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Method and system for detecting an object with a radio wave

  • US 4,706,031 A
  • Filed: 04/01/1985
  • Issued: 11/10/1987
  • Est. Priority Date: 03/30/1984
  • Status: Expired due to Fees
First Claim
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1. A method of detecting of detecting location, shape and material of an object, comprising the steps of:

  • radiating a radio wave toward an object;

    receiving an echo wave of said radio wave reflected from said object to detect an intensity of said echo wave;

    comparing a phase of the radiated radio wave with that of said echo wave to detect a phase difference between said radiated wave and said echo wave; and

    displaying on a display unit the location and shape of the object on the basis of the intensity of said echo wave and displaying on said display unit the material of said object on the basis of said phase difference between said radiated wave and said echo wave.

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