Calculating Position

Discussion in 'GPS Technical Discussion' started by Ovaron, Jan 10, 2016.

  1. Ovaron

    Ovaron

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    Hello,
    I have these 4 satellite informations and need to find a way to calculate the receiver postion. Any ideas?

    Satellite Name / NORAD Number / Tx Time (GMT) / Latitude / Longitude / Altitude (km)
    GPS BIIR-3 (PRN 11) / 25933 / 16:02:30.084 / 40.63 / -52.99 / 19808.1
    GPS BIIF-2 (PRN 01) / 37753 / 16:02:30.075 / 27.58 / -54.84 / 20072.3
    GPS BIIF-5 (PRN 30) / 39533 / 16:02:30.063 / 27.01 / -93.49 / 20153.9
    GPS BIIR-5 (PRN 28) / 26407 / 16:02:30.039 / 56.07 / -114.62 / 20715.9
    Assumptions:
    • All four signals reached your GPS receiver simultaneously
    • The waypoint is at sea level
    • The Earth's atmosphere has no effect on the GPS signal
    • The Earth is a perfect sphere, with a radius of 6370 kilometers
    • The speed of light is 3.00E+08 meters per second
    • GPS receiver has no time differential error

    thx
    Ovaron
     
    Ovaron, Jan 10, 2016
    #1
  2. Ovaron

    Nuvi-Nebie Moderator

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    This looks like someone's homework :)
     
    Nuvi-Nebie, Jan 11, 2016
    #2
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