Fast solution of scattering from 3D coating object by MLFMA with diagonal element approximation method

Author

Hu Jun ; Zaiping, Nie ; Lei Lin ; Wang Jun ; Guangxian, Zou

Author_Institution

Coll. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China

Volume

4

fYear

2004

fDate

20-25 June 2004

Firstpage

4196

Abstract

The multilevel fast multipole algorithm (MLFMA), combined with the diagonal element approximation method, is used to realize a fast solution of scattering from a 3D coated object. The impedance boundary condition (IBC) is used to approximate the real boundary condition. MLFMA based on conjugate gradient iteration is applied to expedite greatly the field computations from electric current sources and magnetic current sources. The diagonal element approximation (DEA) method is used to achieve an efficient solution of the sparse matrix equation. Numerical results show the present method is efficient for solving scattering from a 3D coated object with arbitrary shape.

Keywords

approximation theory; coatings; conjugate gradient methods; electric current; electric impedance; electromagnetic wave scattering; sparse matrices; 3D coated object; MLFMA; arbitrary shape; conjugate gradient iteration; diagonal element approximation method; electric current sources; impedance boundary condition; magnetic current sources; multilevel fast multipole algorithm; real boundary condition; scattering; sparse matrix equation; Approximation methods; Boundary conditions; Coatings; Current; Equations; Impedance; MLFMA; Scattering; Shape; Sparse matrices;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2004. IEEE

Print_ISBN

0-7803-8302-8

Type

conf

DOI

10.1109/APS.2004.1330276

Filename

1330276