摘要
从电磁场的积分方程出发 ,利用快速多极子 (FMM)加速矩量法 (Mo M)计算导体柱电磁散射的过程 ;以散射场的测量值与计算值的平均偏差为目标函数 ,以导体柱截面形状参数为优化变量 ,利用遗传算法 (GA)进行优化迭代 ,来重构目标导体柱的电磁影像。对美国空军 ROME实验室提供的实际测量数据 (Ipswich数据 )进行了电磁成像 ;并给出了对较大导体柱电磁成像的例子。
A numerical method of the reconstruction of conductor cylinders is presented. The forward scattering problem is analyzed by using the fast multipole method (FMM). And the inverse problem is solved by the genetic algorithm (GA). The objective function is constructed in terms of the average of difference between the computed scattering files and the measured fields. Optimum variants set as the shape parameters of the conductor cylinders. Several reconstruction examples of conducting cylinders are presented, including the one based on measured Ipswish and a large problem.
出处
《电波科学学报》
EI
CSCD
2000年第3期347-351,共5页
Chinese Journal of Radio Science
关键词
遗传算法
矩量法
快速多极子
电磁成像
genetic algorithm
method of moment
fast multipole method
electromagnetic imaging
