| 摘要 |
<p>PURPOSE:To reduce the probability that the device is disturbed with a radio wave from an enemy by setting reception sensitivity in a state corresponding to the distance to the target by a timer. CONSTITUTION:The homing guiding device receives the radio wave or laser light reflected by the target by an antenna or optical system 1 and generates a control signal for guiding an flying body to the target. When the flying body is launched, information on the distance from a launching device to the target is received and the timer 5 is set; and the distance to the target is estimated according to the elapsed time from the launching to control the reception sensitivity. Namely, the timer 5 controls a voltage generator 6 so that the reception sensitivity of a preamplifier 3 becomes minimum until at reaches a receivable distance and the reception sensitivity is set corresponding to the distance to the target in an intermediate or short distance.</p> |
