Optimum choice of currents´ expansion order in MLFMM algorithm for electromagnetic scattering

Author

Kolundzija, Branko M. ; Pavlovic, Milos S. ; Mrdako, Branko

Author_Institution

WIPL-D d.o.o., Belgrade, Serbia

fYear

2009

fDate

1-5 June 2009

Firstpage

1

Lastpage

4

Abstract

The goal of this paper is to investigate how accuracy and efficiency of MLFMM of a given level depends on the order of approximation. We performed this investigation using a corner scatterer of side 20 lambda as a benchmark. We chose this model because its RCS results show several distinctive lobes in specific directions and at different levels, calculation of which is challenging even for direct MoM. Selected results are presented indicating the optimal choice of simulation parameters.

Keywords

approximation theory; electromagnetic wave scattering; iterative methods; method of moments; radar cross-sections; radar theory; MLFMM algorithm; RCS results; approximation order; current expansion order; direct MoM method; electromagnetic wave scattering; higher-order method of moments; iterative method; multilevel fast multipole method; optimal simulation parameter choice; radar cross-section; Apertures; Brain modeling; Electromagnetic scattering; Moment methods; Numerical models; Numerical stability; Polarization; Scattering parameters; Workstations;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2009. APSURSI '09. IEEE

Conference_Location

Charleston, SC

ISSN

1522-3965

Print_ISBN

978-1-4244-3647-7

Type

conf

DOI

10.1109/APS.2009.5171734

Filename

5171734