Resolving time ambiguity in GPS using over-determined navigation solution

  • US 6,618,670 B1
  • Filed: 09/14/2001
  • Issued: 09/09/2003
  • Est. Priority Date: 09/15/2000
  • Status: Active Grant
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First Claim
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1. A method for resolving a variable ambiguity in a global positioning system receiver, comprising:

  • determining a plurality of pseudoranges to a plurality of Global Positioning System satellites;

    an error range for each of the pseudoranges, wherein the error range gives a maximum and a minimum for each of the pseudoranges; and

    minimizing a distance from a predetermined estimate of user position to the maximum and minimum for the plurality of pseudoranges.

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