Obstacle detection device and obstacle detection system
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United States of America Patent
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Jul 23, 2002
Grant Date -
Dec 20, 2001
app pub date -
Jun 1, 2001
filing date -
Jun 1, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An obstacle detection system includes a leaky transmission path, a leaky receiving path opposite to the leaky transmission path, a spread spectrum signal generator connected to an end of the leaky transmission path and generating a spread spectrum signal for radiation from the leaky transmission path to detect an obstacle. A correlator is connected to an end of the leaky receiving path to calculate a level of correlation between a reference spread spectrum signal and a spread spectrum signal received by the leaky receiving path. A detector detects an obstacle in accordance with a change in the level of correlation calculated by the correlator.
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