弹道导弹目标微动特性的微多普勒分析与仿真研究  

Micro-Doppler Analysis and Simulation Study of Micro-motion Performance of Ballistic Missile Targets

作　　者：高红卫[1] 谢良贵[2] 文树梁[1] 匡勇[1] 

机构地区：[1]中国航天科工集团二院二十三所,北京100854 [2]中国航天科工集团第二研究院,北京100854

出　　处：《系统仿真学报》2009年第4期954-957,961,共5页Journal of System Simulation

摘　　要：真假目标识别一直是反导系统中地基雷达(GBR)的技术难点,而基于弹道导弹目标微动特性的雷达识别是近来研究的热点。微多普勒是目标微动特性的一种表征,基于弹头和诱饵微动特性的差异,提取微多普勒特征可用于识别真假目标。首先介绍了弹头和诱饵的运动特性,然后建立了弹头和诱饵的微动模型,并进行了微多普勒理论分析和推导,最后通过仿真实验分别研究了微多普勒的多散射点和噪声污染的问题。仿真分析表明多点和噪声对微多普勒提取影响不大;同时指出以目标微多普勒的周期、频率最大值以及平面变化规律为特征可识别真假目标。The identification of warhead and decoys is all the while a technical difficulty of ground-based radar in anti- missile system, while radar identification based on micro-motion performance of ballistic missile targets recently becomes a research hotspot. Micro-Doppler is a kind of representation of target micro-motion performance, and based on differences of micro-motions of warhead and decoys, micro-Doppler signatures can be extracted for target identification. First, Motion performance of warhead and decoys was introduced and afterwards, the micro-motion models of the warhead and decoys were built, meanwhile, the theoretical analysis and derivation of the micro-Doppler were performed Finally, by means of simulation, the problems of multiple scatter points and noise pollution were researched. The simulation analyses show that the influences of multiple scatter points and noise pollution are small. Besides, the maximum of micro-Doppler frequency, period of micro-Doppler, and the plane character of micro-Doppler can be used as features to discriminate warhead and decoys.

关 键 词：弹道导弹 微动 微多普勒 雷达识别 

分 类 号：TN953[电子电信—信号与信息处理]