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Use of a device in a vehicle, using which the environment of the vehicle can be identified by means of radar beams

  • US 6,300,896 B1
  • Filed: 12/17/1999
  • Issued: 10/09/2001
  • Est. Priority Date: 12/17/1998
  • Status: Expired due to Fees
First Claim
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1. A method for correcting a signal representing speed of a vehicle comprising the steps of:

  • (1) deriving a signal from vehicle wheel rotation speed signals, the signal representing speed of the vehicle;

    (2) identifying an environment of the vehicle by means of radar beams wherein objects in the environment are distinguished and characterized as moving or stationary, where an object is characterized as being stationary when its relative speed with respect to the vehicle differs by not more than a specific amount from the vehicle speed derived from the wheel rotation signals, said specific amount being defined as a function of the vehicle speed in such a manner that the specific amount increases as the vehicle speed increases; and

    (3) generating a correction of the vehicle speed signal as a function of speed at which the objects characterized as stationary, move relative to the vehicle.

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