| 摘要 |
PURPOSE:To prevent reduction of detection probability of a target, by combining an angle range designating gate circuit for optionally selecting a direction in which interference is generated, and an interference eliminating circuit. CONSTITUTION:A bearing range is decided by a turning angle signal R for showing a rotating angle of an antenna 1. The signal R is inputted to an angle range designating gate circuit 2, is compared with a bearing which is set in advance as a range in which interference is generated, and in case when it is within the range of interference, a receiving signal is made to pass through an interference eliminating circuit 32 by sending out a gate signal to a receiving device 3 and switching a switch 31, and when it is out of the range of interference, it is controlled so that it is not made to pass through the circuit 32, by which a drop of the detection probability outside of the range of interference can be prevented. |
