Title :
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
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;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2009. APSURSI '09. IEEE
Conference_Location :
Charleston, SC
Print_ISBN :
978-1-4244-3647-7
DOI :
10.1109/APS.2009.5171734
