基于宽带雷达的弹道目标微动分析

Micro-motion Analysis of Balistic Target Based on Wide-band Radar

微动是目标运动的本质属性之一,在目标运动特性中具有唯一性,但在弹道目标识别系统中鲜有使用,其理论研究与工程应用存在一定的差距。文中建立了锥体目标的进动回波模型,据此推导了微多普勒调制模型,通过仿真数据进行了验证和分析。利用宽带雷达测量数据对锥体和圆柱目标进行了进动和翻滚特性研究。结果表明,在导弹飞行中段能够观测到弹道目标的微动现象,实践中该现象为构建基于微动特征的目标识别系统奠定了基础。

Micro-motion is one of the inherent characteristics of ballistic target, which is generally unique. But its application is far behind the academic research, and it is rarely utilized in the target identification system at present. Model of cone＇s spinning-precession target echo and micro-Doppler were established, and which were validated and analyzed by simulation. Using wide-band radar data, the spinning-precession feature of the cone-target and the roll feature of the cylinder-target were studied. The results show that the micro-motion of the ballistic target could be observed in the midcourse of the flight, which could be used in the target identification system.