雷达辐射源信号无意调制的加入方法分析及仿真  

Implementation analysis and simulation of radar emitter signals' unintentional modulation

作　　者：田波[1] 龙良将[1] 段洪[2] 

机构地区：[1]西南交通大学信息科学与技术学院,成都610031 [2]西北工业大学电子信息学院,西安710129

出　　处：《电子测量技术》2010年第5期42-45,共4页Electronic Measurement Technology

摘　　要：雷达辐射源信号无意调制的加入方法主要是指相位噪声的加入方法,是理论分析雷达辐射源信号无意调制特征的前提。在单环锁相式频率合成器电路模型基础上,得到雷达频率源的相位噪声,通过相位噪声与频率源瞬时频率相对应的关系,分别分析了常规雷达信号(CW)、二项编码信号(2PSK)和线性调频信号(LFM)3种雷达辐射源信号无意调制的加入方法并进行了仿真。仿真结果表明在加入相位噪声后,3种辐射源信号波形均存在微小差异,这种差异正是无意调制的体现。Implementation of radar emitter signals＇ unintentional modulation refers to phase noise adding method primarily,which is the premise of analyzing unintentional modulation features theoretically.Based on the circuit model of a single phase-locked loop （PLL） frequency synthesizer,phase noise of radar frequency source is obtained.Analyzing the relationship between phase noise and instantaneous frequency,Continuous Wave radar emitter signal（CW）,Binary Phase Shift-Key radar emitter signal（BPSK） and Linear Frequency Modulation radar emitter signal（LFM） are achieved,and implementations and simulations of unintentional modulation are proposed respectively.Small difference exists between the waveforms experimentally,which reflects unintentional modulation of the three types of emitter signals.

关 键 词：雷达辐射源 无意调制 相位噪声 单环锁相 频率合成器 

分 类 号：TN955[电子电信—信号与信息处理]