无线电引信双源辐照效应研究

为了探索复杂电磁环境对无线电引信的作用规律,提出双辐射源电磁环境构建方法和试验方法,试验研究了无线电引信的双辐射源电磁环境效应,找到了使无线电引信意外起爆的双辐射源辐照频率组合方式和敏感阈值。发现双辐射源使无线电引信意外起爆的作用机理:引信天线及弹体接收到差频为多普勒频率的复合连续波信号,经自差机振荡器混频、检波管检波并滤波后,输出信号幅度较大的正弦波信号,经低频电路放大、信号整流积分及抗干扰惯性支路的共同作用,通过增幅速率选择电路,触发执行级电路误动作导致引信意外起爆。

Effect of dual sources irradiation on a radio fuze

To investigate the effects of complex electromagnetic environment on radio fuze, the method of building an environment with dual radio sources and the testing process were put forward. The electromagnetic environment effects on the radio fuze was measured, and different frequency combinations of the two sources which initiate accidental detonation of the radio fuze were studied. It is found that the signal the radio fuze antenna and projectile received was a Doppler signal, which would be mixed by an autodyne receiver oscillator, detected and filtered by a rectifier, then a sine wave with high amplitude output. With the effects of low frequency circuit, the rectification and integrating circuit, and the anti-interference inertia branch circuit, the signal would pass the amplification rate selecting circuit, then the executive circuit would be triggered, and the radio fuze would explode accidentally.