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Method and apparatus for enhancing the detecting and tracking of moving objects using ultrasound

  • US 7,894,874 B2
  • Filed: 05/08/2006
  • Issued: 02/22/2011
  • Est. Priority Date: 05/08/2006
  • Status: Expired due to Fees
First Claim
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1. An ultrasonic pulse echo apparatus for detecting an object that is moving with respect to a stationary object, comprising:

  • an ultrasound transducer for transmitting a series of ultrasound pulses in a direction that intersects a path of the moving object;

    an ultrasound receiver for receiving multiple lines of echoes from the objects in the field of view of the ultrasonic signal, each echo line corresponding to one of the ultrasonic pulses; and

    a signal processor for determining an envelope of each of the echo lines, time shifting the echo envelope lines different amounts, and preferentially enhancing the echoes from moving objects by combining the echo envelope lines at different time shifts and selecting one of the combined echo envelope lines with an optimal signal-to-noise ratio.

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