Journal of Systems Engineering and Electronics ›› 2009, Vol. 31 ›› Issue (3): 545-548.

• 传感器与信号处理 • 上一篇    下一篇

一种雷达穿墙成像算法

李述为1,2,3, 晏磊1, 杨绍文2, 高梅国3, 傅雄军3, 孙华波1   

  1. 1. 北京大学遥感与地理信息系统研究所, 北京, 100871;
    2. 贵州航空工业集团有限责任公司, 贵州, 贵阳, 550009;
    3. 北京理工大学电子工程系, 北京, 100081
  • 收稿日期:2007-12-10 修回日期:2008-05-12 出版日期:2009-03-20 发布日期:2010-01-03
  • 作者简介:李述为(1975- ),男,讲师,博士后,主要研究方向为激光雷达对地观测,雷达信号处理等.E-mail;lishuwei751103@163.com

Arithmetic of radar through-wall imaging

LI Shu-wei1,2,3, YAN Lei1, YANG Shao-wen2, GAO Mei-guo3, FU Xiong-jun3, SUN Hua-bo1   

  1. 1. Inst. of Remote Sensing and Geographic Information Systems, Peking Univ., Beijing 100871, China;
    2. Guizhou Aviation Industry Group Co., Ltd., Guiyang 550009, China;
    3. Dept. of Electronic Engineering, Beijing Inst. of Techology, Beijing 100081, China
  • Received:2007-12-10 Revised:2008-05-12 Online:2009-03-20 Published:2010-01-03

摘要: 构建了电磁波穿透绝缘介质墙的数学模型,解决了电磁波穿透墙壁过程中折射路径的问题,补偿了电磁波在墙体中传播产生的额外时间延迟,推导了步进频率信号穿墙后向投影算法,给出了算法实现流程。运用算法具体流程对介质墙存在时的非聚焦及聚焦成像结果进行了仿真。分析了墙壁厚度及介电常数变化时对成像结果的影响,验证了算法的有效性。

Abstract: A mathematic model of through-wall electromagnetic wave is constructed.The path of microwave penetrating wall is resolved.The extra time delay is compensated according to microwave passing through wall.The back projection method of through-wall stepped frequency signals is deduced.The arithmetic realization flow is also given.The imaging result is simulated according to the arithmetic flow,including both defocused and focused circumstance,and the influence of the thickness and dielectric constant of the wall is analyzed.The simulation result proves the efficiency of the arithmetic.

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