A conjugate gradient algorithm for the treatment of multiple incident electromagnetic fields

Author

Smith, Charles F. ; Peterson, Andrew F. ; Mittra, Raj

Author_Institution

US Air Force Syst. Command, Los Angeles Air Force Station, CA, USA

Volume

37

Issue

11

fYear

1989

fDate

11/1/1989 12:00:00 AM

Firstpage

1490

Lastpage

1493

Abstract

An iterative method based on the conjugate gradient (CG) algorithm is developed for the efficient treatment of equations involving multiple excitations. Examples show that significant time savings can be obtained as compared to treating each excitation individually with the conjugate gradient algorithm. However, these savings are not obtained without the drawback of increased memory requirements to store the additional excitations, residuals, and solutions. The efficiency of this algorithm tends to increase as additional excitations are added

Keywords

electromagnetic wave scattering; iterative methods; conjugate gradient algorithm; electromagnetic wave scattering; iterative method; memory requirements; multiple incident electromagnetic fields; residuals; solutions; Bistatic radar; Character generation; Dielectrics; Electromagnetic fields; Electromagnetic scattering; Integral equations; Iterative algorithms; Iterative methods; Radar scattering; Sparse matrices;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.43571

Filename

43571