雷达前端强电磁脉冲前门耦合研究  

Research on high power EMP coupling into radar front-end by front-gate

作　　者：蒋伟[1] 王光[1] 洪杰峰 余娟[1] 

机构地区：[1]空军预警学院,武汉430019

出　　处：《空军预警学院学报》2015年第1期19-22,26,共5页Journal of Air Force Early Warning Academy

摘　　要：针对强电磁脉冲能量经天线耦合进入雷达前端的威胁,给出了电磁脉冲炸弹的毁伤模型,并计算了目标点处的功率密度和场强振幅.然后通过分析天线的工作原理,以雷达抛物面天线为例,用电磁仿真软件CST仿真计算了强电磁脉冲途经矩形口径喇叭、波导同轴转换器、同轴线和带通滤波器时各点的时域电压波形,得出了前门耦合数据及其影响要素.这为深入分析雷达前门耦合规律、验证防护手段提供了方法.Aimed at the threat of high power electromagnetic pulse （EMP） energy coupling into radar front-end over the antenna, this paper gives a damage model by the EMP bomb, and calculates the power density and the amplitude of field intensity at target’s point. And then, by analyzing the operating principles of the anten-na and taking an example of radar’s paraboloid antenna, it computes the voltage waveforms in time-domain at each point when the strong EMP is going through the rectangular aperture horn, coaxial-to-waveguide transducer, coaxial line and band-pass filter, and obtains the front-gate coupling data and its influential factors, which offers an effective method for a deep analysis of coupling laws of radar front-gate, and testing the protective means.

关 键 词：电磁脉冲弹 雷达前端 毁伤模型 前门耦合 CST 

分 类 号：TN95[电子电信—信号与信息处理]