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Automotive radar device

  • US 7,486,222 B2
  • Filed: 04/07/2006
  • Issued: 02/03/2009
  • Est. Priority Date: 10/14/2005
  • Status: Active Grant
First Claim
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1. An automotive radar device having a radio-type radar housed in a vehicle-side radome installed on a vehicle, the radio-type radar including a transmitting unit and a receiving unit, the automotive radar device sending and receiving radio waves from the radar through the vehicle-side radome, in a sending and receiving direction, and measuring distance and relative velocity with respect to a subject, the automotive radar device comprising:

  • a guiding unit that is arranged between the vehicle-side radome and the radar and that guides a reflected wave, without modulation thereof, from adhering matter on a surface of the vehicle-side radome to the receiving unit of the radar; and

    an adhering matter judging unit that judges the existence/non-existence of the adhering matter on the surface of the vehicle-side radome on the basis of the signal level of the reflected wave received by the receiving unit,wherein the guiding unit guides a reflected wave reflected in only a specific beam direction to the receiving unit, andwherein the adhering matter judging unit judges the existence/non-existence of adhering matter on the surface of the vehicle-side radome on the basis of the signal level of the reflected wave in the specific beam direction and in another beam direction.

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