Parallel computation of time-domain integral equation analyses of electromagnetic scattering and RCS

Author

Walker, S.P. ; Leung, C.Y.

Author_Institution

Dept. of Mech. Eng., Imperial Coll. of Sci., Technol. & Med., London, UK

Volume

45

Issue

4

fYear

1997

fDate

4/1/1997 12:00:00 AM

Firstpage

614

Lastpage

619

Abstract

Electromagnetic scattering analyses for radar cross-section (RCS) prediction present very large computational demands. Processing on parallel machines will contribute to increasing the size of problem tractable. We present a parallel implementation of the time-domain integral equation method. The issues and options in its parallelization are identified, and domain decomposition strategies to suit these are implemented. Good parallelization is exhibited, with the most costly parts of the algorithm displaying essentially linear speedup. Demonstrations using the Cray T3D are given with, for example, results on the ~12 wavelength NASA almond obtained in ~30 min per illumination angle, using 256 processors

Keywords

electrical engineering; electrical engineering computing; electromagnetic wave scattering; integral equations; parallel algorithms; parallel machines; radar cross-sections; time-domain analysis; transient analysis; Cray T3D; NASA almond; RCS; algorithm; domain decomposition; electromagnetic scattering; illumination angle; linear speedup; matrix solution; parallel computation; parallel implementation; parallel machines; parallel processing; time-domain integral equation method; transient EM wave equation; Concurrent computing; Costs; Dielectric losses; Electromagnetic analysis; Electromagnetic scattering; History; Integral equations; Radar cross section; Radar scattering; Time domain analysis;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.564087

Filename

564087