北京大学学报(自然科学版)

薄介质涂层导体柱散射的快速多极分析

张跃江, 陈红宇, 龚中麟   

  1. 北京大学电子学系微波实验室,北京,100871
  • 收稿日期:1999-03-01 出版日期:2000-01-20 发布日期:2000-01-20

Scattering by Dielectric-coated Cylinders Using Fast Multipole Algorithm

ZHANG Yaojiang, CHEN Hongyu, GONG Zhonglin   

  1. Department of Electronics, Peking University, Beijing, 100871
  • Received:1999-03-01 Online:2000-01-20 Published:2000-01-20

摘要: 将快速多极算法(FMA)与高阶阻抗边界条件(HOIBC)相结合,分析了有介质涂层的电大尺寸导体柱的雷达散射截面(RCS)。阻抗边界条件(IBC)的引入减少了计算区域,节省了内存,将只适于导体散射分析的FMA扩展到有涂层情况。并且由于使用HOIBC,保证了计算的精度。计算实例表明了本方法的有效性和可靠性。

关键词: 电磁散射, 涂层导体, 快速多极算法, 阻抗边界条件

Abstract: A new method, which combines the fast multipole algorithm(FMA) with high order impedance boundary condition(HOIBC), is proposed to analyze the radar cross section(RCS) of dielectric-coated cylinders. Comparing with conventional methods, this combination accelerates the computational speed and decreases the memory requirement. The effectiveness and reliability of the method are verified by numerical results.

Key words: radar cross section, dielectric-coated conductor, fast multipole algorithm, impedance boundary condition

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