对LFM脉压雷达的多相位分段调制干扰方法  

A Multiple Phase Sectionalized Modulation Jamming Method for LFM Pulse Compression Radars

作　　者：贵彦乔 吴彦鸿 俞道滨 

机构地区：[1]航天工程大学光电装备系,北京101416

出　　处：《电讯技术》2018年第1期59-65,共7页Telecommunication Engineering

摘　　要：针对分段随机移频干扰对目标速度无法产生欺骗的缺点,提出一种对线性调频(LFM)脉压雷达的多相位分段调制干扰方法。介绍了该方法的基本原理,建立了干扰信号的数学模型,推导了干扰信号的幅相特性和脉冲压缩结果,分析了信号分路数、调制相位数量以及相位调制值3个干扰参数对遮盖效果的影响。仿真对比验证表明,与分段随机移频干扰相比,该方法有较高的干扰功率利用率,能够形成可靠的干扰效果。For the disadvantage that piecewise random shift frequency jamming cannot generate deception to target speed,a jamming method based on phase sectionalized modulation is proposed for linear frequency modulation（ LFM） pulse compression radars. Its basic principle is introduced,and the jamming signal＇s mathematical model is established. Then the magnitude-phase characteristics and pulse compression result of jamming signal are derived,and the impacts of number of signals,modulation phase and phase modula-tion value on overspread effect are analyzed. Simulation results show that the method can achieve reliable jamming effects and has higher jamming power utilization compared with piecewise random shift frequency jamming.

关 键 词：LFM脉压雷达 分段随机移频干扰 多相位分段调制干扰 遮盖效果 

分 类 号：TN974[电子电信—信号与信息处理]