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Vehicle-based positioning system and method of using the same

  • US 8,989,985 B2
  • Filed: 08/14/2013
  • Issued: 03/24/2015
  • Est. Priority Date: 08/14/2013
  • Status: Active Grant
First Claim
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1. A vehicle-based positioning system (VBPS) for a vehicle traversing a guideway, the VBPS comprising:

  • an inertial navigation system (INS) on-board the vehicle, wherein the INS is configured to detect one or more inertial parameters of the vehicle while the vehicle traverses the guideway, the detected inertial parameters including roll, pitch and yaw of the vehicle;

    a guideway database, wherein the guideway database is configured to store inertial parameters of the guideway corresponding to a plurality of locations along the guideway, the stored inertial parameters including roll, pitch and yaw of the guideway; and

    a vital on-board controller (VOBC), the VOBC is configured to determine a position of the vehicle based on a comparison of the detected inertial parameters with the stored inertial parameters,wherein the VOBC is configured to limit comparison of the inertial parameters with the stored inertial parameters based on a latest checkpoint passed by the vehicle.

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