基于MLFIPWA的复杂目标电磁散射分析  

Analysis of Electromagnetic Scattering from Complex Objects Based on MLFIPWA

作　　者：张宇[1] 卢雁[1] 梁波[1] 逯科[1] 

机构地区：[1]空军工程大学导弹学院,陕西三原713800

出　　处：《现代防御技术》2009年第4期81-84,共4页Modern Defence Technology

摘　　要：在积分方程法求解电磁散射中,用迭代方法计算的计算量为O(N^2)。快速非均匀平面波算法(FIPWA)加速了矩矢相乘,使数值计算量减小到O(N_(3/4))而用多层快速非均匀平面波算法(MLFIPWA)则可减小到O(NlnN)。可见,多层快速非均匀平面波算法(MLFIPWA)特别适合处理电大尺寸复杂目标的电磁散射分析。因此,就对这一算法的原理、数值实现及复杂度进行了详尽的研究,并给出了多层快速非均匀平面波算法(MLFIPWA)的计算实例验证了该方法的正确性及高效性。In solving electromagnetic scattering with integral equation, the computation complexity is O （N^2） when iterative method is adopted. The fast inhomogeneous plane wave algorithm （FIPWA） speeds up the matrix vector multiplication, which makes computation complexity reduce to O （N^3/4）. With the multilevel fast inhomogeneous plane wave algorithm （MLFIPWA） , it is further reduced to O （NlnN）. Therefore, the MLFIPWA is especially suitable to solve scattering from electrically large complex objects. The details on the theory and numerical implementations of the algorithm are provided, and the computational complexity is analyzed. Finally, the validity and high efficiency of this method has been proved by numeral results.

关 键 词：快速非均匀平面波算法 多层快速非均匀平面波算法 电磁散射 

分 类 号：TN011[电子电信—物理电子学] TP391.9[自动化与计算机技术—计算机应用技术]