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Vehicle determination system and method using a kalman filter and critical milepost data

  • US 9,606,240 B2
  • Filed: 11/27/2007
  • Issued: 03/28/2017
  • Est. Priority Date: 11/27/2007
  • Status: Active Grant
First Claim
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1. A vehicle location determination system (LDS) comprising:

  • a computer or processor;

    a speed bias based speed integration module;

    a Kalman filter based estimator, wherein the computer or processor is programmed to estimate real time location of the vehicle along a route via the Kalman filter based estimator that estimates the real time location in response solely to both GPS information and vehicle speed information; and

    a critical milepost module comprising a database of identifying entries that are distinct and independent from the GPS information and the vehicle speed information, wherein the computer or processor is further programmed to reset the speed bias based integration module based upon the identifying entries in the database such that the estimated real time location is robust to cumulative errors and disturbances associated with both the GPS information and vehicle speed information to ensure the estimated real time location information is accurate.

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