三维散射中心模型辅助的一维距离像要害部位选择  

Key Point Selection for High-resolution Range Profile Technology Based on Three-dimensional Scattering Center Model

作　　者：陈冀 吴宏铭 朱永锋[1] 周剑雄[1] CHEN Ji;WU Hongming;ZHU Yongfeng;ZHOU Jianxiong(College of Electronic Science and Engineering,National University of Defense Technology,Changsha,Hunan 410073,China;Rocket Force Base 61,Huangshan,Anhui 242700,China)

机构地区：[1]国防科技大学电子科学学院,湖南长沙410073 [2]火箭军61基地96813部队,安徽黄山242700

出　　处：《信号处理》2021年第9期1709-1718,共10页Journal of Signal Processing

摘　　要：不同于传统爆炸杀伤型武器,碰撞杀伤以其毁伤集中的优势正逐渐被应用于拦截、破甲等多个领域,而准确判定要害部位实现对于目标的有效毁伤打击有重要的意义。由于一维距离像具有姿态、强度及平移敏感性,仅基于距离像进行要害部位选择难以实现。本文提出一种三维散射中心模型辅助的一维距离像要害部位选择方法。通过获取目标三维散射中心的先验模型,结合要害部位三维位置实现三维向二维、二维向一维的图像投影,得到一维散射点序列模板。按照滑动最大匹配原则将目标散射点序列模板与待识别距离像匹配,此时一维散射点序列模板中要害部位所对应的距离像位置视为要害部位所在的实际位置。该方法运算复杂性小,便于实现,具有较强的实用意义,基于地面目标的电磁计算仿真数据说明算法有较好的要害部位选择性能且对角度偏移有适应性。Different from the traditional explosive weapon,collision kill is gradually used in many fields,such as interception,armor breaking and so on,because of its advantages of concentrated damage.In this paper,the problem of High-resolution Range Profile Technology is essentially based on the sliding maximum matching principe,and the best matching position between the template and the matching image is regarded as the location of actual attack target.In this paper,an attack point selection method for High-resolution Range Profile based on three-dimensional scattering center model is proposed.By obtaining the prior information of the three-dimensional structure of the target,and taking the SAR image as the precondition,the specific position of the target attack position in the two-dimensional image is determined by the three-dimensional model,and then the one-dimensional scattering point sequence is determined by projection.According to the sliding maximum matching principle,the range profile position corresponding to the strike point in the one-dimensional scattering point sequence template is regarded as the actual position of the attack position.This method has small computational complexity and is easy to implement,so it has strong practical significance.

关 键 词：合成孔径雷达 高分辨一维距离像 三维散射中心 要害部位选择 

分 类 号：TN951[电子电信—信号与信息处理]