基于折射角近似的穿墙成像墙体补偿方法  

Wall Compensation Method Based on Refraction Angle Approximation in Through-the-wall Radar Imaging

作　　者：贾勇[1] 陈胜亿 晏超 张伟 郭勇[1] JIA Yong;CHEN Shengyi;YAN Chao;ZHANG Wei;GUO Yong(College of Information Science & Technology, Chengdu University of Technology, Chengdu 610059, China;Science and Technology on Electronic Information Control Laboratory, Chengdu 610036 , China)

机构地区：[1]成都理工大学信息科学与技术学院,成都610059 [2]电子信息控制重点实验室,成都610036

出　　处：《现代雷达》2019年第5期12-15,共4页Modern Radar

基　　金：国家自然科学基金资助项目(41574136,61501062);国家级大学生创新创业训练计划资助项目(201810616086)

摘　　要：穿墙成像雷达探测中墙体穿透将导致目标图像散焦和位置偏移,墙体补偿是解决这一问题的关键。最短路径法是实现精确墙体补偿的典型算法,但存在运算量大的问题。为解决上述问题,提出了上述基于折射角近似的穿墙成像墙体补偿方法,其原理是利用折射角近似法得到大幅度缩短的最短路径法搜索区间,从而显著减小运算量。一方面,不同墙体参数的数值分析结果定量说明了减小运算量的程度;另一方面,MATLAB仿真结果证明了算法在有效减少计算量的同时实现了精确墙体补偿。In through-the-wall radar imaging, target images are defocused and displaced from their true positions because of wall penetration of electromagnetic wave, and wall compensation is the key to solve this problem. The shortest path method is a typical algorithm for precise wall compensation, but it has a huge computational burden. To solve the problem, a wall compensation meth? od based on refraction angle approximation in through-the-wall radar imaging is proposed. The searching region of the shortest path method is significantly shortened, and the calculation is greatly reduced by the proposed method. On the one hand, the amount of calculation is numerically analyzed under different wall parameters. On the other hand, MATLAB simulation demonstrates that the calculation is effectively reduced, and the precise wall compensation is accomplished.

关 键 词：穿墙成像雷达 折射角近似 最短路径法 墙体补偿 

分 类 号：TN957.51[电子电信—信号与信息处理]