APPLICATION OF FFT AND THE CONJUGATE GRADIENT METHOD FOR THE SOLUTION OF ELECTROMAGNETIC SCATTERING FROM ELECTRICALLY LARGE AND SMALL CONDUCTING BODIES.

Tapan Kumar Sarkar, Ercument Arvas, Sadasiva M. Rao

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents a combination of the conjugate gradient method and the fast Fourier transform technique. With this combination, the computational time required to solve large scatterer problems is much less than the time required by the ordinary conjugate gradient method and the method of moments. Since the spatial derivatives are placed with simple multiplications in the transformed domain some of the computational difficulties present in the ordinary conjugate gradient method and the method of moments do not exist. Therefore, electrically small structures can also be handled more easily. Since the method is iterative, it is possible to know the accuracy in a problem solution.

Original languageEnglish (US)
Title of host publicationStudies in Electrical and Electronic Engineering
EditorsT. Berceli
PublisherElsevier
Pages111-113
Number of pages3
ISBN (Print)0444989862
StatePublished - 1986

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ASJC Scopus subject areas

  • Engineering(all)

Cite this

Sarkar, T. K., Arvas, E., & Rao, S. M. (1986). APPLICATION OF FFT AND THE CONJUGATE GRADIENT METHOD FOR THE SOLUTION OF ELECTROMAGNETIC SCATTERING FROM ELECTRICALLY LARGE AND SMALL CONDUCTING BODIES. In T. Berceli (Ed.), Studies in Electrical and Electronic Engineering (pp. 111-113). Elsevier.