一种基于间歇采样的新型干扰技术及实现

干扰机为有效干扰多部雷达,须尽量增加其侦收时间,以保证不同雷达信号的接收,且干扰信号应在时域、频域、脉压域对雷达信号均能形成有效的干扰。针对线性调频信号,在侦收占空比50%基础上,通过间歇采样、时域重复叠加和移频调制,提出一种新型多假目标干扰和实现架构,研究了不同延迟叠加数、权值和移频调制下假目标的数目、幅度和密集度的影响。仿真实验表明:该型干扰在保证侦收占空比的同时能很好地起到多假目标的欺骗效果,K=N幅度均匀加权叠加较符合实际应用。

A New-style Jamming Technology and Implementation Based on Interrupted-sampling

In order to interfere multi radars, the jammer investigation time should be as long as possible to ensure different radar signals are received. Besides, interference signal should generate effective interference on time, frequency, pulse compression domain. LFM signal is discussed, based on duty cycle equals 50%, through interrupted sampling, repeated stacking and frequency shift modulation, a new jamming type and implementation architecture are proposed. Moreover, the influence of different overlay delay count weigh and frequency shift modulation on number, amplitude and density of dense false target are studied. Simulation shows that the jamming can play a good role in deceiving many false targets and ensure duty cycle, uniform amplitude weighting accords with practical application when K=N.