关于制导雷达目标识别抗箔条干扰仿真研究  

Anti-Chaff Jamming Method of Target Recognition for Guidance Radar Based on Frequency Characteristics

作　　者：李尚生[1] 付哲泉 

机构地区：[1]海军航空工程学院电子信息工程系,山东烟台264001

出　　处：《计算机仿真》2016年第5期19-22,46,共5页Computer Simulation

摘　　要：在制导雷达目标识别优化的研究中,针对箔条干扰制导雷达的目标识别过程的问题,分析箔条干扰回波信号频域特征有助于制导重达实现对箔条干扰的识别。传统方法仅考虑箔条平动造成的频谱变化,忽略锥动对回波频谱的影响,不能真实反应箔条干扰回波信号特征。建立考虑箔条锥动的回波信号模型。模型综合考虑箔条丝平动与锥动对雷达回波信号频谱的影响,得到不同参数变化时,箔条云雷达回波信号频谱的变化规律,同时仿真舰船目标运动时霄达回波信号的频谱特征,结果表明舰船目标的雷达回波信号频谱展宽幅度要小于箔条云的频谱展宽幅度,研究结论有助于制导雷达实现基于频谱展宽特性的目标识别,提高制导雷达的目标识别能力,也可用于内场条件下建立更真实的箔条干扰环境,改善雷达抗干扰性能。Chaff jamming is main interference on the target recognition process for guidance radar,and analysis of the frequency feature of chaff jamming echo signals will help guidance radar to realize the recognition of chaff jamming.The traditional method only considers the spectrum changes caused by translation,and ignores the cone rotary motion.It cannot reflect the features of chaff jamming echo signals.An echo signal model is established,which considers the effect of chaff translation and cone rotary motion on spectrum.The change rules of echo signal spectrum for chaff cloud＇s radar are obtained while different parameters change.At the same time,spectrum signature of radar echo signal is simulated for moving ship target,and the results show that the radar echo signal spectrum broadening scope of radar ship target is smaller than that of chaff cloud.The conclusion contributes to the realization of target recognition for guidance radar based on spectral broadening feature and the improvement of guidance radar target recognition ability,can also be used to build real diamond conditions of chaff jamming environment to improve anti-jamming ability of radar.

关 键 词：雷达 箔条干扰 频域特性 锥动 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]