×

GPS-based in-vehicle sensor calibration algorithm

  • US 7,957,897 B2
  • Filed: 06/29/2007
  • Issued: 06/07/2011
  • Est. Priority Date: 06/29/2007
  • Status: Active Grant
First Claim
Patent Images

1. A system for determining the heading of a vehicle, said system comprising:

  • a GPS receiver providing GPS signals indicating the position of the vehicle;

    a yaw-rate sensor for providing yaw-rate signals indicating the yaw-rate of the vehicle;

    an acceleration estimation processor for determining the acceleration of the vehicle and providing acceleration signals;

    a GPS validation processor receiving the GPS signals, wheel speed or rotation signals and the acceleration signals, and determining whether the GPS signals are valid; and

    a bias and scale calibration processor responsive to the yaw-rate sensor signals and the GPS signals, said calibration processor providing bias and scale calibration factors for the yaw-rate sensor signals using the GPS signals if the validation processor determines that the GPS signals are valid.

View all claims
  • 12 Assignments
Timeline View
Assignment View
    ×
    ×