.843-1       Strength
terrain clearance angle         Rec. ITU-R P.1546-2         Method for point-to-area predictions for
                                                           terrestrial services in the frequency range
                                                                       30 MHz to 3 000 MHz
terrain heights                 Rec. ITU-R P.530-11        Propagation data and prediction methods
                                                          required for the design of terrestrial line-of-
                                                                           sight systems
terrain obstacles               Rec. ITU-R P.530-11        Propagation data and prediction methods
                                                          required for the design of terrestrial line-of-
                                                                           sight systems
terrain roughness                     Rec. ITU-R P.452-12   Prediction procedure for the evaluation of
                                                            microwave interference between stations on
                                                            the surface of the Earth at frequencies
                                                            above about 0.7 GHz*
terrain shielding                     Rec. ITU-R P.530-11     Propagation data and prediction methods
                                                             required for the design of terrestrial line-of-
                                                                            sight systems
terrestrial broadcasting data         Rec.ITUR P. 311-12    Acquisition, presentation and analysis of
                                                            data in studies of tropospheric propagation

terrestrial broadcasting signal       Rec.ITUR P. 311-12    Acquisition, presentation and analysis of
level variation with location                               data in studies of tropospheric propagation

terrestrial broadcasting signal       Rec.ITUR P. 311-12    Acquisition, presentation and analysis of
level variation with time                                   data in studies of tropospheric propagation

terrestrial land mobile data          Rec.ITUR P. 311-12    Acquisition, presentation and analysis of
                                                            data in studies of tropospheric propagation

terrestrial line-of-sight path data   Rec.ITUR P. 311-12    Acquisition, presentation and analysis of
                                                            data in studies of tropospheric propagation

terrestrial path                      Rec. ITU-R P.676-7    Attenuation by atmospheric gases
terrestrial propagation               Rec. ITU-R P.679-3    Propagation data required for the design of
                                                            broadcasting-satellite systems
terrestrial stations                  Rec. ITU-R P.620-6    Propagation data required for the evaluation
                                                            of coordination distances in the frequency
                                                            range 100 MHz to 105 GHz
terrestrial trans-horizon path and Rec.ITUR P. 311-12       Acquisition, presentation and analysis of
rain scatter data                                           data in studies of tropospheric propagation

testing criteria for comparing        Rec.ITUR P. 311-12    Acquisition, presentation and analysis of
prediction methods                                          data in studies of tropospheric propagation

testing method for comparing          Rec.ITUR P. 311-12    Acquisition, presentation and analysis of
fade duration predictions                                   data in studies of tropospheric propagation

testing method for comparing          Rec.ITUR P. 311-12    Acquisition, presentation and analysis of
fade slope predictions                                      data in studies of tropospheric propagation

testing variable for comparing        Rec.ITUR P. 311-12    Acquisition, presentation and analysis of
rain attenuation predictions                                data in studies of tropospheric propagation

thermal noise                         Rec. ITU-R P.530-11     Propagation data and prediction methods
                                                             required for the design of terrestrial line-of-
                                                                             sight systems
thermal perturbation                  Rec. ITU-R P.532-1    Ionospheric Effects and Operational
                                                            Considerations Associated with the Artificial
                                                            Modification of the Ionosphere and the
                                                            Radio Wave Channel
thermal self-focusing process      Rec. ITU-R P.532-1       Ionospheric Effects and Operational
                                                            Considerations Associated with the Artificial
                                                            Modification of the Ionosphere and the
                                                            Radio Wave Channel
time percentage, percentage        Rec. ITU-R P.452-12      Prediction procedure for the evaluation of
times                              Rec. ITU-R P.530-11      microwave interference between stations on
                                   Rec. ITU-R P.534-4       the surface of the Earth at frequencies
                                   Rec. ITU-R P.681-6       above about 0.7 GHz*
                                   Rec. ITU-R P.619-1
                                   Rec. ITU-R P.620-6
                                   Rec. ITU-R P.679-3
                                   Rec. ITU-R P.680-3
                                   Rec. ITU-R P.681-6
                                   Rec. ITU-R P.1409-0
                                   Rec. ITU-R P.1546-2
time service compatibility (TSC)   Rec. ITU-R P.842-3       Computation of reliability and compatibility of
                                                            HF radio systems
time variability                   Rec. ITU-R P.1546-2         Method for point-to-area predictions for
                                                              terrestrial services in the frequency range
                                                                          30 MHz to 3 000 MHz
time-invariant gain (TIG)          Rec.ITU-R P.1448-0       Determination of the coordination of the area
                                                            around an Earth station the frequency bands
                                                            between 100 MHZ and 105 GHz

time-of-day factor                 Rec.ITU-R P. 434-6       ITU-R Reference Ionospheric
                                   Rec.ITU-R P.1239-0       Characteristics and Methods of Basic MUF
                                                            Operational MUF and Ray-path Prediction

