Method and apparatus for enhancing the detecting and tracking of moving objects using ultrasound
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United States of America Patent
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Feb 22, 2011
Grant Date -
Oct 14, 2010
app pub date -
May 8, 2006
filing date -
May 8, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An ultrasonic pulse echo apparatus detects an object that is moving with respect to stationary objects. An ultrasonic transducer transmits a series of ultrasound pulses in a direction that intersects a path of the moving object. An ultrasound receiver receives a series of lines of echoes from objects in the field of view of the ultrasonic signal. Each echo line corresponds to one of the ultrasonic pulses. A signal processor processes the echo lines from the moving object. The echo lines are time shifted by different amounts and combined at different time shifts to produce different composite lines. The composite line having an optimal signal-to-noise ratio is selected. Other signal processing enhancements are performed.
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