| 三维复杂目标求解的多层快速多极子方法 |
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| 引用本文： | 张宗斌,陈益邻,高正红.三维复杂目标求解的多层快速多极子方法[J].南京航空航天大学学报,2007,39(2):222-226. |
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| 作者姓名： | 张宗斌 陈益邻 高正红 |
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| 作者单位： | 1. 西北工业大学航空学院,西安,710072
2. 中国航空工业发展研究中心,北京,100012 |
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| 摘 要： | 采用多层快速多极子方法(Multilevel fast multipole algorithm,MLFMA)求解混合场积分方程(Combined field integral equation,CFIE),并选择RWG型基函数,对金属带缝锥球体、三面角反射器以及钻石体的单站RCS(Radar cross section)进行了计算,计算结果与试验吻合良好.在此基础上计算了F-22缩比模型的单站RCS,其计算量、存储量分别达到O(NlogN)量级和O(N)量级,此方法适用于带有尖点和特别细长曲面的三维复杂目标,如战斗机外形的RCS计算分析.
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| 关 键 词： | 电磁散射 混合场积分方程 多层快速多极子方法 雷达截面积 |
| 文章编号： | 1005-2615(2007)02-0222-05 |
| 修稿时间： | 2006-09-08 |
MLFMA for Solution of 3D Complex Object |
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| Zhang Zongbin,Chen Yilin,Gao Zhenghong.MLFMA for Solution of 3D Complex Object[J].Journal of Nanjing University of Aeronautics & Astronautics,2007,39(2):222-226. |
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| Authors: | Zhang Zongbin Chen Yilin Gao Zhenghong |
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| Abstract: | Multilevel fast multipole algorithm(MLFMA) is used to solute the combined field integral equation(CFIE) and the RWG basis function is chosen.The single station RCS(Radar cross section) of the cone-sphere with slot, 3-face angle reflector and the diamond shape model are calculated.The results are in agreement with experimental ones.Base on that,the single station RCS of the measured F-22 model is calculated.The scales of calculation and storage reach O(NlogN) and O(N).The method is suitable for calculating and analyzing RCS of the 3D complex object with the spire and slender surface,such as the shape of the fighter. |
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| Keywords: | electromagnetic scattering combined field integral equation(CFIE) multilevel fast multipole algorithm(MLFMA) radar cross section(RCS) |
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