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Method And Apparatus Of Updating Vehicle Position And Orientation

  • US 20090063051A1
  • Filed: 08/12/2008
  • Published: 03/05/2009
  • Est. Priority Date: 08/30/2007
  • Status: Abandoned Application
First Claim
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1. A method of updating the position and orientation of a vehicle at startup of a navigation system using both a GPS receiver and a dead reckoning sensor, the method comprising:

  • storing the vehicle position and orientation when the navigation system is inoperative and setting the stored vehicle position and orientation as the initial vehicle position and orientation when the navigation system is operative;

    estimating a vehicle position and orientation by using a signal output from the dead reckoning sensor and the initial vehicle position and orientation after the navigation system becomes operative;

    determining whether the reliability of a GPS orientation obtained by the GPS receiver becomes sufficiently high after the navigation system becomes operative; and

    updating the current vehicle position by using the GPS orientation and the estimated vehicle position when the reliability of the GPS orientation obtained by the GPS receiver becomes sufficiently high.

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