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US 6,335,700 B1Granted
Radar apparatus for preventing erroneous detection by comparing sensitivities of each combination of transmitting and receiving units
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A radar apparatus for preventing a problem due to an abnormal state such as degradation of a transmitting or receiving unit. The apparatus includes a transmitting section including beam transmitting units for radiating a plurality of beams, where adjacent beams have an overlapped portion; and a receiving section including beam receiving units for receiving reflection waves reflected from a target object. Transmitting and receiving combinations between the beam transmitting units and the beam receiving units are determined so as to detect the position of the target object. The apparatus further includes a sensitivity comparing section for comparing sensitivities with respect to the transmitting and receiving combinations; and an abnormal state determination section for determining an abnormal state of any one of the above units based on a result of the comparison of the sensitivity comparing section.
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