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Altitude estimation using a probability density function

  • US 9,497,593 B2
  • Filed: 08/25/2014
  • Issued: 11/15/2016
  • Est. Priority Date: 06/03/2011
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving, by one or more computers and from a plurality of mobile devices, harvested data about a wireless access gateway, the harvested data including respective locations of the mobile devices recorded by the mobile devices when the respective mobile devices were in communication range of the wireless access gateway, each location being represented using respective latitude and longitude coordinates;

    determining, by the one or more computers, a value of a function, the function weighting a first difference between latitude coordinates of two locations in the harvested data and a second difference between longitude coordinates of two locations in the harvested data; and

    in response to determining that the value exceeds a distance threshold, designating, in determining a location of a mobile device using locations of one or more wireless access gateways, the wireless access gateway as a moving wireless access gateway.

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