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INFERENCE OF VEHICULAR TRAJECTORY CHARACTERISTICS WITH PERSONAL MOBILE DEVICES

  • US 20140278206A1
  • Filed: 03/15/2013
  • Published: 09/18/2014
  • Est. Priority Date: 03/15/2013
  • Status: Active Grant
First Claim
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1. A method comprising inferring vehicular trajectory characteristics, said inferring comprising:

  • acquiring using a machine-implemented processor data representing a sequence of acceleration-related measurements of a device, the device being in an unknown and changeable orientation relative to the frame of reference of a vehicle in which the device is traveling;

    forming using a machine-implemented processor a plurality of time segments of the acceleration-related data, wherein the orientation of the device relative to the vehicle when acquiring the data differs between at least some of the time segments;

    for each time segment of a plurality of time segments, using a machine-implemented processor,determining data characterizing an orientation of the device relative to a frame of reference of the vehicle during that time segment,forming motion-related data in the frame of reference of the vehicle during the time segment, anddetermining data characterizing trajectory characteristics of the vehicle in the time segment; and

    storing data characterizing trajectory characteristic of the vehicle determined from the data characterizing the trajectory characteristics in multiple of the time segments.

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