对ESM系统副瓣抑制接收机的干扰方法研究

Research on Coherent Interference Technology of Sidelobe Suppression Receiver in ESM System

针对我方雷达信息易被敌方电子对抗支援侦察(ESM)系统获取的问题,通过分析ESM侦察系统中副瓣抑制接收机的工作原理,提出一种相干干扰的干扰方法,使我方雷达信号到达敌方侦察设备后同干扰信号一起被接收机滤除,从而降低敌方侦察我方雷达信息的能力。在相干干扰机理研究的基础上,对相干干扰所需的最小强度(临界强度)及其影响因素进行了推导分析,并通过仿真得到了干扰入射角度和相位差对临界强度的影响效果,以及使临界强度最低的最优干扰条件。

In order to solve the problem that our radar information is easily acquired by the enemy electronic support measurement(ESM)system,the paper puts forward an interference method of coherent interference by analyzing the working principle of the sidelobe suppression receiver in the ESM system,which makes our radar signal be filtered out together with the interference signal after reaching the enemy reconnaissance equipment.Thus the enemy s ability to detect our radar information is reduced.Based on the study of coherent interference mechanism,the minimum intensity(critical strength)and its influencing factors for coherent interference are deduced and analyzed.The effects of interference incident angle and phase difference on critical strength and the optimal interference condition with the lowest critical strength are obtained through simulation.