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Method and device for detecting the surface character of objects in road traffic or of persons

  • US 8,432,770 B2
  • Filed: 03/23/2006
  • Issued: 04/30/2013
  • Est. Priority Date: 05/09/2005
  • Status: Expired due to Fees
First Claim
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1. A method for detecting a surface character of an entity in road traffic positioned in front of a vehicle, the method comprising:

  • emitting signals from the vehicle, the emitted signals being transmit pulses that are reflected by the entity to produce echo pulses as reflected signals;

    receiving and evaluating the reflected signals in the vehicle;

    inferring, based on the signal characteristics of the echo pulses, a surface character including a surface roughness of the entity; and

    inferring whether the entity is a person or an object other than a person based on the inferred surface character including the surface roughness.

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