T-junctions                        Rec. ITU-R P.681-6       Propagation data required for the design of
                                                            Earth-space land mobile telecommunication
                                                            systems
top diffraction component          Rec.   ITU-R   P.833-5   Attenuation in Vegetation
total electron content (TEC)       Rec.   ITU-R   P.531-8   Propagation data and prediction methods
                                   Rec.   ITU-R   P.618-8   required for the design of Earth-space
                                   Rec.   ITU-R   P.679-3   telecommunication systems
                                   Rec.   ITU-R   P.680-3
                                   Rec.   ITU-R   P.846-1
trail height                       Rec.   ITU-R   P.843-1   Communication by Meteor-burst
                                                            Propagation
trans- horizon radio-relay         Rec.ITU-R P. 370-7       VHF and UHF Propagation Curves for the
systems                                                     Frequency range from 30 MHz to 1000 MHz

transequatorial                    Rec. ITU-R P.844-1       Ionospheric factors affecting frequency
                                                            sharing in the VHF and UHF bands (30 MHz-
                                                            3 GHz)
trans-equatorial propagation       Rec. ITU-R P.534-4       Method of Calculating sporatic E Field
(TEP)                              Rec. ITU-R P.844-1       Strength
trans-horizon                      Rec. ITU-R P.617-1       PROPAGATION PREDICTION
                                                            TECHNIQUES AND DATA REQUIRED
                                                            FOR THE DESIGN OF TRANS-
                                                            HORIZON RADIO-RELAY SYSTEMS
trans-horizon land               Rec. ITU-R P.841-4    Conversion of annual statistics to worst-
                                                       month statistics
trans-horizon propagation        Rec. ITU-R P.452-12   Prediction procedure for the evaluation of
                                                       microwave interference between stations on
                                                       the surface of the Earth at frequencies
                                                       above about 0.7 GHz*
trans-horizon sea                Rec. ITU-R P.841-4    Conversion of annual statistics to worst-
                                                       month statistics
transient modes of propagation   Rec. ITU-R P.532-1    Ionospheric Effects and Operational
                                                       Considerations Associated with the Artificial
                                                       Modification of the Ionosphere and the
                                                       Radio Wave Channel
trans-ionospheric propagation    Rec. ITU-R P.531-8    Ionospheric propagation data and prediction
                                 Rec. ITU-R P.846-1    methods required for the design of
                                                       satellite services and systems
transmission loss                Rec. ITU-R P.452-12   Prediction procedure for the evaluation of
                                 Rec. ITU-R P.845-3    microwave interference between stations on
                                                       the surface of the Earth at frequencies
                                                       above about 0.7 GHz*
transmitter and receiver were co- Rec.ITU-R P.1410-3   Propagation data and prediction methods
located                                                required for the design of terrestrial
                                                       broadband millimetric radio access systems
                                                       operating in frequency range of about 20-50
                                                       GHz
transmitting/base antenna        Rec. ITU-R P.1546-2      Method for point-to-area predictions for
                                                         terrestrial services in the frequency range
                                                                     30 MHz to 3 000 MHz
transverse direction             Rec. ITU-R P.530-11     Propagation data and prediction methods
                                                        required for the design of terrestrial line-of-
                                                                         sight systems
transverse-electrical (TE)       Rec.ITU-R P.1406-0    Propagation effects relating to terrestrial
                                                       land mobile service in the VHF and UHF
                                                       bands
transverse-magnetic (TM)         Rec.ITU-R P.1406-0    Propagation effects relating to terrestrial
                                                       land mobile service in the VHF and UHF
                                                       bands
triangulated irregular           Rec. ITU-R P.1058-2   Digital topographic database for propagation
network(TIN)                                           studies
tropopause                       Rec. ITU-R P.372-8    Prediction procedure for the evaluation of
                                 Rec. ITU-R P.452-12   microwave interference between stations on
                                                       the surface of the Earth at frequencies
                                                       above about 0.7 GHz*
troposcatter                     Rec. ITU-R P.452-12   Prediction procedure for the evaluation of
                                                       microwave interference between stations on
                                                       the surface of the Earth at frequencies
                                                       above about 0.7 GHz*
troposphere                     Rec. ITU-R P.619-1      Propagation Data required for the Evaluation
                                Rec. ITU-R P.620-6      of Interference between Stations in Space
                                Rec. ITU-R P.679-3      ant those on the Surface of the Earth
                                Rec. ITU-R P.680-3
                                Rec. ITU-R P.681-6
                                Rec. ITU-R P.682-1
                                Rec. ITU-R P.844-1
                                Rec. ITU-R P.1409-0
tropospheric propagation        Rec.ITUR P. 311-12      Acquisition, presentation and analysis of
                                Rec. ITU-R P.1546-2     data in studies of tropospheric propagation

tropospheric scatter            Rec. ITU-R P.452-12     Prediction procedure for the evaluation of
                                Rec. ITU-R P.617-1      microwave interference between stations on
                                Rec. ITU-R P.1546-2     the surface of the Earth at frequencies
                                                        above about 0.7 GHz*
tropospheric scintillation      Rec.ITUR P. 311-12      Acquisition, presentation and analysis of
                                                        data in studies of tropospheric propagation

