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MOVING-ENTITY DETECTION

  • US 20090262006A1
  • Filed: 02/24/2009
  • Published: 10/22/2009
  • Est. Priority Date: 04/14/2005
  • Status: Active Grant
First Claim
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1. A method for detecting entities based on movement, the method comprising:

  • transmitting a stepped-frequency radar signal from a first side of a wall to a second side of the wall;

    detecting reflections of the transmitted signal with an antenna while the antenna is in motion;

    determining one or more characteristics of motion of a system which includes the antenna during the detection of reflections of the transmitted signal;

    generating data including information associated with frequency and phase shifts between the transmitted signal and the reflections of the transmitted signal detected with the antenna while the antenna is in motion; and

    analyzing the generated data to determine information associated with a moving object located beyond the second side of the wall, the analyzing including using the determined one or more characteristics of the motion of the system to compensate for the effect of the motion of the system on the phase shifts between the transmitted signal and the reflections of the transmitted signal.

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