Patent ID: 6360165
Filing Date: 2002-03-19
Classification: G01C

Abstract:
A method for navigating a vehicle comprising the acts of:obtaining during a first time interval an odometer indication signal indicative of a distance traveled by the vehicle, a slip indication signal indicative of the slip of the vehicle, and a heading indication signal indicative of the heading of the vehicle; converting the odometer indication signal to a first distance estimate; determining a position of the vehicle based on a known prior position, the first distance estimate obtained during said act of converting and the heading of the vehicle indications of which are obtained during said first act of obtaining; obtaining during the first time interval an external distance estimate for the vehicle from a radio navigation system; determining whether the external distance estimate includes indicia of reliability; and adjusting an odometer conversion parameter utilized in said act of converting if the external distance estimate includes indicia of reliability as determined in said second act of determining.