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Method for measuring lateral movements in a driver assistance system

  • US 8,112,223 B2
  • Filed: 12/02/2008
  • Issued: 02/07/2012
  • Est. Priority Date: 12/04/2007
  • Status: Active Grant
First Claim
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1. A method for determining a dynamic variable representative of a lateral movement of a located object in a driver assistance system of a motor vehicle, the method comprising:

  • locating the object using two angle-resolving distance sensors situated laterally offset with respect to one another;

    measuring radial components of a relative velocity of the object along particular lines of sight using the two distance sensors; and

    determining the dynamic variable on the basis of the measured radial components;

    wherein;

    a distinction is made between substantially punctiform objects and extended objects on the basis of azimuth angles measured by the two distance sensors, and the method for determining the dynamic variable is selected as a function of an object type; and

    for substantially punctiform objects, a lateral velocity of the object is calculated, under an assumption that both distance sensors are locating a same reflection point on the object, from the azimuth angles of the reflection point measured by the distance sensors and the measured radial components.

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