幅相误差对机载火控雷达抗干扰性能的影响  

Impact of Amplitude and Phase Errors on Anti-Jamming Performance of Airborne Fire Control Radar

作　　者：李文君 张部生 刘道伟 肖金保 LI Wenjun;ZHANG Busheng;LIU Daowei;XIAO Jinbao(Unit 63893 of PLA,Luoyang 471000,Henan)

机构地区：[1]中国人民解放军63893部队,河南洛阳471000

出　　处：《火控雷达技术》2024年第4期61-65,共5页Fire Control Radar Technology

摘　　要：本文通过建立模型,区分机载火控雷达面临的三种典型干扰情形,分析了幅相误差对火控雷达抗有源干扰的能力的影响。仿真结果表明干扰从非零点副瓣和主瓣进入时,幅相误差主要影响副瓣杂波区,对主瓣杂波区影响不大,抗干扰性能随幅相误差增加而下降。而当干扰从副瓣零点进入时,会造成主瓣分裂,存在幅相误差时,抗干扰性能反而增加。This paper establishes a model to distinguish three typical jamming scenarios faced by airborne fire control radar,based on which the impact of amplitude and phase errors on the ability of airborne fire control radar to resist active jamming is analyzed.The simulation results show that amplitude and phase errors primarily affect the sidelobe clutter region,with little impact on the main lobe clutter region when the jamming signals enter through non-null point in sidelobe or through main lobe.In this case,the anti-jamming performance of the radar decreases with increasing amplitude and phase errors.In addition,when the jamming signals enter through sidelobe null,it causes the main lobe splitting,and the presence of amplitude and phase errors actually improves the anti-jamming performance of the radar.

关 键 词：幅相误差 主瓣干扰 副瓣干扰 改善因子 

分 类 号：TN95[电子电信—信号与信息处理]