Electromagnetic scattering analysis with the reduced-order spectral-element time-domain method

Lixiang Ma; Zhenhong Fan; Huaguang Bao; Dazhi Ding

doi:10.1117/12.2664889

4 April 2023 Electromagnetic scattering analysis with the reduced-order spectral-element time-domain method

Lixiang Ma, Zhenhong Fan, Huaguang Bao, Dazhi Ding

Proceedings Volume 12617, Ninth Symposium on Novel Photoelectronic Detection Technology and Applications; 126172G (2023) https://doi.org/10.1117/12.2664889
Event: 9th Symposium on Novel Photoelectronic Detection Technology and Applications (NDTA 2022), 2022, Hefei, China

Abstract

The reduced-order spectral-element time-domain method based on the proper orthogonal decomposition method is proposed to solve the electromagnetic scattering problem based on wave equation. The spectral-element time-domain method has been proved to have the advantages of high precision and block-diagonal mass matrix, so it is widely used to solve the electromagnetic scattering problem. The POD basis is obtained by the eigenvalues and eigenvectors of the correlation matrix, which is created by the snapshot matrix whose columns are the snapshot vectors extracted from the SETD simulation. It is proved that the method can reduce the computational cost on the basis of maintaining an acceptable accuracy. Numerical results demonstrate the advantage of the reduced-order SETD method.

Citation Download Citation

Lixiang Ma, Zhenhong Fan, Huaguang Bao, and Dazhi Ding "Electromagnetic scattering analysis with the reduced-order spectral-element time-domain method", Proc. SPIE 12617, Ninth Symposium on Novel Photoelectronic Detection Technology and Applications, 126172G (4 April 2023); https://doi.org/10.1117/12.2664889

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