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Method for positioning using GPS in a restrictive coverage environment

  • US 20060012516A1
  • Filed: 07/13/2005
  • Published: 01/19/2006
  • Est. Priority Date: 07/15/2004
  • Status: Active Grant
First Claim
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1. A GPS system including:

  • a base GPS receiver with an antenna that has a clear view of the sky;

    one or more remote GPS receivers;

    a data processing subsystem that collects range data from the base and remote GPS receivers over a plurality of hours and calculates the positions of the respective GPS receivers, the data processing center batch processing the data received from the respective remote receivers in multiple passes through the data using floating ambiguity filters that after the first pass are initialized with estimated positions that have been previously calculated.

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