新的箔条云全空域极化散射模型及仿真分析  

New Omnibearing Model and Its Simulation Analysis of Chaff

作　　者：党晓江[1] 李政杰[2] 王强[2] 

机构地区：[1]中国人民解放军94175部队 [2]空军工程大学防空反导学院

出　　处：《现代防御技术》2014年第4期185-192,共8页Modern Defence Technology

摘　　要：箔条云散射截面(RCS)的大小决定着无源干扰对抗效果,而非球面均匀分布箔条云在诸如极化、视角等不同入射、散射条件下的RCS差别很大。为此,建立了双基地箔条云极化散射模型,提出了基于经典定义的新的RCS计算方法,数值计算了水平正态分布箔条云全空域经典RCS、功率匹配因子和等效RCS的统计均值。仿真结果显示,箔条云双基地RCS在非对称波通道、不同极通道下的统计均值波动较大,并且在特殊波通道和极通道下的统计均值与文献吻合。结论可为箔条云双基地对抗策略制定提供理论指导。Passive jamming performance is largely determined by the size of chaff RCS,but the RCS of chaff which is not spherically well-distributed has a great difference in conditions such as polarization,radar sight of incidence and scattering.Therefore,bistatic polarimetic scattering model of chaff was constructed and new computational method of chaff RCS based on classical definition was presented,and omnibearing classical RCS,power matching factor and equivalent RCS was also computed numerically.The simulation results show that bistatic statistical mean RCS of chaff obeying horizontal Gaussian distribution has a great fluctuation on asymmetric wave and different polarization passageway,and statistical mean data computed on the specific wave and polarization passageway are identical with reference documentation.The conclusions can be for a reference for developing bistatic counterplot.

关 键 词：箔条云 极化散射 双基地RCS 极通道 仿真分析 

分 类 号：TN972[电子电信—信号与信息处理] TP391.9[电子电信—信息与通信工程]