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Object detection method and apparatus

  • US 20080284636A1
  • Filed: 03/07/2008
  • Published: 11/20/2008
  • Est. Priority Date: 03/07/2007
  • Status: Abandoned Application
First Claim
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1. A method for detecting an object concealed on a target, the method comprising the steps of:

  • a first unit generating a first electromagnetic radiation transmission comprising selected frequencies within a frequency range;

    transferring the first transmission to a second unit;

    the second unit transmitting the first transmission to the target;

    the first unit receiving first and second orthogonally polarized signals reflected from the target at each selected frequency;

    measuring the amplitude and phase of the reflected signals;

    generating a frequency domain waveform;

    transforming the waveform to a time domain in a time window corresponding to a distance to the target; and

    processing the time domain waveform without forming an image of the object to determine whether an object is concealed on the target.

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