| 电大尺寸散射体的RCS计算方法研究 |
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| 引用本文： | 刘战合,黄沛霖,高旭,周钧. 电大尺寸散射体的RCS计算方法研究[J]. 沈阳航空工业学院学报, 2007, 24(1): 21-24 |
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| 作者姓名： | 刘战合 黄沛霖 高旭 周钧 |
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| 作者单位： | 北京航空航天大学航空科学与工程学院,北京,100083 |
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| 摘 要： | 为了更加有效的求解电大目标散射计算问题,在避免谐振区效应情况下获得复杂目标的隐身雷达散射截面(RCS)特性,引用混合场积分方程(CFIE),在快速算法的求解迭代过程中采用共轭梯度算法(CG)的收敛技术,能够稳定的求解电大尺寸的RCS。计算和分析了金属球双站RCS和金属立方体双站RCS,并和精确计算、相关参考文献进行了比较,证明了方法的正确性,计算结果稳定,在工程实际上有较大的应用价值。
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| 关 键 词： | 多层快速多极子 雷达散射截面 混合场积分方程 共轭梯度算法 |
| 文章编号： | 1007-1385（2007）01-0021-03 |
| 收稿时间： | 2007-01-15 |
| 修稿时间： | 2007-01-15 |
Research on RCS computation method of large scattering object by MLFMA |
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| LIU Zhan-he,HUANG Pei-lin,GAO Xu,ZHOU Jun. Research on RCS computation method of large scattering object by MLFMA[J]. Journal of Shenyang Institute of Aeronautical Engineering, 2007, 24(1): 21-24 |
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| Authors: | LIU Zhan-he HUANG Pei-lin GAO Xu ZHOU Jun |
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| Affiliation: | School of Aeronautical Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083 |
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| Abstract: | Multilevel Fast Multipole Algorithm(MLFMA) was explained and used for computing the RCS scattering form large objects efficiently.This paper adopted Combined Field Integral Equation(CFIE) to avoid the effect of resonance region and get the complicated objects RCS characteristic.During the iterative solution procedure of fast algorithm,convergent technique of Conjugate Grads(CG) could be used to calculate the RCS of large objects stably.Compared with the exact calculation and reference,the result on the RCS of bi-state radar for metal globe and metal cube proves that this method is correct and its result is stable and it can be applied in the practical project. |
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| Keywords: | multilevel fast multipole algorithm Radar Cross Section combined field integral equation conjugate grads |
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