线性调频雷达的部分倒相转发干扰方法

Repeater jamming of LFM radar based on partial phase inversion

为研究线性调频脉压雷达产生相干假目标串的干扰效果,针对间歇采样转发干扰的导前假目标数量和导前距离有限问题,提出了利用部分采样信号倒相调制来产生干扰信号的部分倒相转发干扰方法.首先根据干扰信号特征,理论上分析了基于间歇采样的部分倒相转发干扰效果,然后进行了仿真实验.理论分析和仿真结果表明,部分倒相转发干扰较间歇采样转发干扰的干扰效果更优,不仅假目标数量更多,而且假目标导前能力更强.

To study the jamming effect of the coherent false target string generated by the LFM pulsecompression radar, this paper puts forward a method of partial phase inversion repeater jamming that generates thejamming signals by using the phase inversion modulation of partial sampling signals, in light of the problem thatthe number of leading false targets and the leading distance of the interrupted-sampling repeater jamming arelimited. Firstly, on the basis of the jamming signals’characteristics this paper analyzes theoretically the repeaterjamming efffect of partial phase inversion based on the interrupted-sampling, and then performs the correspondingsimulation experiment. Theoretical analysis and simulation results show that the jamming effect of partial phaseinversion repeater jamming is much better than that of the interrupted-sampling repeater jamming, and not onlythe number of false tagets is even more, but also the leading capability of false targets is more powerful.