Obstacle monitoring using motion-compensated distance
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United States of America Patent
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Oct 15, 2019
Grant Date -
Feb 1, 2018
app pub date -
Jul 3, 2017
filing date -
Jul 26, 2016
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An obstacle monitoring system includes a first transducer that obtains a first distance measurement to an obstacle using a first linear frequency modulated (“LFM”) chirp. The system further includes a second transducer, able to operate concurrently with the first transducer, that obtains a second distance measurement to the obstacle using a second LFM chirp. The second LFM chirp has an inverted slope or shifted center frequency compared to the first LFM chirp. The system further includes a controller that processes the first and second distance measurements to determine a motion-compensated distance measurement to the obstacle.
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