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Method and apparatus for determining time in a satellite positioning system

  • US 6,839,021 B2
  • Filed: 06/13/2003
  • Issued: 01/04/2005
  • Est. Priority Date: 02/03/1997
  • Status: Expired due to Term
First Claim
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1. A method for determining a reference time associated with a satellite positioning system, said method comprising:

  • estimating a position of an entity relative to a set of satellites, said estimation being associated with a first time measurement, wherein said first time measurement and said reference time differ by an offset;

    determining a relative velocity of said set of satellites; and

    based on said relative velocity of said set of satellites and said estimated position, determining said offset between said first time measurement and said reference time.

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