Hybridizing physical optics with MLFMA for efficient scattering computations of three-dimensional complex targets

Date
2009-07
Advisor
Instructor
Source Title
Computational Electromagnetics International Workshop, CEM 2009
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Electronic ISSN
Publisher
IEEE
Volume
Issue
Pages
69 - 72
Language
English
Type
Conference Paper
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Journal ISSN
Volume Title
Abstract

The multilevel fast multipole algorithm (MLFMA) provides accurate and efficient solutions of electromagnetic scattering problems involving large and complicated structures. On the other hand, whenever applicable, accelerations provided by approximation techniques can be useful to further improve the efficiency of solutions. In this paper, we present a hybrid technique, which combines the physical-optics (PO) method and MLFMA for efficient scattering computations of three-dimensional objects. We show that, with a careful choice of MLFMA and PO regions on the structure, the number of unknowns can be reduced and solutions can be accelerated significantly, without sacrificing the accuracy. The proposed hybrid technique is easy to implement by modifying existing MLFMA codes. ©2009 IEEE.

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Keywords
Approximation techniques, Complex targets, Complicated structures, Electromagnetic scattering problem, Hybrid techniques, Multilevel fast multipole algorithms, PO region, Three-dimensional object, Electromagnetic wave scattering, Electromagnetism, Three dimensional, Computational efficiency
Citation
Published Version (Please cite this version)