Analysis Of Scattering From Multi-Scale And Multiple Targets Using Characteristic Basis Function (Cbfm) And Integral Equation Discontinuous Galerkin (Iedg) Methods

Keywords

Characteristic basis function method (CBFM); electromagnetic scattering; integral equation discontinuous Galerkin (IEDG); method of moments (MoM); radar cross section (RCS)

Abstract

In this paper, the characteristic basis function method is adapted to analyze the problem of scattering from multiple and multi-scale impenetrable targets in conjunction with the discontinuous Galerkin method, and the monopolar RWG functions are chosen as the basis functions. This method enables us to analyze multiple and multi-scale targets using nonconforming discretizations. The use of the CBFs helps reduce the size of the impedance matrix of the associated method of moment significantly, enabling us to employ direct solvers as opposed to iterative solvers. The process of generating the reduced matrix is naturally parallel, and the reduced matrix is well conditioned, which obviates the need for pre-conditioning. In addition, the adaptive cross-approximation algorithm is implemented to reduce the complexity of the computation. Numerical results are included to demonstrate the accuracy and efficiency of the present approach when analyzing scattering from multiple and multi-scale targets using nonconforming discretizations.

Publication Date

7-3-2017

Publication Title

Journal of Electromagnetic Waves and Applications

Volume

31

Issue

10

Number of Pages

969-980

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1080/09205071.2017.1311237

Socpus ID

85019696927 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85019696927

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