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System and/or method for determining sufficiency of pseudorange measurements

  • US 7,656,348 B2
  • Filed: 08/24/2006
  • Issued: 02/02/2010
  • Est. Priority Date: 05/19/2006
  • Status: Active Grant
First Claim
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1. A method comprising:

  • determining quantitative assessments of accuracy associated with a plurality of pseudorange measurements to space vehicles (SVs) at a location, wherein the plurality of pseudorange measurements are determined at a satellite positioning system (SPS) receiver;

    weighting at least some of said quantitative assessments according to geometries associated with said SVs to generate weighted quantitative assessments;

    determining a location accuracy metric based on the weighted quantitative assessments; and

    selectively performing a SV signal search process in the SPS receiver to improve said accuracy of said plurality of said pseudorange measurements based in part on the location accuracy metric.

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