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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。
Based on the integral equation of the electromagnetic field, the electromagnetic scattering of the conductor column was calculated by using the FMM (acceleration moment method) method. Taking the mean deviation between the measured value and the calculated value of the scattering field as the objective function, The cross-sectional shape parameters are optimized variables, and the genetic algorithm (GA) is used to optimize the iteration to reconstruct the electromagnetic images of the target conductor. Electromagnetic imaging of the actual measurement data (Ipswich data) provided by the U.S. Air Force’s ROME laboratory; and examples of electromagnetic imaging of larger conductor columns are given.