RADAR WAVE REPEATER FOR REPORTING APPROACH

摘要

PROBLEM TO BE SOLVED: To prevent collision of vehicles (mobile objects) at a blind crossing.

SOLUTION: The repeater is provided with: a radar wave receiving section 21A for receiving a radar wave from a mobile object; a return section 23A for returning the radar wave received at the radar wave receiving section 21A to the mobile object; a reflected wave receiving section 25A for receiving the radar wave reflected by the mobile object, which is the returned radar wave having been transmitted from the return section 23A; a speed information detection section 26A for detecting a frequency signalΔfa in accordance with the speed information of the mobile object on the basis of the returned radar wave and the reflected wave; and a speed information addition transmission section 30B for mixing the frequency signalΔfa detected in the speed information detection section 26A and the returned radar wave from other mobile object located in a direction different from the direction for receiving the radar wave to transmit it to the above direction.

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