Hybridizing physical optics with MLFMA for efficient scattering computations of three-dimensional complex targets
Author
Manyas, Alp
Ergül, Özgür
Gürel, Levent
Date
2009-07Source Title
Computational Electromagnetics International Workshop, CEM 2009
Publisher
IEEE
Pages
69 - 72
Language
English
Type
Conference PaperItem Usage Stats
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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.
Keywords
Approximation techniquesComplex 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