| 摘要 |
<p>PURPOSE:To stably receive a radar receiving signal without degrading SN ratio in a state that no jamming wave exists, by automatically detecting whether a jamming wave exists or not, and controlling the operation of a adaptive loop. CONSTITUTION:The comparator 34 compares a signal level on the main channel with the prescribed level, outputs the binary information, and decides whether a jamming wave exists or not by this binary information in the deciding circuit 36. An output of the deciding circuit 36 controls the switching circuit 39 inserted between the subtracter 28 and the multiplier 33, and unless the turbing wave exists, the switch is turned off, and the adaptive loop is separated from the main channel side. Accordingly, in such a state, a noise generated by the multiplier 33, etc. does not appear at the output terminal 29, and the signal level of the radar receiving signal is output as it is to the output terminal 29.</p> |
