Object detecting device and method with means for controlling direction of scan by electromagnetic waves
First Claim
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1. An object detecting device for emitting electromagnetic waves in a forward direction and detecting an object from reflected waves of said emitted electromagnetic waves;
- said object detecting device comprising;
emitting means for emitting said electromagnetic waves by scanning a scan range in horizontal and vertical directions;
receiving means for receiving said reflected waves;
level obtaining means for obtaining level of said reflected waves received by said receiving means;
calculating means for calculating a first correction value based on vertical position of a zone in said scan range where the level of said received waves is the highest and the center position of said scan range in the vertical direction; and
correcting means for correcting the center position in the vertical direction of said scan range based on said first correction value calculated by said calculating means.
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Abstract
An object detecting device has components which emit electromagnetic waves by scanning a scan range in horizontal and vertical directions, receive reflected waves, obtain signal level of the received reflected waves, calculate a correction value based on vertical position of the zone in the scan range where the level of the received waves is the highest and the center position of the scan range in the vertical direction, and correct the center position in the vertical direction of the scan range based on the calculated correction value.
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Citations
9 Claims
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1. An object detecting device for emitting electromagnetic waves in a forward direction and detecting an object from reflected waves of said emitted electromagnetic waves;
- said object detecting device comprising;
emitting means for emitting said electromagnetic waves by scanning a scan range in horizontal and vertical directions;
receiving means for receiving said reflected waves;
level obtaining means for obtaining level of said reflected waves received by said receiving means;
calculating means for calculating a first correction value based on vertical position of a zone in said scan range where the level of said received waves is the highest and the center position of said scan range in the vertical direction; and
correcting means for correcting the center position in the vertical direction of said scan range based on said first correction value calculated by said calculating means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- said object detecting device comprising;
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9. A method of detecting an object;
- said method comprising the steps of;
emitting electromagnetic waves in a forward direction by scanning a scan range in horizontal and vertical directions;
receiving reflected waves of said electromagnetic waves;
obtaining level of said reflected waves received in the step of receiving;
calculating a first correction value based on vertical position of a zone in said scan range where the level of said received waves is the highest and the center position of said scan range in the vertical direction; and
correcting the center position in the vertical direction of said scan range based on said first correction value calculated in the step of calculating.
- said method comprising the steps of;
Specification