基于远场模式的散射体形状成像  

Shape Reconstruction Based on Far Field Pattern

作　　者：钟卫军[1] 童创明[1] 赵玉磊[1] 黄国荣[2] 

机构地区：[1]空军工程大学导弹学院,陕西三原713800 [2]空军工程大学工程学院,陕西西安710038

出　　处：《上海航天》2009年第3期35-37,共3页Aerospace Shanghai

基　　金：毫米波国家重点试验室(K200818)

摘　　要：对线性抽样法的电磁场逆散射求解进行了研究。为避免迭代和优化法的正问题求解,用积分算子将散射物边界数据映射到散射场的远场模式,针对第一类积分方程的不适定性,用Tikhonov正则化法求解,并用高阶收敛算法确定正则化参数以快速数值实现。数值计算结果表明:线性抽样法+确定正则化参数的高阶收敛算法可较好地滤除噪声,减少了确定正则化参数的计算量。The inverse scattering problem was solved by the linear sampling method in this paper. To avoid the curve and solving direct scattering problem, the data on the boundary of the scatter was mapped to the far-field mode of the scattering field by integral functor. The Tikhonov＇s regular method was applied to linear ill-posed problems and the high order convergence algorithm was used to certain the regular parameter fast and exactly. The simulation results showed that the noise would he filtered by the linear sampling method and the high order convergence algorithm, which would reduce the computation in ascertaining regular parameter.

关 键 词：电磁逆散射 远场模式 正则化 形状重建 线性曲样化 

分 类 号：TN011[电子电信—物理电子学]