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METHOD AND SYSTEM FOR NAVIGATION USING GPS VELOCITY VECTOR

  • US 20080262728A1
  • Filed: 04/18/2007
  • Published: 10/23/2008
  • Est. Priority Date: 04/18/2007
  • Status: Active Grant
First Claim
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1. A vehicle navigation device includes a computer platform comprising:

  • a global positioning system (GPS) receiver operable to acquire and track a GPS signal;

    a processor assembly; and

    a memory, wherein the memory includes;

    last recorded GPS information comprising at least one of Ephemeris information and Almanac information; and

    a GPS velocity vector determination module operable to output a velocity vector in the absence of current Ephemeris based upon the tracked GPS signal and the last recorded GPS information.

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