Systems and methods for determining position using a WLAN-PS estimated position as an initial position in a hybrid positioning system

  • US 8,054,219 B2
  • Filed: 06/05/2009
  • Issued: 11/08/2011
  • Est. Priority Date: 06/06/2008
  • Status: Active Grant
First Claim
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1. A method of determining the position of a WLAN and satellite enabled device by using a WLAN position estimate as an initial location for a satellite positioning system, the method comprising:

  • receiving signals from one or more WLAN access points within range of the WLAN and satellite enabled device;

    determining at least one WLAN position estimate of the WLAN and satellite enabled device and at least one corresponding uncertainty estimate based on the signals received from the one or more WLAN access points; and

    using the at least one WLAN position estimate the WLAN and satellite enabled device as an initial position for use by the satellite positioning system and the at least one corresponding uncertainty estimate to determine a final position estimate of the WLAN and satellite enabled device.

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