密集扫频干扰下调频连续波引信响应特性

As a typical suppressed jamming method, the dense sweep jamming poses a huge threat to frequency-modulated continuous wave (FMCW) fuze in the actual battlefield. Aiming at the problem that FMCW fuze is easy to fail under dense sweep jamming, the response process of FMCW fuze under dense sweep jamming is deduced on the basis of analyzing the working principle of FMCW fuze. Equivalent jamming effect after using zero time-domain interference sample is further analyzed, and the relevant simulation analysis and experimental verification are carried out. The simulated and experimental results show that the more similar the dense sweep jamming signal to the fuze signal, the larger the effective jamming proportion in the time-domain sample of beat frequency signal is. The interrupted-sampling and repeater jamming effect on the real target signal of FMCW fuze is produced after zeroing the interfered samples in time domain. Multiple false targets are generated on the envelope of distance dimension. The distribution of false targets is related to the equivalent duty cycle and jamming frequency after zeroing processing, which results in a significant increase in the explosion point dispersion of FMCW fuze.