基于阻抗边界条件建模的涂敷目标电磁散射分析  

Analysis of Electromagnetic Scattering for Coated Objects Using the Impedance Boundary Conditions

作　　者：李江海[1] 阙肖峰[2] 胡静伟[1] 聂在平[2] 

机构地区：[1]成都飞机设计研究所,成都610041 [2]电子科技大学电子工程学院,成都611731

出　　处：《微波学报》2015年第1期7-11,共5页Journal of Microwaves

基　　金：国家自然科学青年基金(61101035);中央高校基本科研业务费(ZYGX2012J011)

摘　　要：针对飞行器上常用的涂敷吸波材料结构开展电磁散射数值建模和散射特性分析。利用涂敷结构表面电磁场的阻抗边界条件,建立表面电流和表面磁流的新型积分方程形式,并利用快速算法进行求解。数值结果表明:该型积分方程在不增加额外计算量和存储量的条件下,显著改善了迭代求解收敛性,为复杂涂敷结构的电磁散射分析提供了快速、可靠的技术途径。In this paper,the electromagnetic modeling method and scattering properties for coated objects on aircrafts are analyzed.A new integral equation formulation is derived from the impedance boundary conditions of electromagnetic field on coated surface.The surface electric current and magnetic current are both imposed in the equations.Fast algorithm is used to accelerate the solution.Numerical examples show that the computation and memory requirement don't increase from the proposed formulations.The condition number of the impedance matrix and the iterative convergence are improved.The proposed integral equations provide a reliable and efficient way to the scattering analysis of the complex coated objects.

关 键 词：电磁散射 阻抗边界条件 涂敷目标 积分方程 

分 类 号：V250[一般工业技术—材料科学与工程]