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| 目标宽带电磁散射特性的自适应分析 |
| 杜红梅1,陈明生2,吴先良1 2 |
1. 安徽大学计算智能与信号处理教育部重点实验室, 合肥 230039;
2. 合肥师范学院物理与电子工程系, 合肥 230601 |
| Adaptive scattering analysis of objects over a broad frequency band |
| Du Hong-Mei1,Chen Ming-Sheng2,Wu Xian-Liang1 2 |
1. Key Lab of Intelligent Computing & Signal Processing, Anhui University, Ministry of Education, Hefei 230039, China;
2. Department of Physics and Electronic Engineering, Hefei Normal University, Hefei 230601, China |
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摘要： 本文采用有理逼近中的误差分析方法, 对渐近波形估计的计算结果进行了误差分析, 从而提出了一种有效计算带宽的估计方法, 并构造了一种任意给定频段自适应扫频计算方法. 通过对不同几何形态的三维导体目标、色散介质目标的宽带电磁散射特性进行分析, 并将计算结果与解析解、矩量法逐点计算进行了比较, 验证了此算法的有效性.
关键词：
渐近波形估计
误差分析
自适应扫频分析
色散介质目标
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Abstract： The error of asymptotic waveform evaluation (AWE) is estimated by the error analysis of rational approximation, and an efficient bandwidth estimation approach is finally proposed, which is used to form a new adaptive frequency-sweep analysis algorithm for a given frequency band in this paper. The broadband electromagnetic scattering analysis of three-dimensional (3-D) perfectly electrically conducting (PEC) objects with different shapes is performed, and dispersive dielectric object is considered. The effectiveness of the proposed method is proved by comparing the numerical results with those obtained from the analytical solution and the direct solution.
Keywords：
asymptotic waveform evaluation
error analysis
adaptive frequency-sweep analysis
dispersive dielectric object
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收稿日期: 2011-06-29
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| PACS: |
72.20.Dp
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(General theory, scattering mechanisms)
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71.15.Dx
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(Computational methodology (Brillouin zone sampling, iterative diagonalization, pseudopotential construction))
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92.60.Ta
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(Electromagnetic wave propagation)
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02.60.-x
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(Numerical approximation and analysis)
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| 基金: 国家自然科学基金重点项目(批准号: 60931002), 国家自然科学基金(批准号: 61001033), 安徽高校省级自然科学研究重点项目(KJ2011A240) 和安徽省优秀青年基金(批准号: 10040606Y08)资助的课题. |
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2012, Vol. 61 
