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Method of keeping a GPS receiver in a state that enables rapid signal acquisition

  • US 8,823,587 B2
  • Filed: 06/30/2011
  • Issued: 09/02/2014
  • Est. Priority Date: 11/13/2008
  • Status: Active Grant
First Claim
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1. A method for satellite navigation, comprising:

  • acquiring, by a communication device, broadcast ephemeris from a satellite signal during a data refresh operation;

    computing, by the communication device, extended ephemeris from the acquired broadcast ephemeris during the data refresh operation;

    determining, by the communication device, satellite navigation information from the computed extended ephemeris during a positioning operation that is different from the data refresh operation and subsequent to the data refresh operation; and

    dynamically modifying, by the communication device, a time associated with a schedule of the data refresh operation based on the computed extended ephemeris.

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