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Method and apparatus for detecting objects

  • US 6,133,826 A
  • Filed: 12/07/1999
  • Issued: 10/17/2000
  • Est. Priority Date: 12/07/1999
  • Status: Expired due to Term
First Claim
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1. A method of detecting objects within a detection field, the detection filed extending above a ground plane and from a surface of a motor vehicle, the method comprising the steps of:

  • dividing the detection field into a first sub-field and a second sub-field;

    illuminating the first sub-field with a first energy emission;

    receiving during a first receiver enable period, an energy return as a result of the first energy emission;

    determining a presence of an object in the first sub-field by detecting a primary energy return or a second energy return;

    illuminating the second sub-field with a second energy emission different than the first energy emission;

    receiving during a second receiver enable period, an energy return as a result of the second energy emission; and

    determining a presence of an object in the second sub-field.

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