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Method and apparatus for monitoring the integrity of satellite tracking data used by a remote receiver

  • US 7,589,667 B2
  • Filed: 11/30/2005
  • Issued: 09/15/2009
  • Est. Priority Date: 11/13/2003
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving at a server a first ephemeris, wherein the first ephemeris includes data for at least one satellite in a constellation of satellites;

    using the first ephemeris to produce integrity data for validating a second ephemeris residing at a remote receiver; and

    transmitting to the remote receiver the integrity data.

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