APPARATUS AND METHOD FOR DETECTING AND CORRECTING FOR BLOCKAGE OF AN AUTOMOTIVE RADAR SENSOR
First Claim
1. A radar system in a movable host system, the radar system comprising:
- a radar detector for detecting reflected radar signals and converting the reflected radar signals into digital data signals;
a motion detector for detecting motion of the host system and generating a signal indicative of velocity of the host system; and
a processor for receiving the digital data signals and processing the digital data signals to categorize the digital data signals into one or more target categories, one of the target categories being an environmental clutter category, the processor associating each of a plurality of processed groups of the digital data signals with a velocity, one of the groups of digital data being associated with a first preselected velocity;
wherein, when the signal indicative of velocity of the host system indicates that the velocity of the host system has changed, if the velocity associated with the one of the groups of digital data of the environmental clutter category has not changed from the first preselected velocity, then the processor generates a signal which indicates that the radar detector is at least partially blocked.
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Accused Products
Abstract
A radar system and method in a host system include a radar detector detecting reflected radar signals and converting the reflected radar signals into digital data signals. A motion detector detects motion of the host system and indicates velocity of the host system. A processor receives the digital data signals and processes the digital data signals to categorize the digital data signals into target categories, one of the target categories being an environmental clutter category, the processor associating each of a plurality of processed groups of the digital data signals with a velocity, one of the groups of digital data being associated with a first preselected velocity. When the velocity of the host system changes, if the velocity associated with the one of the groups of digital data of the environmental clutter category has not changed, then the processor indicates that the radar detector is at least partially blocked.
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Citations
26 Claims
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1. A radar system in a movable host system, the radar system comprising:
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a radar detector for detecting reflected radar signals and converting the reflected radar signals into digital data signals; a motion detector for detecting motion of the host system and generating a signal indicative of velocity of the host system; and a processor for receiving the digital data signals and processing the digital data signals to categorize the digital data signals into one or more target categories, one of the target categories being an environmental clutter category, the processor associating each of a plurality of processed groups of the digital data signals with a velocity, one of the groups of digital data being associated with a first preselected velocity; wherein, when the signal indicative of velocity of the host system indicates that the velocity of the host system has changed, if the velocity associated with the one of the groups of digital data of the environmental clutter category has not changed from the first preselected velocity, then the processor generates a signal which indicates that the radar detector is at least partially blocked. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of processing in a movable radar system, the method comprising:
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detecting reflected radar signals with a radar detector and converting the reflected radar signals into digital data signals; detecting motion of the radar system and generating a signal indicative of velocity of the radar system; processing the digital data signals to categorize the digital data signals into one or more target categories, one of the target categories being an environmental clutter category, the processing including associating each of a plurality of processed groups of the digital data signals with a velocity, one of the groups of digital data being associated with a first preselected velocity; and generating a signal which indicates that the radar detector is at least partially blocked when, if the signal indicative of velocity of the radar system indicates that the velocity of the radar system has changed, the velocity associated with the one of the groups of digital data of the environmental clutter category has not changed from the first preselected velocity. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification