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PEEP-HOLE

VIEWS: 18 PAGES: 19

									                                  PEEP-
                                  PEEP-HOLE
                 A constellation of small Earth
               Observation satellites aiming at new
                  applications and customers

                                   Fernando González (ISAE-SUPAERO – Defense Systems Engineer)
                                                      Fernando.gonzalez@isae.fr

                                                     Daniel J. Hernandez (Devil-Hop SME)
                                                       Danieljean.hernandez@orange.fr



International Conference – Data Flow: From Space to Earth – Applications and Interoperability   March 22nd, 2011   1
PEEP-
PEEP-HOLE

 PHASE 0
                                         j
                            PEEP-HOLE: Objectives



         Design a constellation to minimize
         waiting time between two images
         in a given zone relative to the
         overall cost of the mission

         Capability to command the LOS
         by users




International Conference – Data Flow: From Space to Earth – Applications and Interoperability   March 22nd, 2011   3
                                     Markets Study (1)



           Higher value images
                 Recent product
                 High resolution


           Conventional markets + Innovative markets
                 Real Time Accessibility
                 Command of the Line of Sight (TubSat…)




International Conference – Data Flow: From Space to Earth – Applications and Interoperability   March 22nd, 2011   4
                                   Markets Study (2)




                    (Source: eoPortal)                                        (Source: EADS Astrium)

International Conference – Data Flow: From Space to Earth – Applications and Interoperability   March 22nd, 2011
                           Resolution Evolution for
                          SPOT              f
                          S O and Landsat families




International Conference – Data Flow: From Space to Earth – Applications and Interoperability   March 22nd, 2011   6
                                  PEEP-HOLE Design



           Korsch Telescope (GSD 2m)
           S aps o / deo ages (Color)
           Snapshot/video images (Co o )
           Mass 200 + kg and Volume < 1m3
           X-Band @ 100 + Mb/s (Data) and S-Band (TT&C + LOS
           command)
           Nominal 3 axis AOCS (RW, Star Tracker, Magnetometer….)
           Propulsion: 15kg. hydrazine (4 thrusters)
           S l generator ( 2 2)
           Solar        t (~ 2m



International Conference – Data Flow: From Space to Earth – Applications and Interoperability   March 22nd, 2011   7
                             Constellation Trade-Off


           To minimize the waiting time between two images without
           impacting negatively on the Return-On-Investment (ROI)

           Preliminary Design Approach
                 Altitude: ~1200 km
                 4 planes inclined @ ~50 °
                                           launch
                 2 satellites per plane (1 la nch per plane)
                 Body pointing capability ±45°


           Current O ti i ti study t t k into
           C     t Optimization t d to take i t
           account risk of satellites failures


International Conference – Data Flow: From Space to Earth – Applications and Interoperability   March 22nd, 2011   9
    PEEP-
    PEEP-HOLE

         FLOW:
    DATA FLOW
A PRELIMINARY ANALYSIS
                          Space Segment: COMMS


                                                  COTS Technology
                                                  Fulfilling Real Time Data Transfer of
                                                  Pictures at 100 Mbps
                                                  Minimizing power consumption




         Boeing: XPAA                                          SSTL: Transmitter
International Conference – Data Flow: From Space to Earth – Applications and Interoperability   March 22nd, 2011
                                       Data Handling
                                    Processing & Coding

           Based on the Consultative Committee for Space Data
           Systems (CCSDS) Recommendation for image data
           compression: based on JPEG2000
                  640 Mbps                64 Mbps




From raw data of telescope                                                                       To transmitter




International Conference – Data Flow: From Space to Earth – Applications and Interoperability   March 22nd, 2011
                                       Imagery Operations


           Operate in Real Time (Low or High resolution mode)
           Access to Archives




International Conference – Data Flow: From Space to Earth – Applications and Interoperability   March 22nd, 2011
                                                g
                                       Ground Segment


           Use of station network to
                 Pilot the Line of Sight
                 Monitor satellites health
                 Receive images in real time



           Mission command centre to help/monitor users and maintain the
           constellation in good operation conditions

           PEEP-HOLE center can provide user assistance
           (cloud coverage, compression…)

International Conference – Data Flow: From Space to Earth – Applications and Interoperability   March 22nd, 2011
                                                                                                                   15
PEEP-
PEEP-HOLE

CONCLUSIONS
                                           Conclusion


          Preliminary studies are done by Devil-Hop and ISAE
          (Phase 0)

          Further needed studies will be conducted

          Update of the PEEP-HOLE definition and status will be
          provided through several conferences and other
          p             g
          medias

          Partners are welcomed
International Conference – Data Flow: From Space to Earth – Applications and Interoperability   March 22nd, 2011   17
            Thank you for your attention




 24 Janvier 2011
International Conference – Data Flow: From Space to Earth – Applications and Interoperability   March 22nd, 2011
                                                   Questions?




International Conference – Data Flow: From Space to Earth – Applications and Interoperability   March 22nd, 2011 19

								
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