true elevation angle            Rec. ITU-R P.1621-1     Propagation data required for the design for
                                                        Earth-space systems operating
types of terrain                Rec. ITU-R P.526-10     Propagation by Diffraction
typified by wide streets        Rec.ITU-R P.1411-3      Propagation data and prediction methods for
                                                        the planning of short-range outdoor
                                                        radiocommunication systems and radio local
                                                        area networks in the frequency range 300
                                                        MHz to 100 GHz
UHF                             Rec. ITU-R P.532-1      Ionospheric Effects and Operational
                                Rec. ITU-R P.844-1      Considerations Associated with the Artificial
                                                        Modification of the Ionosphere and the
                                                        Radio Wave Channel
ultra-wideband (UWB)            Rec.ITU-R P.1791-0      Propagation prediction methods for
                                                        assessment of the impact of ultra- wideband
                                                        devices
unbalanced site diversity       Rec. ITU-R P.618-8      Propagation data and prediction methods
                                                        required for the design of Earth-space
                                                        telecommunication systems
unbalanced-to-unbalanced        Rec. ITU-R P.845-3      HF field strength measurement
isolation transformer
uncorrelated                    Rec. ITU-R P.619-1      Propagation Data required for the Evaluation
                                                        of Interference between Stations in Space
                                                        ant those on the Surface of the Earth

underdense echo ceiling         Rec. ITU-R P.843-1      Communication by Meteor-burst
                                                        Propagation
underdense trails               Rec. ITU-R P.843-1      Communication by Meteor-burst
                                                        Propagation
Uniform theory of diffaction(UTD) Rec. ITU-R P.526-10   Propagation by Diffraction

universal time (UTC)            Rec.ITU-R P. 434-6      ITU-R Reference Ionospheric
                                                        Characteristics and Methods of Basic MUF
                                                        Operational MUF and Ray-path Prediction
uplink                              Rec.   ITU-R   P.618-8    Multipath propagation parametrization of its
                                    Rec.   ITU-R   P.619-1    characteristics
                                    Rec.   ITU-R   P.680-3
                                    Rec.   ITU-R   P.1407-2
upper decile                        Rec.   ITU-R   P.842-3    Computation of reliability and compatibility of
                                                              HF radio systems
urban area                          Rec. ITU-R P.681-6           Method for point-to-area predictions for
                                    Rec. ITU-R P.1546-2         terrestrial services in the frequency range
                                                                            30 MHz to 3 000 MHz
urban canyon                        Rec.ITU-R P.1411-3        Propagation data and prediction methods for
                                                              the planning of short-range outdoor
                                                              radiocommunication systems and radio local
                                                              area networks in the frequency range 300
                                                              MHz to 100 GHz
urban high-rise                     Rec.ITU-R P.1411-3        Propagation data and prediction methods for
                                                              the planning of short-range outdoor
                                                              radiocommunication systems and radio local
                                                              area networks in the frequency range 300
                                                              MHz to 100 GHz
useful burst rate                   Rec. ITU-R P.843-1        Communication by Meteor-burst
                                                              Propagation
UWB transmission channel            Rec.ITU-R P.1791-0        Propagation prediction methods for
                                                              assessment of the impact of ultra- wideband
                                                              devices
vacuum wavelength                   Rec. ITU-R P.1621-1       Propagation data required for the design for
                                                              Earth-space systems operating
variance                            Rec. ITU-R P.452-12       Prediction procedure for the evaluation of
                                                              microwave interference between stations on
                                                              the surface of the Earth at frequencies
                                                              above about 0.7 GHz*
vegetation and building data        Rec.ITUR P. 311-12        Acquisition, presentation and analysis of
                                                              data in studies of tropospheric propagation

vegetation and clutter losses       Rec.ITU-R P.1406-0        Propagation effects relating to terrestrial
                                                              land mobile service in the VHF and UHF
                                                              bands
vegetation fade dynamics            Rec. ITU-R P.833-5        Attenuation in Vegetation
measuread at 38GHz
vehicle entry loss                  Rec. ITU-R P.679-3        Propagation data required for the design of
                                                              broadcasting-satellite systems
velocity aberrations                Rec. ITU-R P.1621-1       Propagation data required for the design for
                                                              Earth-space systems operating
vertical incidence soundings of     Rec.ITU-R P. 434-6        ITU-R Reference Ionospheric
the ionosphere                                                Characteristics and Methods of Basic MUF
                                                              Operational MUF and Ray-path Prediction

