Latitude - Excel by e295e75ae2526297

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									Graphics from Charlie Leonard (Boise Interagency Dispatch Center, Boise Id.) powerpoint presentation (INTROGPS
Used without permission




                                                                                    10º

                           20º N

                           10º N                                          10º 690 miles

                            0º N                                          10º 690 miles

                          10º S                                           10º 690 miles
powerpoint presentation (INTROGPS).




         10º




           690 miles

           690 miles

           690 miles
      Graphics from Charlie Leonard (Boise Interage
      Used without permission




10º
                             240 mi

                          460 miles

                            690 miles




        120º W
from Charlie Leonard (Boise Interagency Dispatch Center, Boise Id.) powerpoint presentation (INTROGPS).
out permission




                10º
              240 mi
              10º
           460 miles

              10º
            690 miles




0º W                               110º W
Cheatsheet for GPS implication of position
                                                                                                                                                   WORK IN PROGRESS:
                                                                                                    Necessary Conversions                          Use at your own discretion.
                                                                                                                                                   Worksheet: Some interesting conversions and stats.
                                                                                                    1 Nautical Mile = 6076.12 feet                   6076.12
                                                                                                                                                   Enter your Latitude and see what the coordinates
                                                                                                    1 Nautical Mile = 1852 meters                       1852
                                                                                                                                                   imply in terms of "on ground distance"
Formulas and Examples
LATITUDE - No matter where you are on the planet, these distances apply!
One Degree of Latitude = 60 Nautical Mile = 364,567.2 feet = 111,120 meters
One Minute of Latitude = 1 Nautical Mile = 6076.12 feet = 1852 meters
One Second of Latitude = 0.016666 Nautical Miles = 101.27 feet = 30.87meters

LONGITUDE - the "on earth" distance of a unit of Longitude along a parallel depends on the latitude of that parallel
One Degree of Longitude corresponds to 111,120 meters multiplied by the cosine of the latitude      For Anchorage at 62 degrees N latitude this corresponds to 111,120*(cos(62)) = 52167.68 meters
One minute of Longitude corresponds to 1852 meters multiplied by the cosine of the latitude         For Anchorage at 62 degrees N latitude this corresponds to 1852*(cos(62)) = 869.46 meters
One second of Longitude corresponds to 30.86666 meters multiplied by the cosine of the latitude     For Anchorage at 62 degrees N latitude this corresponds to 30.866*(cos(62)) = 14.49 meters




                                                                                                                                                                 Meters
Therefore a Screen reading on a PLGR carried out to 1 hundredth of a second for Longitude(eg. 149 23 43.33) =                                                         0.13 In East West
Therefore a Screen reading on a PLGR carried out to 1 hundredth of a second for Latitude(eg. 62 23 12.33) =                                                           0.31 In North South

                                                                                       In Meters
A PLGR screen reading out to 7 decimal places(Longitude) =                                  0.005   In East West
A PLGR screen reading out to 7 decimal places(Latitude) =                                   0.011   In North South
A GPS screen reading out to 5 decimal places(Longitude) =                                   0.470   In East West
A GPS screen reading out to 5 decimal places(Latitude) =                                    1.111   In North South
Enter your Latitude as a Degree here=>                                         65
Longitude                                                           In Meters     In Feet           Latitude
A degree of Longitude in your area implies=>>                           46961.34 154072.65          A degree of Latitude in your area implies=>>
A Minute of Longitude in your area implies=>>                              782.69    2567.88        A Minute of Latitude in your area implies=>>
A Second of Longitude in your area implies=>>                               13.04      42.80        A Second of Latitude in your area implies=>>
ns and stats.
ordinates




     NorthSouth

     In Meters In Feet
       111120.00 33869.37
         1852.00   564.49
           30.87     9.41

								
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