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Methods and apparatus for geometry extra-redundant almost fixed solutions

  • US 7,768,451 B2
  • Filed: 07/23/2007
  • Issued: 08/03/2010
  • Est. Priority Date: 07/23/2007
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • combining almost fixed solutions with a correctly fixed solution to form an extended pull-in region (EPIR) so that a probability of almost fixed (PAF) over the EPIR meets an integrity allocation; and

    computing, using a processor, protection levels for providing a relative GPS navigation solution including effects of incorrect fixes associated with the almost fixed solutions in the EPIR.

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