FEM/PO-PTD for evaluation of scattering by complex objects

Author

Ding, Wei-ping

Author_Institution

Inst. of Commun. Eng., Nanjing, China

Volume

1

fYear

2004

fDate

20-25 June 2004

Firstpage

363

Abstract

A hybrid technique is developed for the evaluation of electromagnetic scattering by electrically large conducting bodies with cavities on their surfaces. The edge-based finite-element method (FEM) is employed to compute the scattering from the cavities. Physical optics (PO) and physical theory of diffraction (PTD) are utilized to evaluate the scattering from the large bodies with the cavities filled with perfect conductors. These two methods are combined by an efficient coupling scheme. Some numerical results are presented. It is shown that the hybrid technique has some advantages over other methods in regard to saving computer memory units and CPU time.

Keywords

computational electromagnetics; conducting bodies; electromagnetic wave scattering; finite element analysis; physical optics; physical theory of diffraction; radar cross-sections; CPU time; FEM; PO-PTD; RCS computation; computer memory units; coupling scheme; edge-based finite-element method; electrically large conducting bodies; electromagnetic scattering; perfect conductors; physical optics; physical theory of diffraction; Green´s function methods; Integral equations; Magnetic fields; Matrices; Optical computing; Optical scattering; Physical optics; Physics computing; Rayleigh scattering;

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.2004.1329649

Filename

1329649