玻恩近似下的无相位检测电磁成像方法  

EM inverse scattering from phaseless data of total field under Born approximation

作　　者：郑虎[1,2] 李廉林[1] 李芳[1] 

机构地区：[1]中国科学院电子学研究所,北京100080 [2]中国科学院研究生院,北京100049

出　　处：《电波科学学报》2008年第4期669-673,共5页Chinese Journal of Radio Science

基　　金：国家自然科学基金资助项目(60701010,40774093)

摘　　要：提出玻恩近似下用无相位检测数据重建复目标的方法。由电场积分方程推导散射场的实部和虚部之间的关系;在玻恩近似下基于散射场实部虚部关系,利用优化算法由无相位电磁检测数据反演目标散射场的实部和虚部;最后利用标准玻恩反演法对目标进行成像。数值实验显示该方法能有效地对弱散射目标成像。A new reconstruction algorithm for the object of complex permittivity from phaseless data is presented under Born approximation. The key of the algorithm is to find the relationship between the real and imaginary part of the scattered electrical field from electric field integral equation. Based on their relationship and optimization procedure, the real part and imaginary part of scattered field can be recovered from phaseless data under Born approximation. Then the object＇s complex permittivity profile can be reconstructed using standard Born inversion method. The numerical testing shows that the algorithm works effectively.

关 键 词：电磁逆散射 无相位电磁检测 玻恩近似 

分 类 号：TN011[电子电信—物理电子学]