A well-conditioned multilevel directional simply sparse method for analysis of electromagnetic problems

作者：Jiang, Zhaoneng; Qiao, Xuguang; Yin, Wenfei^*; Zhao, Xiaoyan; Xuan, Xiaofeng; Wan, Ting

来源：Engineering Analysis with Boundary Elements, 2019, 99: 244-247.

DOI：10.1016/j.enganabound.2018.11.015

• Multilevel directional simply sparse method (MLDSSM)
• Well-conditioned electric field integral equation (WEFIE)
• Directional grouping scheme

To efficiently analyze electromagnetic scattering of electrically-large complex objects, a novel version of multilevel directional simply sparse method (MLDSSM) based on well-conditioned electric field integral equation (WEFIE) is proposed in this paper. When the complex target is analyzed, the condition number of impedance matrix of electric field integral equation (EFIE) is very poor. In this paper, the WEFIE is applied to improve the convergence property of EFIE. Meanwhile, an efficient version of MLSSM algorithm based on directional grouping scheme is applied to further accelerate the matrix-vector multiplication. Numerical results of differently shaped objects were presented to show the efficiency of the proposed method.

• 出版日期2019-2
• 单位南京邮电大学; 合肥工业大学