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研究模拟回波对自差式连续波多普勒引信的干扰有效性．方法应用非线性振荡理论分别分析了自差式连续波多普勒引信在真实回波与模拟回波作用下的工作状态，并对两种信号的作用特性进行了比较，结果模拟回波作用下的自差机有３种工作状态：①频率和能量条件均满足时，自差机处于牵引状态；②满足能量条件，但频率条件不满足时，模拟回波将被自差引信的信号处理通带滤除；③满足频率条件，但能量太小时，也不能产生有效的点火信号．结论自差机的特性决定了非相干的模拟回波不能对自差式连续引信产生有效干扰．
The effectiveness of simulated echo on the self-consistent continuous wave Doppler fuze is studied. Methods The operating states of self-consistent continuous wave Doppler fuze under the action of real echo and simulated echo are analyzed respectively by using nonlinear oscillation theory. The characteristics of the two signals are compared. The results show that under the action of simulated echo There are three working states from the difference machine: ① When the frequency and energy conditions are satisfied, the self-difference machine is in tow; ② When the energy condition is satisfied, but the frequency condition is not satisfied, the analog echo will be processed by the signal processing pass band Filter; ③ meet the frequency conditions, but the energy is too small, it can not produce an effective ignition signal. CONCLUSIONS The characteristics of self-difference machines determine that incoherent analog echoes can not effectively interfere with self-consistent continuous fuzes.