vertical polarization               Rec. ITU-R P.372-8        Radio Noise

vertical profile obstacles          Rec.   ITU-R   P.526-10   Propagation by Diffraction
vertical radiation pattern (vrp)    Rec.   ITU-R   P.845-3    HF field strength measurement
vertical refractivity(refractive)   Rec.   ITU-R   P.453-9    The Radio refractive index its formulae and
gradient                            Rec.   ITU-R   P.834-6    refractive data
vertically inhomogeneous          Rec. ITU-R P.684-4       Prediction of field strength at frequencies
anisotropic ionosphere                                     below about 150 kHz
VHF                               Rec.   ITU-R   P.534-4   Method of Calculating sporatic E Field
                                  Rec.   ITU-R   P.843-1   Strength
                                  Rec.   ITU-R   P.844-1
visibility of space station       Rec.   ITU-R   P.834-6   Effects of Tropospheric Refaction on the
                                                           Radiowave Propagation
visible satellites                Rec. ITU-R P.681-6       Propagation data required for the design of
                                                           Earth-space land mobile telecommunication
                                                           systems
VLF                               Rec. ITU-R P.532-1       Ionospheric Effects and Operational
                                  Rec. ITU-R P.684-4       Considerations Associated with the Artificial
                                                           Modification of the Ionosphere and the
                                                           Radio Wave Channel
VLF conductivity maps             Rec. ITU-R P.832-2       World Atlas of Conductivity
voltage deviation                 Rec. ITU-R P.372-8       Radio Noise
wanted signal                     Rec. ITU-R P.842-3       Computation of reliability and compatibility of
                                                           HF radio systems
wanted wave                       Rec. ITU-R P.532-1       Ionospheric Effects and Operational
                                                           Considerations Associated with the Artificial
                                                           Modification of the Ionosphere and the
                                                           Radio Wave Channel
warm seas                         Rec. ITU-R P.620-6       Propagation data required for the evaluation
                                  Rec.ITU-R P.1448-0       of coordination distances in the frequency
                                                           range 100 MHz to 105 GHz
wavefront                         Rec. ITU-R P.1622-0      Prediction methods required for the design
                                                           of Earth-space systems operating between
                                                           20 THz and 375 THz
wave-front incoherence            Rec. ITU-R P.618-8       Propagation data and prediction methods
                                                           required for the design of Earth-space
                                                           telecommunication systems
waveguide mode method             Rec. ITU-R P.684-4       Prediction of field strength at frequencies
                                                           below about 150 kHz
wave-hop treatment                Rec. ITU-R P.684-4       Prediction of field strength at frequencies
                                                           below about 150 kHz
wavelength independent            Rec. ITU-R P.1621-1      Propagation data required for the design for
                                                           Earth-space systems operating
weather-chart (FAX) transmitters Rec. ITU-R P.845-3        HF field strength measurement

weighted average of the sky       Rec. ITU-R P.372-8       Radio Noise
brightness temperature
weighting function                Rec.ITUR P. 311-12       Acquisition, presentation and analysis of
                                                           data in studies of tropospheric propagation

wet term of the surface           Rec. ITU-R P.453-9       The Radio refractive index its formulae and
refractivity                                               refractive data
White Gaussian background         Rec. ITU-R P.372-8       Radio Noise
wideband statistics for mobile-   Rec.ITUR P. 311-12       Acquisition, presentation and analysis of
satellite links                                            data in studies of tropospheric propagation
widebeam receiver               Rec.ITU-R P.1412-0      Propagation data for the evaluation of
                                                        coordination between Earth station in
                                                        working in the bidirectionally allocated
                                                        frequency bands
winter mid- latitude            Rec. ITU-R P.835-4      Reference Standard Atmosphere
World Atlas of Ground           Rec. ITU-R P.832-2      World Atlas of Conductivity
Conductivities
world charts                    Rec. ITU-R P.453-9      The Radio refractive index its formulae and
                                                        refractive data
worst atmosphere layer          Rec. ITU-R P.453-9      The Radio refractive index its formulae and
                                                        refractive data
worst case                      Rec.ITU-R P.1412-0      Propagation data for the evaluation of
                                                        coordination between Earth station in
                                                        working in the bidirectionally allocated
                                                        frequency bands
worst month / worst-month         Rec. ITU-R P.452-12   Prediction procedure for the evaluation of
                                  Rec. ITU-R P.617-1    microwave interference between stations on
                                  Rec. ITU-R P.618-8    the surface of the Earth at frequencies
                                  Rec. ITU-R P.620-6    above about 0.7 GHz*
                                  Rec. ITU-R P.679-3
worst-month cumulative statistics Rec.ITUR P. 311-12    Acquisition, presentation and analysis of
                                                        data in studies of tropospheric propagation

zenith angle                    Rec. ITU-R P.531-8      Ionospheric propagation data and prediction
                                Rec. ITU-R P.1622-0     methods required for the design of
                                                        satellite services and systems
zenith brightness temperature   Rec. ITU-R P.372-8      Radio Noise
zenith paths                    Rec. ITU-R P.1621-1     Propagation data required for the design for
                                                        Earth-space systems operating
3 no entry


3 no entry

3 no entry


3 no entry


3 no entry

2 entries for MUF, but not 2E MUF



3 no entry




3 no entry


3 no entry


2 entry and definition for adjacent
  channel
2 entry and definition for adjacent
  channel

