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Signal verification

  • US 9,140,561 B2
  • Filed: 12/13/2013
  • Issued: 09/22/2015
  • Est. Priority Date: 09/20/2010
  • Status: Active Grant
First Claim
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1. A global navigation satellite system comprising a receiver configured to:

  • receive an indication of a validity of orbit data of a satellite determined from a comparison of a modeled position of the satellite to a time-calculation-based position; and

    determine a validity of positional information associated with the orbit data when the received indication shows that the modeled position of the satellite is substantially identical to the time-calculation-based position.

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