Radar detection method and apparatus
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United States of America Patent
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Jun 10, 2003
Grant Date -
Apr 18, 2002
app pub date -
Aug 16, 2001
filing date -
Aug 16, 2000
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A radar detection process includes computing a derivative of an FFT output signal to detect an object within a specified detection zone. In one embodiment, a zero crossing in the second derivative of the FFT output signal indicates the presence of an object. The range of the object is determined as a function of the frequency at which the zero crossing occurs. Also described is a detection table containing indicators of the presence or absence of an object within a respective radar beam and processing cycle. At least two such indicators are combined in order to detect the presence of an object within the detection zone.
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