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Wideband RF detection

  • US 8,194,250 B2
  • Filed: 05/30/2008
  • Issued: 06/05/2012
  • Est. Priority Date: 05/30/2008
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • transmitting a signal from a plurality of transmit positions along a drive path;

    receiving reflections of the transmitted signal at a plurality of receive positions along the drive path;

    forming a signature of a structure based on arrival angles of the reflections at each of the receive positions;

    inferring an interior of the structure based on the signal; and

    comparing the signature to other signatures to detect internal changes within the structure.

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