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Method of detecting and classifying objects by means of radar

  • US 6,222,481 B1
  • Filed: 01/05/1999
  • Issued: 04/24/2001
  • Est. Priority Date: 07/05/1996
  • Status: Expired due to Fees
First Claim
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1. An essentially aspect independent method of detecting and classifying known and unknown targets using radar, comprising the steps of:

  • transmitting a wideband radar signal that includes wavelengths which coincide with characteristic overall lengths of targets to be detected and classified so as to obtain target signature information having limited aspect dependence;

    receiving the radar signal as a returned signal;

    detecting and determining characteristic frequencies in the returned signal as well as mutual time relations of said characteristic frequencies;

    storing a plurality of values for characteristic frequencies and corresponding mutual time relations for a plurality of known targets in an analyzer; and

    analyzing the characteristic frequencies and mutual time relations in the returned signal by comparing the returned signal characteristic frequencies and mutual time relations with the stored characteristic frequencies and mutual time relations values of known targets to identify the unknown target.

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