为了研究对三角波调频无线电引信的干扰方法及干扰效果,采用连续波对其进行干扰。发现当干扰信号达到一定能量后可以压制真实的目标信号。通过理论分析和计算机仿真证明,产生这种现象的原因是由于连续波干扰信号在混频后具有很宽的频带范围,覆盖和压制了目标回波信号的谱线。由于干扰信号不能满足距离和速度判别条件,所以引信不会误启动。

To research jamming method and effect for radio fuse frequency modulated by triangular wave, the continuous wave of the same center frequency as that of the radio fuse was applied. It was found that when the jamming signal is up to certain energy, it can suppress the true echo signal of the target. Theoretical analysis and computer simulation prove the reason why the phenomenon occurs is that the continuous jamming wave has wide-band after mixing to cover and suppress the spectrum of the true echo signal of the target, but the jamming signal can’t satisfy the judge condition of distance and speed, so the fuse won’t startup wrongly.