2 entry and definition for adjacent
  channel
3 no entry

3 no entry

3 no entry

3 no entry
2 entry and definition for diversity
  reception

3 no entry




3 no entry

3 no entry
3 no entry


3 no entry


3 no entry


2 entry and definition for field
  strength

2 entry and definition for field
  strength

3 no entry


3 entry for worst month only
3 no entry



3 no entry


3 no entry


1 does not cite this Rec




1 does not cite this Rec
3 no entry


3 no entry
3 no entry
3 no entry

3 no entry

1 definition does cite this Rec

3 no entry

3 no entry


3 no entry
2 entry, but no definition for
  reference atmosphere for
  refraction
3 no entry

3 no entry

3 no entry


3 no entry



3 no entry


3 no entry

3 no entry

3 entry for refractive index--no
  definition

3 no entry


2 entry and definition for attenuation


2 entry and definition for attenuation
1 does not cite this Rec




3 no entry
3 no entry




3 no entry



3 no entry


3 no entry


2 entry for noise temperature with
  definition
3 entry for worst month only
3 no entry

2 entry--no definition



2 entry for azimuth--no definition


3 no entry


3 no entry



3 no entry

3 no entry

3 no entry
3 no entry

3 no entry

3 no entry


3 no entry


1 does not cite this Rec

2 entry and definition for bandwidth

1 definition for circuit reliability--
  does cite this Rec
1 definition for communications
  reliability--does cite this Rec


1 definition for path reliability--does
  cite this Rec
1 definition for reception reliability--
  does cite this Rec
1 definition for reliability--does cite
  this Rec
1 definition for service reliability--
  does cite this Rec
1 does not cite this Rec



3 no entry


3 no entry



3 no entry


3 no entry


3 no entry
3 no entry
3 no entry



1 does not cite this Rec


3 no entry


3 no entry


3 no entry



3 no entry
3 no entry
3 no entry

1 does not cite this Rec




1 does not cite this Rec



2 entry and definition for broadcast
  (sevices) does not cite this Rec

3 no entry

3 no entry


3 no entry
3 no entry
1 does not cite this Rec


2 entry--no definition


3 no entry
3 no entry
3 no entry
3 no entry




1 several entries of terms with
  definitions


3 no entry

3 no entry




3 no entry


3 no entry

1 does not cite this Rec

2 entries, but no definitions for right-
  hand and left-hand circular
  polarization



3 no entry




3 no entry


3 no entry


3 no entry


3 no entry

3 no entry


3 no entry


3 no entry
3 no entry



3 no entry


3 no entry


3 no entry


3 no entry


3 no entry


2 entry and definition for co-channel

3 no entry



2 entry and definition for co-channel

3 no entry

3 no entry


3 no entry


3 no entry



3 no entry



1 does not cite this Rec

1 does not cite this Rec

3 no entry


3 no entry
3 no entry



3 no entry



3 no entry
1 does not cite this Rec


1 does not cite this Rec


2 entry--no definition



3 no entry


3 no entry



3 no entry



3 no entry


3 no entry



2 entry for antenna to medium
  coupling loss--no definition


3 no entry


3 no entry


3 no entry

3 no entry
1 does not cite this Rec


3 no entry


3 no entry



1 does not cite this Rec


2 entry for cross polarization


2 entry--no definition


3 no entry


2 entry--no definition

3 no entry


3 no entry


3 no entry


1 does not cite this Rec


3 no entry

3 no entry



3 no entry


2 entry for field strength
3 no entry




3 no entry




3 no entry


3 no entry

3 no entry
1 does not cite this Rec


3 no entry


3 no entry

3 no entry

3 no entry


3 no entry



3 no entry


1 does not cite this Rec


3 no entry



3 no entry

3 no entry
3 no entry
3 no entry


3 no entry

3 4 entries--all ITU-T no useful
  entries for ITU-R




3 no entry
3 no entry

3 no entry



3 no entry
3 no entry

3 no entry

3 no entry

3 no entry
3 no entry

3 no entry
2 entry for diffuse reflection
  coefficient--no definition

3 no entry


2 entries and definitions for
  quantization
3 no entry
3 no entry

3 no entry

3 no entry
3 no entry


3 no entry

1 ITU-T entry--does not cite this
  Rec
2 several entries for types of
  dispersion--no definitions

3 no entry
3 no entry

2 entry for noise/distortion--no
  definition

3 sveral entries, but none for
  probability distributions--might
  consider a def with a listing the
  more common types of
  distributions
3 no entry



3 no entry

1 several entries of terms with
  definitions


3 no entry


3 no entry


3 no entry

3 no entry

3 no entry

3 no entry


3 no entry
1 3 entries for specific links


3 no entry


3 no entry

3 no entry

3 no entry
1 does not cite this Rec




3 no entry

3 no entry


3 no entry
3 no entry

3 no entry




3 no entry



2 entry for MUF



3 no entry

1 does not cite this Rec


3 no entry
3 no entry



3 no entry


3 no entry
3 no entry


2 ITU-T definitions--no echo
  definition for ITU-R
3 no entry

3 no entry
3 no entry


3 no entry
2 entry,but no definition for
  refractive index
1 does not cite this Rec




