基于多区迭代的多导体目标散射分析

多目标电磁散射在诸如雷达目标特性分析与识别、军用目标隐身与反隐身等实际工程中有着很强的研究价值.利用多区域迭代方法将原问题划分为若干个子域进行迭代求解,采用基于曲面RWG基函数的多层快速多极子方法计算各区域内的电流分布与区域间耦合.计算结果表明,利用该方法,在保证精度的前提下,能够很好地节省计算的存储量,对存储量的需求从O(NlogN)减为O(N<,max>logN<,max>),适合于多导体目标散射求解.

Electromagnetic scattering analysis of multipole conductor by multi-region iterative method

Electromagnetic scattering of multipole conductors is widely studied in engineering application requirement,such as analyzing and recognizing the characteristic of radar targets,the stealth and anti-stealth technology of military targets.A multi-region iterative method(MRI) based on multilevel fast multipole algorithms(MLFMA) with CRWG basis function is presented.This method is used to analysis the scattering of multipole conductor objects.This method can reduce memory requirement without losing the precision.The calculation complexity and memory requirement are reduced.The memory requirement is reduced from O(NlogN) to O(NmaxlogNmax),where N is the number of the total unknowns,Nmax is the max number of the unknowns of the sub-scatters.