Application of Asymptotic Waveform Evaluation to Hybrid FE-BI-MLFMA for Fast RCS Computation Over a Frequency Band

The asymptotic waveform evaluation (AWE) technique has been widely used in the method of moment (MoM), the finite element method (FEM), and the hybrid finite element-boundary integral method (FE-BI) for fast computation over a wide frequency band. However, how to apply AWE to the multilevel fast mul...

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Vydané v:IEEE transactions on antennas and propagation Ročník 61; číslo 5; s. 2597 - 2604
Hlavní autori: Wu, Bi-Yi, Sheng, Xin-Qing
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: New York, NY IEEE 01.05.2013
Institute of Electrical and Electronics Engineers
Predmet:
Applied sciences
Asymptotic waveform evaluation (AWE) method
boundary-integral equations
Equations
Exact sciences and technology
Finite element analysis
finite-element methods
Mathematical model
Method of moments
pseudo spectral method
Radiolocalization and radionavigation
Scattering
Sparse matrices
Telecommunications
Telecommunications and information theory
Vectors
Performance evaluation
finite-element methods
Asymptotic waveform evaluation (AWE) method
Spectral method
Radar cross section
Moment method
Boundary integral method
boundary-integral equations
Numerical method
pseudo-spectral method
Finite element method
Frequency band
Wide band
Numerical simulation
Hybrid finite element
Fast algorithm
Multilevel system
Boundary integral equations
ISSN:0018-926X, 1558-2221
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Popis
Shrnutí:The asymptotic waveform evaluation (AWE) technique has been widely used in the method of moment (MoM), the finite element method (FEM), and the hybrid finite element-boundary integral method (FE-BI) for fast computation over a wide frequency band. However, how to apply AWE to the multilevel fast multipole algorithm (MLFMA) still remains challenge. This paper proposes an efficient and robust approach to apply AWE to the hybrid finite element-boundary integral-multilevel fast multipole algorithm (FE-BI-MLFMA). The validity of the proposed approach is verified by numerical examples for scattering problems. Numerical experiments show that the application of AWE to FE-BI-MLFMA can greatly improve the efficiency of FE-BI-MLFMA for computation of scattering over a wide frequency band.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2013.2246532