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Radar detection method and apparatus

  • US 6,577,269 B2
  • Filed: 08/16/2001
  • Issued: 06/10/2003
  • Est. Priority Date: 08/16/2000
  • Status: Expired due to Term
First Claim
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1. A method for detecting an object with a radar system comprising:

  • transmitting a transmit signal;

    receiving a receive signal generated by at least a portion of the transmit signal impinging the object;

    calculating a difference signal in response to the transmit signal and the receive signal;

    performing an FFT on the difference signal to provide an FFT output signal;

    computing a derivative of the FFT output signal; and

    detecting the object in response to a zero crossing of the derivative of the FFT output signal.

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