雷达低截获波形抗主瓣干扰技术研究与试验

The Research and Experiment of Anti-interference Ability on Radar with Low-acquisition Wave

针对雷达面临灵巧多样的强主瓣干扰这一严峻问题,以提高雷达抗主瓣干扰性能的紧迫性为需求,基于多域联合捷变波形设计的抗干扰思想,提出了一整套基于干扰环境感知和低截获波形调度的抗主瓣干扰雷达设计方法。经过充分的仿真验证及方案论证,从时域、频域、空域、极化域四个维度对单站抗干扰技术进行了梳理,并从多域联合处理的角度,着重分析了复合捷变波形对抗干扰的优势、波形设计准则及其相参处理方法;同时搭建试验环境,进行了多种主瓣干扰环境下的目标跟踪试验,验证了该技术的有效性。

In order to improve the anti-jamming performance of radar when under complicated main-lobe interference,a comprehensive design of anti-interference radar under jamming environment perception and LPI(low probability of intercept)waveform dispatching was proposed in this paper based on the concept of multi-domain agility.Four domains including time,frequency,space,and polarization were all considered for concept demonstration and simulation experiment;the anti-jamming advantages and design criteria of the waveform,as well as fast algorithm of phase-coherent accumulation were analyzed from the perspective of multi-domain processing.Furthermore,the experiment of target tracking was set up under multi main-lode interference environment to prove the validity of the proposed method.