2 entry--no definition
3 no entry

1 entry and definition for effective
  transmitting antenna height,does
  not cite this rec
3 no entry

3 no entry

2 2 entries with definitions, does not
  cite this Rec

3 no entry

3 no entry


3 no entry


3 no entry


3 no entry


3 no entry


2 entry and definition for millimetric
  waves

3 no entry

3 no entry
3 no entry

3 no entry
3 no entry
3 no entry

2 2 entries-only the ITU-T entry has
  a definition


3 no entry



3 no entry



2 entry--no definition

3 no entry

1 does not cite this Rec




2 entry and definition for
  Hectomegametric waves


3 no entry
3 no entry


3 no entry

3 no entry
3 no entry

3 no entry

2 all entries are ITU-T no useful
  entries for ITU-R




2 equatorial entries, but just
  equatorial


3 no entry


3 no entry

3 no entry


2 entry for basic transmission loss


3 no entry
1 does not cite this Rec



3 no entry

3 no entry


3 no entry

3 no entry




3 no entry


3 no entry

3 no entry
3 no entry
3 no entry
3 no entry



3 no entry



3 no entry



3 no entry



3 no entry



2 several entries of some fade
  terms--no definitions




3 no entry




3 no entry




3 no entry

3 no entry
3 no entry


3 no entry




1 does not cite this Rec
2 entry--no definition




2 entry and definition for figure of
  merit
3 no entry

3   no entry
3   no entry
3   no entry
3   no entry
1   does not cite this Rec

1 does not cite this Rec




3 no entry



3 no entry


3 no entry

3 no entry



3 no entry
3 no entry


2 2 entries--one with definition


3 no entry

3 no entry

1 entry and definition for free-space
  transmission loss
3 no entry



2 entry--no definition
3 no entry



2 entry and definition for diversity
  reception

3 no entry


2 entry--no definition
3 no entry


3 no entry


3 no entry
3 no entry


3 no entry




3 no entry


3 no entry
3 no entry


3 no entry




3 no entry


3 no entry


3 no entry


3 no entry

3 no entry



3 no entry

3 no entry


3 no entry


3 no entry

3 no entry



3 no entry



3 no entry



3 no entry


3 no entry
2 entry and definition for
  geostationary satellite orbit

2 entry and definition for
  geostationary satellite orbit


1 entry is geostationary satellite--
  does not cite this Rec

3 no entry
3 no entry


3 no entry


3 no entry


3 no entry




3 no entry
3 no entry

3 no entry


3 no entry
3 no entry



1 does not cite this Rec

3 entry for ground-wave only

1 does not cite this Rec


3 no entry


3 no entry
3 no entry
3 no entry


3 no entry



3 no entry

3 no entry


3 no entry

2 entry and definition for
  decametric waves




3 no entry



2 entry--no definition


3 no entry

2 entries for frequency hop and
  ionospheric hop


3 no entry

2 multiple entries for polarization--
  none for horizontal polarization
3 no entry

3 no entry


2 entry--no definition
2 entry--no definition


3 no entry

3 no entry

3 no entry


3 no entry
3 no entry


3 no entry


3 no entry

3 no entry

3 no entry


2 entry--no definition


3 no entry


3 no entry

2 2 entries-one without def. one
  with def.




3 no entry
3 no entry

1 does not cite this Rec
2 entry--no definition
3 no entry



1 does not cite this Rec




2 entry for travelling ionospheric
  disturbance

3 no entry



2 entry for terrain irregularity


3 no entry
3 no entry

3 no entries for isotropic alone




3 no entry
3 no entry


3 no entry
3 no entry
3 no entry
3 no entry



3 no entry


1 does not cite this Rec


3 no entry


3 no entry




3 no entry


3 no entry


2 entry and definition under
  kilometric waves, this rec not
  cited

2 6 ITU-T entries, but nothing
  specifically for Lightning

3 no entry
3 no entry


2 entries for canted linear
  polarization and equatorial linear
  polarization--only defined in
  relation to satellites
3 no entry
1 does not cite this Rec




1 several entries of terms--some
  with definitions
3 no entry


3 no entry


3 no entry


3 no entry


3 no entry


3 no entry


3 no entry


3 no entry


3 no entry


3 no entry



3 no entry


3 no entry

3 no entry



3 no entry

3 no entry


3 no entry


3 no entry
3 no entry

1 does not cite this Rec

3 no entry

3 no entry

1 does not cite this Rec



3 no entry




3 no entry



3 no entry

3 no entry


3 no entry



3 no entry

3 no entry

3 no entry

3 no entry
3 no entry


3 no entry



2 entry for maritime mobile service-
  an ITU-T definition

3 no entry
3 no entry



3 no entry



3 no entry


3 no entry


3 no entry



3 no entry

3 no entry

3 no entry


3 no entry

2 entry--no definition




3 no entry

3 no entry

3 no entry



3 no entry


3 no entry



1 does not cite this Rec
3 no entry


3 no entry


3 no entry

3 no entry

3 no entry

3 no entry
2 entry and definition of hectometric
  waves


3 no entry
1 does not cite this Rec-entry is
  micro cells



3 no entry

3 no entry

3 no entry

3 no entry

3 no entry

2 definition for millimetric waves--
  does not cite this Rec



3 no entry




3 no entry


2 entry for minimum separation
  distance--not applicable in this
  case
3 no entry

