DISTANCE ESTIMATION DEVICE AND METHOD USING THE DIFFERENCE OF WAVE SPEED BETWEEN WAVES
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United States of America Patent
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Jun 18, 2015
app pub date -
May 27, 2014
filing date -
Dec 13, 2013
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Abstract
The present disclosure provides a distance estimation device, including a wave signal detection unit configured to measure different types of waves, respectively, to detect different wave signals, a time delay estimation unit configured to produce a correlation coefficient from the detected different wave signals, and computes an arrival time difference using the correlation coefficient, and a distance calculation unit configured to estimate the distance of a target object using an arrival time difference for each of the different types of waves.
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