| 引用本文: | 董健,柴舜连,毛钧杰.结合多层快速多极和ILUT预处理算法分析复杂目标的电磁特性.[J].国防科技大学学报,2005,27(6):82-87.[点击复制] |
| DONG Jian,CHAI Shunlian,MAO Junjie.Combining MLFMM and ILUT Preconditioner for Analysing Electromagnetism Characteristic of the Large Complex Target[J].Journal of National University of Defense Technology,2005,27(6):82-87[点击复制] |
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| 结合多层快速多极和ILUT预处理算法分析复杂目标的电磁特性 |
| 董健, 柴舜连, 毛钧杰 |
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(国防科技大学 电子科学与工程学院，湖南 长沙 410073)
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| 摘要: |
| 分层快速多极算法(MLFMM)和ILUT预处理算法被结合来分析电大尺寸目标的电磁散射和辐射特性。采用矩量法求解电磁场积分方程，最终须要求解一线性方程组。分层快速多极算法被用来加速用迭代法求解线性方程组时的矩阵向量乘积的运算。ILUT预处理算法被用来降低方程组系数矩阵的条件数，加快迭代法的收敛速度。计算实例表明了该方法的通用性和高效性。 |
| 关键词: 积分方程 矩量法(MOM) 分层快速多极算法(MLFMM) ILUT预处理 |
| DOI： |
| 投稿日期：2004-12-10 |
| 基金项目: |
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| Combining MLFMM and ILUT Preconditioner for Analysing Electromagnetism Characteristic of the Large Complex Target |
| DONG Jian, CHAI Shunlian, MAO Junjie |
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(College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073,China)
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| Abstract: |
| Electromagnetism characteristics of large complex target are analysed by combining multilevel fast multipole method and ILUT preconditioner. We must solve a linear system when solving electromagnetic integral equation by moment method. Multilevel fast multipole method is used to fast calculate the matrix-vector product when we solve the linear system by iterative method. ILUT preconditioner is used to reduce the prove condition number on the linear system and speed up the convergence iterative method. Numerical experiments show the robustness of our method. |
| Keywords: integral equation moment method MLFMM ILUT preconditioner |
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