3 no entry
3 no entry
3 no entry

3 no entry


3 no entry


2 2 entries with definitions
1 does not cite this Rec


3 no entry

3 no entry

2 entries are ITU-T definitions, not
  appropriate for ITU-R
3 no entry

3 no entry

3 no entry

3 no entry

3 no entry


2 entry and definition for refractive
  index

3 no entry

3 no entry

3 no entry
3 no entry

3 no entry



3 no entry


3 no entry


3 no entry
3 no entry


3 no entry

1 does not cite this Rec




3 no entry


3 no entry


3 no entry
1 definition for multipoint systems--
  does not cite this Rec



3   no entry
3   no entry
3   no entry
3   no entry
3   no entry


3 no entry


3 no entry


3 no entry


3 no entry
3 no entry



3 no entry

3 no entry


1 does not cite this Rec


3 no entry


3 no entry

3 no entry


2 noise alone has an entry but no
  def--some specific noise terms
  with definitions

1 entry is for noise factor--does not
  cite this Rec
2 entry--no definition

3 no entry
3 no entry
2 2 entries--both ITU-T one
  definition might be applicable
3 no entry
3 no entry
3 no entry


3 no entry


3 no entry


3 no entry



3 no entry
2 entry and definition for non-
  geostationary satellite orbit

2 entry and definition for non-
  geostationary satellite orbit

3 no entry


3 no entry


3 no entry
3 no entry



2 several entries--few to no
  definitions


3 no entry
3 no entry

3 no entry
3 no entry

3 no entry



3 no entry
3 no entry

3 no entry



3 no entry


3 no entry
1 does not cite this Rec

3 no entry
3 no entry
2 entry--no definition
3 no entry



3 no entry
1 ITU-T definition-could work for
  ITU-R-does not cite this Rec

3 no entry

3 no entry


3 no entry

3 no entry

2 entry for ITU for overlap--
  definition not useful for this case

3 no entry



3 no entry

3 no entry

3 no entry


3 no entry


3 no entry




3 no entry



3 no entry


1 does not cite this Rec
3 no entry




3 no entry

3 no entry


3 no entry


3 no entry


3 no entry

3 no entry

3 no entry
3 no entry


3 no entry

3 no entry

3 no entry

3 no entry


3 no entry


3 no entry

1 definition for pico cells--does not
  cite this Rec



3 no entry

3 no entry


3 no entry
3 no entry
3 no entry

3 no entry



3 no entry


1 does not cite this Rec




3 no entry
3 no entry

2 entry for polar orbit



3 no entry


3 no entry


2 entry--no definition




2 entry--no definition

3 no entry


3 no entry
1 definition for percipitation scatter
  propagation--does not cite this
  Rec

3 no entry
3 no entry



3 no entry



3 no entry



3 no entry



3 no entry



3 no entry



3 no entry


3 no entry



3 no entry



3 no entry



3 no entry

3 no entry




3 no entry


3 no entry
3 no entry

3 no entry



3 no entry



3 no entry



1 several entries of propagation
  terms--good definitions


3 no entry
3 no entry



3 no entry


3 no entry
3 no entry


3 no entry


3 no entry


3 no entry

3 no entry
3 no entry
3 no entry


3 no entry
3 no entry


3 no entry



3 no entry
3 no entry

3 no entry


3 no entry

3 no entry
3 no entry
3 no entry
3 no entry
2 entry, but no definition for
  refractivity
3 no entry

3 no entry
3 no entry
3 no entry

3 no entry



3 no entry


3 no entry


3 no entry



3 no entry

3 no entry

1 does not cite this Rec

3 no entry


3 no entry


3 no entry

3 no entry

3 no entry
3 no entry



3 no entry


3 no entry


2 multiple entries--no definitions in
  any entry



3 no entry

3 no entry


2 entry,but no definition for
  penetration depth
2 entry for signal-to-noise ratio

3 no entry

3 no entry



3 no entry


3 no entry
3 no entry
3 no entry


3 no entry




3 entry for field strength
3 no entry


1 does not cite this Rec

3 no entry
3 no entry



3 no entry

3 no entry

3 no entry


3 no entry


2 entries for refraction, sub-
  refraction, super refraction, and
  reference atmosphere for
  refraction but none have
  definitions




3 no entry


3 no entry


2 entry--no definition




3 no entry


2 entry--no definition


3 no entry

2 entry, but no definition for
  standard refractivity vertical
  gradient
2 entry, but no definition for
  standard refractivity vertical
  gradient
3 no entry


