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Method and apparatus for estimating satellite positioning reliability

  • US 9,031,572 B2
  • Filed: 12/20/2011
  • Issued: 05/12/2015
  • Est. Priority Date: 12/22/2010
  • Status: Active Grant
First Claim
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1. A machine implemented method for determining a metric for a position fix solution of a mobile device, comprising:

  • obtaining a plurality of first data items at the mobile device, the plurality of first data items comprising at least one external position injection (EPI) data item and at least one reliability indicator for the at least one EPI data item, the at least one reliability indicator indicating one or more predefined states of reliability;

    computing the position fix solution of the mobile device based, at least in part, on the plurality of first data items; and

    determining a metric indicative of a reliability of the computed position fix solution based, at least in part, on the at least one reliability indicator for the at least one EPI data item and on an input number of degrees-of-freedom of the plurality of first data items.

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