Patent ID: 7528766

Claim:
A radar device installed in a vehicle for detecting a target around the vehicle, the radar device comprising: a transmitter that transmits a plurality of radio signals at intervals; a scanning mechanism arranged such that each of the plurality of radio signals is individually entered thereto, the scanning mechanism being swingable relative to the transmitter to change a direction of each of the plurality of radio signals entered thereto, thus scanning each of the plurality of radio signals over an angular scanning field, the angular scanning field being located around the vehicle; and a receiver that receives a plurality of reflected signals to detect intensities of the plurality of received reflected signals, at least some of the plurality of reflected signals being generated based on reflection of at least some of the plurality of radio signals from the target; wherein the scanning mechanism comprises: a swinging unit that swings the scanner mechanism to a swung position for individually each of the plurality of radio signals entered to the scanner mechanism, the swung position for individually each of the plurality of radio signals being required to scan the angular scanning field; an integrating unit that integrates the at least some of the plurality of reflected signals to obtain an integrated signal, the at least some of the plurality of radio signals being transmitted to be adjacent to each other via the scanning mechanism within a predetermined integration angular range contained in the angular scanning field; and a detector that compares an intensity of the integrated signal with a predetermined threshold intensity to detect the target based on the comparison result.