| 曲面共形阵列结构快速数值分析方法 |
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| 引用本文： | 徐延林,李振,黄贤俊.曲面共形阵列结构快速数值分析方法[J].电波科学学报,2020,35(4):515-522. |
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| 作者姓名： | 徐延林 李振 黄贤俊 |
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| 作者单位： | 国防科技大学电子科学学院, 长沙 410073 |
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| 基金项目： | 国家自然科学基金61801490国防科技大学科研计划ZL18-03-15 |
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| 摘 要： | 针对曲面共形阵列结构电磁散射特性的高效、精确仿真分析需求，提出了一种并行综合函数矩量法处理方案.该方法是传统电磁经典数值算法——矩量法的一种改进形式，通过几何区域分解处理和综合基函数的方式极大降低了算法的内存消耗，使得单机分析电大尺寸问题和大规模阵列问题成为可能.更为重要的是，针对周期阵列结构，该方法具备综合函数复用特性和多区域并行处理特性，能够大大提高算法的综合处理效率.一个6×11的柱面共形贴片阵列被用于验证所提方法的性能，仿真结果表明，对于周期阵列结构，该方法的计算精度与多层快速多极子算法相当，虽然计算效率略低于多层快速多极子方法，但内存消耗比多层快速多极子方法低一个数量级.
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| 关 键 词： | 曲面共形阵列 散射特性 综合函数矩量法 区域分解 综合函数复用机制 并行处理机制 |
| 收稿时间： | 2020-02-20 |
Efficient numerical analysis of curved conformal array |
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| Affiliation: | College of Electronic Science and Technology, National University of Defense Technology, Changsha 410073, China |
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| Abstract: | A parallel synthetic basis functions method (SBFM) is proposed for the efficient and accurate scattering analysis of curved conformal array. SBFM is an improved approach of classical method of moment (MoM). Based on geometric domain decomposition and synthetic basis functions, SBFM decreases the memory cost sharply which makes it possible to analyze large scale electromagnetic problems in a single PC. More importantly, for periodic structures, SBFM can achieve a rather efficient state which mainly attributes to: 1) synthetic functions constructed for one element can also be reused for others; 2) different decomposition parts can be simultaneously addressed in a parallel way. Finally, a 6×11 cylindrical patch array is used to validate the proposed approach, and the results show that, parallel SBFM can achieve the same level of accuracy with multilevel fast multipole algorithm(MLFMA). Besides, though efficiency of the proposed approach is slightly lower than MLFMA, memory cost of the proposed approach can be reduced in an order compared to MLFMA. |
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