弹道导弹目标微多普勒特征提取  

Micro-Doppler Feature Extraction 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]中国航天科工集团二院,北京100854

出　　处：《雷达科学与技术》2008年第2期96-101,共6页Radar Science and Technology

摘　　要：真假目标识别是弹道导弹防御系统的主要技术瓶颈之一,它在一定程度上决定了反导系统的成败。基于弹头和诱饵微动特性的差异,提取相应的微多普勒特征可用来识别真假目标。文中在介绍弹头和诱饵运动特性的基础上,引入了微多普勒概念,建立了弹头和诱饵的微动模型,并对其微多普勒进行了理论推导。通过仿真从雷达回波中提取出弹头和诱饵微多普勒的频谱特征和时频谱特征,从而为真假目标的识别提供了新的依据。The discrimination of warhead and decoys is one of the main technological bottlenecks in ballistic missile defense system, which means the success or failure of the anti missile system to some extent. Based on the differences of micro-motions, the corresponding micro-Doppler features can be extracted for the recognition of the real or false target. In this paper, the concepts concerned with micro-Doppler are introduced, the micro-motion models of the cone-shaped warhead and decoy are built, and the theoretical derivation of their micro-Doppler is also done. By simulation, the micro-Doppler features both in frequency spectrum and time-frequency spectrum are obtained from the radar echo, which can be used as a new basis for the discrimination of the real or false target.

关 键 词：弹道导弹 微动模型 微多普勒 目标识别 

分 类 号：TN959.17[电子电信—信号与信息处理]