RADAR DEVICE AND RAIN/SNOW AREA DETECTING DEVICE
First Claim
1. A radar device, comprising:
- a radar antenna, from which detection signals are transmitted while the radar antenna being rotated, the radar device generating a radar image from reflection waves of the transmitted detection signals;
a reception module for receiving the reflection waves of the detection signals;
an inclination calculating module for calculating an inclination of level of the received signals that continue in a predetermined direction, the inclination being a rate of change in the received signal level per predetermined range in the predetermined direction; and
a rain/snow reflection determining module for determining whether the received signals are reflection signals from at least one of rain and snow by using the inclination calculated by the inclination calculating module.
1 Assignment
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Accused Products
Abstract
A radar device is disclosed. The radar device includes a radar antenna, from which detection signals are transmitted while the radar antenna being rotated, the radar device generating a radar image from reflection waves of the transmitted detection signals, a reception module for receiving the reflection waves of the detection signals, an inclination calculating module for calculating an inclination of level of the received signals that continue in a predetermined direction, the inclination being a rate of change in the received signal level per predetermined range in the predetermined direction, and a rain/snow reflection determining module for determining whether the received signals are reflection signals from at least one of rain and snow by using the inclination calculated by the inclination calculating module.
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Citations
13 Claims
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1. A radar device, comprising:
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a radar antenna, from which detection signals are transmitted while the radar antenna being rotated, the radar device generating a radar image from reflection waves of the transmitted detection signals; a reception module for receiving the reflection waves of the detection signals; an inclination calculating module for calculating an inclination of level of the received signals that continue in a predetermined direction, the inclination being a rate of change in the received signal level per predetermined range in the predetermined direction; and a rain/snow reflection determining module for determining whether the received signals are reflection signals from at least one of rain and snow by using the inclination calculated by the inclination calculating module. - View Dependent Claims (2, 3, 4, 5, 11, 12)
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6. A rain/snow area detecting device, comprising:
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an acquisition module for acquiring received signals detected by a radar; an inclination calculating module for calculating an inclination of level of the received signals that continue in a predetermined direction, the inclination being a rate of change in the received signal level per predetermined range in the predetermined direction; and a rain/snow reflection determining module for determining whether the received signals are reflection signals from at least one of rain and snow by using the inclination calculated by the inclination calculating module. - View Dependent Claims (7, 8, 9, 10)
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13. A method of detecting a rain/snow area, comprising:
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acquiring received signals detected by a radar; calculating an inclination of level of the received signals that continue in a predetermined direction, the inclination being a rate of change in the received signal level per predetermined range in the predetermined direction; and determining whether the received signals are reflection signals from at least one of rain and snow by using the calculated inclination.
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Specification