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Location estimation using radio scene signatures

  • US 9,194,934 B2
  • Filed: 03/09/2012
  • Issued: 11/24/2015
  • Est. Priority Date: 03/09/2012
  • Status: Active Grant
First Claim
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1. A method of estimating a location of a portable electronic device, the method comprising:

  • accessing a query signature vector of a radio scene identifying radio frequency transmitters and associated signal strengths detected at the portable electronic device, the query signature vector representing data from a high-dimensional space in a low-dimensional vector;

    identifying one or more radio scene signature vectors based on a similarity with the query signature vector, each of the identified one or more radio scene signature vectors having an associated location, the one or more radio scene signature vectors representing data from the high-dimensional space in a respective low-dimensional vector; and

    estimating the location of the portable electronic device based on the associated locations of the identified one or more signatures.

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