基于脉冲信号叠加的雷达复合波形低截获性能分析  

The LPI performance analysis of radar combination waveform based on the superposition of pulsed signals

作　　者：王昊飞 Wang Haofei(CETC Key Laboratory of Avionic Information System Technology,Chengdu 610036,Sichuan,China)

机构地区：[1]中国电子科技集团公司航空电子信息系统技术重点实验室,四川成都610036

出　　处：《航天电子对抗》2022年第3期50-54,共5页Aerospace Electronic Warfare

摘　　要：电子侦察系统通过分析侦收到的信号幅度是否超过检测门限来判定雷达信号的有无,进而测量超过门限的信号脉冲宽度、到达角等参数用于实现对雷达信号的分选与识别。对2个脉冲信号叠加的雷达复合波形低截获性能开展研究,结合典型电子侦察系统所采用的检测与分选识别算法,分析脉冲信号叠加所导致的幅度起伏对电子侦察系统性能的影响。理论研究与仿真结果表明,通过合理地设计2个脉冲信号的时域和频域分布关系,可以有效对抗电子侦察系统的检测环节与分选识别环节。The electronic reconnaissance system is able to detect the radar signal if the amplitude of received signal exceeds the detection threshold,and then to sort and identify the radar signal by measuring the pulse width,angle of arrival and some other parameters.The low probability of intercept(LPI)performance of radar combination waveform generated by the superposition of two pulsed signals is investigated.The effect of amplitude fluctuation caused by the superposition of two signals on the electronic reconnaissance system is analyzed according to the typical detection and sorting algorithm utilized by the electronic reconnaissance.Theoretical analysis and simulation results demonstrate that by designing the distribution relation of the two pulsed signals in time domain and frequency domain rationally,this radar combination waveform can effectively antagonize the detection,sorting and identification performance of the electronic reconnaissance system.

关 键 词：低截获概率(LPI)雷达 电子侦察系统 信号检测 分选识别 

分 类 号：TN973[电子电信—信号与信息处理]