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Method and device for target tracking of land vehicles

  • US 4,633,407 A
  • Filed: 05/14/1984
  • Issued: 12/30/1986
  • Est. Priority Date: 11/06/1982
  • Status: Expired due to Term
First Claim
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1. A method of tracking position of a land vehicle by means of a planimetric dead reckoning navigation whereby the travel path and the travel direction are ascertained by detecting and evaluating information about rotations of two wheels on a vehicle axis, comprising the steps of preparing for a particular type of the vehicle a set of correction factors, selecting a corresponding correction factor based on the sum of rotations of one of said two wheels, the difference between the rotations of said two wheels, and the time required for detecting and evaluating said rotations;

  • and defining an actual travel direction of said vehicle by correcting the ascertained travel direction by said corresponding correction factor.

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