全极化雷达抗拖曳式有源干扰技术  

Study on countering the towed jamming method in full polarized radar

作　　者：刘玉静 苏宏艳 杨彩霞 樊润东 Liu Yujing;Su Hongyan;Yang Caixia;Fan Rundong(Beijing Institute of Remote Sensing Equipment,Beijing 100191,China)

机构地区：[1]北京遥感设备研究所,北京100191

出　　处：《航天电子对抗》2022年第4期36-40,共5页Aerospace Electronic Warfare

摘　　要：针对雷达面临复杂多变的电磁环境,提出了一种基于极化域信号处理的抗拖曳式有源干扰方法以提升雷达的抗干扰性能。该方法是在时域、频域和空域以外的另一个信息维度对干扰进行抑制,增强目标信号检测性能。在分析拖曳式有源干扰机理的基础上,通过计算机仿真和室内半实物仿真验证了极化域抗有源干扰方法的有效性,通过设计对应的单凹口极化滤波器进行极化处理,对噪声压制干扰和假目标干扰均能够实现良好的干扰抑制,干扰抑制比达到30 dB,从而提高雷达有源干扰环境下的目标检测概率。A method of countering the towed jamming based on full polarization radar is proposed in order to improve the anti-jamming performance of the radar.This interference suppression method based on the differences of polarization characteristics between target and interference,is different from the traditional methods of time,frequency and spatial domain to enhance the performance of target signal detection.According to the analysis of the mechanism of towed active jamming,the effectiveness of the countering active jamming method in polarization domain is verified by computer simulation and semi-physical radar simulation.A series of experiment results indicate that good interference suppression can be achieved for noise suppression and false targets interference by using single notch polarization filter.The interference suppression ratio can be achieved 30 dB to improve the target detection probability in the radar active jamming environment.

关 键 词：极化鉴别 极化滤波 抗有源干扰 

分 类 号：TN957[电子电信—信号与信息处理]