弹道目标章动特性及其微多普勒研究  

A Study on Nutation Property of Ballistic Target and its Micro-Doppler

作　　者：孙照强[1] 李宝柱[1] 鲁耀兵[1] 

机构地区：[1]中国航天科工集团第二研究院二十三所,北京100854

出　　处：《现代雷达》2009年第4期24-27,共4页Modern Radar

摘　　要：章动是自旋弹道目标的一个典型运动特征。文中通过引入初始目标坐标系将摆动、自旋、锥旋3种运动叠加起来,建立了弹道目标章动的数学模型,分析了有翼弹道目标和无翼弹道目标章动特性对雷达回波调制的差异性,推导出了目标章动所产生的微多普勒理论结果,通过仿真实验给出了章动微多普勒的时频分析结果。证明了仿真结果和微多普勒理论结果一致性。Nutation is a typical motion feature of spinning ballistic targets. In this paper, a mathematical model of nutation for bal- listic missile is established by introduction of initial target coordinate system. The difference of echo modulations between ballistic targets with vanes and without vanes is analyzed and some theoretical result of micro-Doppler of nutation is deduced. The time-fre- quency analysis result is derived by simulation experiment, which confirms that the simulation result accords with theoretical one.

关 键 词：弹道导弹 章动 微多普勒 

分 类 号：TJ761.3[兵器科学与技术—武器系统与运用工程]