3 no entry


3 no entry

3 no entry

1 this Rec is cited

3 no entry


3 no entry


3   no entry
3   no entry
3   no entry
3   no entry

3 no entry
3 no entry
3 no entry


3 no entry
3 no entry




2 entry--no definition
3 no entry


2 ITU-T definition for transmission
  route diversity

3 no entry

3 no entry


3 no entry


3 no entry
3 no entry
1 does not cite this Rec


3 no entry

1 entries for ionoshperic and
  tropospheric scatter with
  definitions--does not cite this rec




3 no entry


2 entry--no definition




3 no entry


3 no entry


3 no entry
3 no entry


3 no entry

3 no entry

3 no entry


3 no entry
3 no entry


3 no entry

3 no entry

3 no entry

3 no entry


2 entries for service area, but all
  are associated with a specific
  service(ie. Space station, IMT
  2000)
3 no entry



1 cites this Rec

3 no entry




3 no entry

3 all entries are ITU-T definitions
  and not useful in this case


3 no entry


3 no entry

2 ITU-T definitions only



3 no entry




3 no entry
3 no entry
3 no entry

3 no entry
2 definition in file, but no link to file




3 no entry
3 no entry

1 does not cite this Rec


3 no entry
3 no entry
3 no entry


1 does not cite this Rec
3 no entry


3 no entry


3 no entry




3 no entry



3 no entry

2 definition for noise temperature
  only

3 no entry


3 no entry


3 no entry


3 no entry
3 no entry


3 no entry

3 no entry


3 no entry


3 no entry


3 no entry


3 no entry


3 no entry


3 no entry


3 no entry


3 no entry


3 no entry


3 no entry


3 no entry
3 no entry




2 definition for marco-cell only




3 no entry
2 entry--no definition

3 no entry



3 no entry



3 no entry



3 no entry

3 no entry

3 no entry
1 does not cite this Rec


3 no entry



3 no entry


3 no entry

3 no entry

3 no entry

3 no entry


3 no entry

3 no entry

3 no entry

3 no entry

3 no entry

3 no entry
3 no entry



3 no entry

3 no entry

3 no entry


3 no entry


3 no entry

3 no entry


1 does not cite this Rec


3 no entry
3 no entry

3 no entry


3 no entry


3 no entry


3 no entry


3 no entry




3 no entry


3 no entry
2 entry no definition for sub-
  refraction

3 no entry
3 no entry

3 no entry


3 no entry
3 no entry




2 entry--no definition for super-
  refraction

3 no entry



1 does not cite this Rec
3 no entry

3 no entry


3 no entry


3 no entry

3 no entry


3 no entry


3 no entry
3 no entry


3 no entry

3 no entry


3 no entry


3 no entry
3 no entry



3 no entry


3 no entry


3 no entry


3 no entry


3 no entry


3 no entry


3 no entry
3 no entry

1 does not cite this Rec


3 no entry


3 no entry


3 no entry


3 no entry


3 no entry


3 no entry


3 no entry
3 no entry



3 no entry




3 no entry

3 no entry


3 no entry



3 no entry



3 no entry


3 no entry
3 no entry




3 no entry

1 does not cite this Rec


3 no entry


3 no entry

2 definition for trans-hirizon
  propagation
3 no entry

1 good definition



3 no entry

3 no entry



1 does not cite this Rec


1 good definition



3 no entry




3 no entry


3 no entry


3 definition for TEM


3 definition for TEM


3 no entry

3 no entry



3 not in database-might be good to
  put in pointing to tropospheric
  scattering
1 does not cite this Rec




1 does not cite this Rec


1 does not cite this Rec



3 no entry


2 entry and definition for elevation
  angle
3 no entry
3 no entry




2 definition for decimetric waves



2 entry--no definition


3 no entry


3 no entry

3 no entry



3 no entry

3 no entry

3 no entry

1 does not cite this Rec
1 3 entries for specific links



3 no entry

3 no entry


3 no entry




3 no entry




3 no entry

3 no entry


3 no entry

1 does not cite this Rec



3 no entry


3 no entry


3 no entry

3 no entry

3 no entry

3 no entry



2 multiple entries for polarization--
  none for vertical polarization
3 no entry
3 no entry
1 does not cite this Rec
3 no entry

2 definition for metric waves


3 no entry

3 no entry


2 definition for myriametric waves



3 no entry
3 no entry
2 ITU-T definition

3 no entry



3 no entry


3 no entry


3 no entry


3 no entry

3 no entry

3 no entry

3 no entry

3 no entry

3 no entry


3 no entry

3 no entry
3 no entry
3 no entry



3 no entry
3 no entry

3 no entry

3 no entry

3 no entry



2 entry--no definition




3 no entry


3 no entry


3 no entry
3 no entry

				
DOCUMENT INFO
Categories:
Tags:
Stats:
views:10
posted:11/20/2011
language:English
pages:114