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Location determination with geographic and bias tuning

  • US 7,986,953 B2
  • Filed: 06/01/2009
  • Issued: 07/26/2011
  • Est. Priority Date: 06/01/2009
  • Status: Active Grant
First Claim
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1. A method for determining location of an observer device, comprising:

  • receiving basestation distance data for the observer device, the basestation distance data including identification of one or more basestations and information indicating a distance between the observer device and each of the one or more basestations;

    applying a location algorithm to the basestation distance data to calculate a computed location of the observer device;

    determining whether the basestation distance data correlates to any of a plurality of observer device conditions; and

    if the basestation distance data correlates with one of the plurality of observer device conditions, correcting the computed location with a location bias that is associated with said one of the plurality of observer device conditions, in order to provide a corrected location of the observer device.

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