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Application of rational function approximation technique to hybrid FE/BI/MLFMA for 3D scattering
Author(s) -
Peng Zhen,
Sheng XinQing
Publication year - 2007
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.20250
Subject(s) - multipole expansion , radar cross section , rational function , function (biology) , microwave , scattering , microwave imaging , waveform , algorithm , computer science , computational physics , mathematical analysis , radar , physics , mathematics , optics , quantum mechanics , telecommunications , evolutionary biology , biology
In this article, the rational function approximation technique (RFAT) is applied to the hybrid finite‐element/boundary‐integral/multilevel fast multipole algorithm (FE/BI/MLFMA) to acquire wide‐band and wide‐angle backscatter radar‐cross‐section (RCS) by complex targets. The two approaches of using the rational function approximation technique, asymptotic waveform evaluation (AWE) and model‐based parameter estimation (MBPE), both have been investigated and compared by theoretical analysis and numerical experiments. The numerical results acquired by the developed computing algorithm of integrating the hybrid FE/BI/MLFMA with the RFAT are presented in the article, demonstrating that the rational function approximation technique can greatly speed up the hybrid FE/BI/MLFMA to acquire wide‐band and wide‐angle backscatter RCS by complex targets. © 2007 Wiley Periodicals, Inc. Int J RF and Microwave CAE, 2007.