基于HRRP的进动锥体目标特征参数求解方法  

Solution for characteristic parameters of precession cone-shaped target using HRRP

作　　者：宁超 黄璟 黄培康 

机构地区：[1]电磁散射重点实验室,北京100854

出　　处：《系统工程与电子技术》2014年第4期650-655,共6页Systems Engineering and Electronics

基　　金：国家重点基础研究发展计划(973计划)(2010CB731905)资助课题

摘　　要：提出了一种基于雷达高分辨距离像(high resolution range profile,HRRP)求解进动锥体目标微动参数与几何外形参数的新方法。首先通过对目标的电磁散射机理分析,建立了进动锥体HRRP径向长度的精确数学模型,得到了距离像长度与雷达观测角、进动角和目标特征尺寸之间的数学关系;然后在此基础上,推导了在变视角观测条件下利用HRRP长度求解锥体进动角的精确表达式;最后解算出锥体目标的高度、底面半径和推算雷达观测角等参数。仿真结果验证了本方法的正确性和有效性。A new solution to estimate the precession and structural parameters of a cone shaped target is proposed using high resolution range profile （HRRP）. Firstly, a mathematic model for estimation of the length of a cone-shaped target with micro motion from its HRRPs is developed based on the theory of electromagnetic scattering. Then, the formulas of the HRRPs length with the parameters including the radar sight angle, the precession angle, and the geometric parameters of a target are derived analytically. Using the HRRP lengths calculated from two different radar sight angles, a new solution to the precession angle estimation is suggested. Finally, the geometric parameters such as the height, the radius of the target can be obtained. Simulation resuhs validate the correctness and effectiveness of the proposed approach.

关 键 词：宽带雷达 微运动 雷达高分辨距离像 进动参数提取 

分 类 号：TN957.51[电子电信—信号与信息处理]