| 摘要 |
PURPOSE:To lower a ratio to be detected by disabling the passive sensor of a target, by reducing a transmission pulse according to the movements of the target while changing the transmission cycle of the transmission pulse at random. CONSTITUTION:A transmitter-receiver 2 outputs the transmission pulse from a transmitter 8 toward a target 1 and inputs a receiving signal reflected from the target 1 to output the same to a receiver 3. A measuring calculator 5 calculates a speed signal 6 and an acceleration signal 7 from the position of the target 1. The transmitter 8, to which the acceleration signal 7 is inputted, automatically changes the interval of the transmission pulse so as to narrow the same when the acceleration signal 7 is large and to contrarily widen the same when the acceleration signal 7 is small and changes the sending cycle of the transmission pulse at random. |
