过墙壁探测:层状介质中二维层析成像模拟  

Through-the-wall detection:2-D tomographic simulation in stratified medium

作　　者：魏宝君[1] LIU Q H 

机构地区：[1]中国石油大学物理科学与技术学院 [2]Department of Electrical & Computer Engineering,Duke University,Durham,NC 27708,USA

出　　处：《中国石油大学学报（自然科学版）》2007年第3期49-53,58,共6页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：美国国家科学基金(CCR-0219528);中国石油大学博士科研基金(Y031807)

摘　　要：开发了一种基于对比源反演(CSI)算法的二维非线性逆散射技术,对层状介质中的二维物体进行层析成像并用其模拟过墙壁探测。对一些复杂模型的反演结果说明了CSI算法的有效性和进行过墙壁探测的可行性。数值模拟结果表明,在观测受到限制的情况下通过对多种频率的数据进行反演仍可以精确重构被探测目标的位置、形状及电参数。A 2-D nonlinear inverse scattering technique based on contrast source inversion （CSI） algorithm was developed for the tomography of 2-D objects in stratified medium, and the through-the-wall detection was simulated via the technique. The effectiveness of the CSI algorithm and the feasibility of through-the-wall detection were proven by the inversion results of some complicated models. Numerical simulation results show that the location, shape and electric parameters of the object may still be reconstructed accurately via inverting multi-frequency data under limited view of measurement.

关 键 词：对比源反演(CSI)算法 层状介质 层析成像 过墙壁探测 快速FOURIER变换 

分 类 号：O441.4[理学—电磁学]