Vehicle tracking control for continuously detecting the distance and direction to a preceding vehicle irrespective of background dark/light distribution
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United States of America Patent
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Jun 25, 1991
Grant Date -
N/A
app pub date -
Feb 16, 1990
filing date -
Mar 1, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In an automobile radar apparatus according to the present invention, a light-receiving optical system is rotated in response to an output from an image formation position calculation unit in such a manner that light source is focused on a vertical plane containing an optical axis of the light-receiving optical system; a direction up to the preceding vehicle is calculated from a turning angle in response to an output derived from an angular detecting unit; and a distance up to the preceding vehicle is calculated from an image position of the light source based upon an output derived from the image formation calculation unit.
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