基于盲源分离的时域极化域联合抗SMSP干扰  

Anti-SMSP Jamming by Time-Polarization Domain Combination Based on Blind Source Separation

作　　者：于学呈 李兴成[1] 万珊珊 YU Xuecheng;LI Xingcheng;WAN Shanshan(Air and Missile Defense College,Air Force Engineering University,Xi'an 710000,China)

机构地区：[1]空军工程大学防空反导学院,西安710000

出　　处：《电光与控制》2022年第2期12-15,24,共5页Electronics Optics & Control

基　　金：国家自然科学基金(61701527)。

摘　　要：频谱弥散(SMSP)干扰是一种针对线性调频(LFM)信号雷达的有源干扰,它在时域和频域上与LFM信号高度相似,当干扰信号从主瓣进入时,雷达更难以探测目标。采用混合极化天线接收系统,并结合干扰信号在相邻脉冲重复周期之间的差异,利用时域通道和极化域通道联合得到的时域极化域联合通道来获得混合信号,应用盲源分离算法分离出目标信号和干扰信号,最后通过脉冲压缩来获取目标信号,从而达到抗干扰的目的。仿真结果表明,这种方法能够很好地从混合信号中提取目标信号。Smeared Spectrum(SMSP)jamming is a kind of active jamming on Linear Frequency Modulated(LFM)signal radar.The jamming signals are highly similar to LFM signals in time domain and frequency domain.When the jamming signals enter from the mainlobeit is more difficult for radar to detect the targets.To solve the problemthe hybrid polarization antenna reception system is adoptedthe differences of jamming signals in adjacent Pulse Repetition Intervals(PRI)are usedand the time-domain channel and the polarization-domain channel are combined to be a joint channel to obtain the mixed signals.Thenthe blind source separation algorithm is applied to separate target signals from jamming signalsand finally the target signals are obtained by pulse compressionso that the goal of anti-jamming is realized.Simulation results show that this method can effectively extract target signals from the mixed signals.

关 键 词：雷达抗干扰 频谱弥散干扰 盲源分离 联合时域极化域 

分 类 号：V271.4[航空宇航科学与技术—飞行器设计]