Method and apparatus for time-free processing of GPS signals

CAFC
  • US 6,417,801 B1
  • Filed: 11/17/2000
  • Issued: 07/09/2002
  • Est. Priority Date: 11/17/2000
  • Status: Expired due to Term
First Claim
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1. A method for calculating an absolute position of a GPS receiver and an absolute time of reception of satellite signals comprising:

  • providing pseudoranges that estimate the range of the GPS receiver to a plurality of GPS satellites;

    providing an estimate of an absolute time of reception of a plurality of satellite signals;

    providing an estimate of a position of the GPS receiver;

    providing satellite ephemeris data;

    computing absolute position and absolute time using said pseudoranges by updating said estimate of an absolute time and the estimate of position of the GPS receiver.

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