基于调相LFM建模的雷达信号处理方法  

Radar Signal Processing Method Based on Phase Modulation LFM Modeling

作　　者：孙健 杨文 邹永杰 刘正堂 蒋旭 郭恩泽 SUN Jian;YANG Wen;ZOU Yongjie;LIU Zhengtang;JIANG Xu;GUO Enze(Unit 63893 of PLA,Luoyang 471003,China)

机构地区：[1]解放军63893部队,河南洛阳471003

出　　处：《舰船电子对抗》2025年第1期89-92,共4页Shipboard Electronic Countermeasure

摘　　要：为了解决实际中由于雷达无意调制特性导致识别结果出现偏差的问题,对信号处理方法展开具体分析研究。首先,针对雷达发射机,从普遍性、唯一性、稳定性和可测性等方面对调制特性进行了分析。在此基础上,以典型的LFM信号为例,通过对调相噪声的分析,建立附带调相噪声的LFM数学模型;最后利用不同调相系数以及频偏对LFM信号进行仿真,分析调相噪声对识别计算的频率偏差,为优化识别策略提供参考支持。In order to solve the problem that the unintentional modulation characteristic of radar leads to the deviation of recognition results in practice,the signal processing method is analyzed in detail.Firstly,considering the radar transmitter,the modulation characteristics are analyzed from the aspects of universality,uniqueness,stability and testability.On this basis,taking the typical linear frequency modulation(LFM)signal as an example,the LFM mathematical model with phase modulation noise is established by analyzing the phase modulation noise.Finally,the LFM signal is simulated with different phase modulation coefficients and frequency offset,and the frequency offset of phase modulation noise to recognition calculation is analyzed,which provides reference support for optimizing the recognition strategy.

关 键 词：雷达对抗 调制特性 调相噪声 

分 类 号：TN971.1[电子电信—信号与信息处理]