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SYSTEM AND METHOD FOR ESTIMATING THE POSITION AND ORIENTATION OF A MOBILE COMMUNICATIONS DEVICE IN A BEACON-BASED POSITIONING SYSTEM

  • US 20160195604A1
  • Filed: 03/10/2016
  • Published: 07/07/2016
  • Est. Priority Date: 08/12/2014
  • Status: Active Grant
First Claim
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1. A method, comprising steps of:

  • capturing, via an image sensor of a mobile device, one or more images including at least one signal modulated within visible light, wherein;

    the visible light is transmitted from a plurality of visible light sources located within a space;

    any one signal is modulated within visible light transmitted by a respective one visible light source; and

    each modulated signal corresponds to a respective identity of a respective visible light source;

    processing the one or more images to determine, based at least in part on the at least one modulated signal, an estimated location of the mobile device within the space;

    capturing, via a compass of the mobile device, a raw heading measurement;

    obtaining a corrected heading estimate based at least in part on the raw heading measurement;

    determining a likely orientation of the mobile device relative to a map of the space;

    comparing the corrected heading estimate and the likely orientation of the mobile device relative to the map of the space to obtain an apparent deviation; and

    recording the apparent deviation in association with the estimated location of the mobile device.

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