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SYSTEM AND METHOD FOR SENSING DISTANCE AND/OR MOVEMENT

  • US 20120212366A1
  • Filed: 02/20/2012
  • Published: 08/23/2012
  • Est. Priority Date: 02/21/2011
  • Status: Active Grant
First Claim
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1. A method comprising:

  • transmitting an electromagnetic first transmitted signal from a transmitting antenna toward a target object that is a separated from the transmitting antenna by a separation distance, the first transmitted signal including a first transmit pattern representative of a first sequence of digital bits;

    receiving a first echo of the first transmitted signal that is reflected off the target object;

    converting the first echo into a first digitized echo signal; and

    comparing a first receive pattern representative of a second sequence of digital bits to the first digitized echo signal to determine a time of flight of the first transmitted signal and the echo.

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