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- W2785440309 abstract "An efficient low-rank based matrix algorithm is presented for the FEM-MoM method to analyze electromagnetic scattering from complex objects in half-space. A fast low-rank lower and upper (LU) triangular factorization algorithm is firstly developed to solve the inverse of FEM system matrix in FEM-MoM, which reduces the computational costs to be almost linear. A domain decomposition technique is employed to further accelerate the low-rank LU factorization. Then, a multilevel UV method is introduced to generate hierarchical low-rank representations for the MoM matrices, which accelerates the matrix-vector products of the MoM in FEM-MoM. Since the multilevel UV method is purely algebraic and kernel-independent, it is well suited for dealing with multi-scale objects and complex half-space Green's function. The proposed FEM-MoM method is completely based on low-rank matrix algorithm, which exhibits high computational accuracy and efficiency. Numerical example of electromagnetic scattering in lossy half-space demonstrates the effectiveness of the proposed method." @default.
- W2785440309 created "2018-02-23" @default.
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- W2785440309 date "2017-11-01" @default.
- W2785440309 modified "2023-09-25" @default.
- W2785440309 title "Low-rank based FEM-MoM method for analyzing electromagnetic scattering problems in half-space" @default.
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- W2785440309 doi "https://doi.org/10.1109/piers-fall.2017.8293502" @default.
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