[1]许锋,洪伟.Pade插值结合FDTD法应用于宽角度RCS的快速获取[J].东南大学学报(自然科学版),2002,32(1):42-45.[doi:10.3969/j.issn.1001-0505.2002.01.010]
 Xu Feng,Hong Wei.Fast calculation of wide angle mono-static RCS of a 2-D cylinder using the FDTD method and the Pade interpolation technique[J].Journal of Southeast University (Natural Science Edition),2002,32(1):42-45.[doi:10.3969/j.issn.1001-0505.2002.01.010]
点击复制

Pade插值结合FDTD法应用于宽角度RCS的快速获取()
分享到:

《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
32
期数:
2002年第1期
页码:
42-45
栏目:
电磁场与微波技术
出版日期:
2002-01-20

文章信息/Info

Title:
Fast calculation of wide angle mono-static RCS of a 2-D cylinder using the FDTD method and the Pade interpolation technique
作者:
许锋 洪伟
东南大学国家毫米波重点实验室,南京 210096
Author(s):
Xu Feng Hong Wei
State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China
关键词:
时域有限差分法 Pade逼近 雷达散射截面 最小二乘法
Keywords:
FDTD Pade interpolation RCS least square method
分类号:
TN011
DOI:
10.3969/j.issn.1001-0505.2002.01.010
摘要:
引入Pade插值技术,对FDTD法计算的稀疏的RCS响应进行逼近,然后用获得的Pade有理逼近式计算宽角度RCS响应.文中采用了最小二乘法,进行全局约束,以充分利用已有信息,达到最佳逼近的效果.计算结果表明,Pade有理逼近式能很好地逼近FDTD法精确计算的曲线,同时在计算速度上可加快几倍.
Abstract:
The Pade interpolation technique is employed to obtain wide-angle results with satisfactory accuracy. By using RCS results at some angles calculated by FDTD method, the rational function of RCS pattern can be achieved. Then the wide-angle RCS pattern can be calculated by use of the rational function. The least square method is adopted to make use of the RCS results from FDTD method. The wide-angle RCS results computed by use of the Pade interpolation technique are compared with the conventional FDTD results. A good agreement is obtained while with the new method the calculation speed is much faster.

参考文献/References:

[1] Umashankar K,Taflove A.A novel method to analyze electromagnetic scattering of complex objects [J].IEEE Trans Electromagnetic Compatibility,1982,EMC-24(4):397-405.
[2] Taflove A,Umashankar K.Radar cross section of general three-dimension scatters [J].IEEE Trans Electromagnetic Compatibility,1983,EMC-25(4):433-440.
[3] Erdemli Y E,Reddy C J,Volakis J L.AWE technique in frequency domain electromagnetics [J].Journal of Electromagnetic Waves and Applications,1999,13(3):359-378.
[4] Supriyo D,Mittra R.Efficient computation of resonant frequencies and quality factors of cavities via a combination of the finite-difference time-domain technique and the Pade approximation [J].IEEE Microwave and Guided Wave Letters,1998,8(12):415-417.
[5] Zhe-wang M A,Kobayashi Yoshio.Analysis of dielectric resonators using the FDTD method combined with the Pade interpolation technique[A].In: Asia-Pacific Microwave Conference Proceedings[C].APMC,1999.401-404.
[6] Yee K S,Ingham D,Shlager K.Time-domain extrapolation to the far field based on FDTD calculations[J].IEEE Trans AP,1991,39(4):429-433.
[7] Luebbers R J,Ryan Deirdre,Beggs John.A two-dimensional time-domain near-zone to far-zone transformation[J]. IEEE Trans AP,1992, 40(7):848-851.
[8] Gonzalez S,Garcia B,Garcia Olmedo R,et al.A time-domain near to far field transformation for FDTD in two dimensions [J].Microwave and Optical Technology Letters, 2000,27(6):427-432.
[9] Zhou Tingdong,Dvorak S L,Prince J L.Application of the Pade approximation via Lanczos(PVL)algorithm to electromagnetic systems with expansion at infinity[A].In:Electronic Components and Technology Conference IEEE [C].Las Vegas,NV,USA,2000.1515-1520.
[10] Cangellaris A C,Zhao L.Rapid FDTD analysis of shielding enclosures[A].In:IEEE International Symposium on Electromagnetic Compatibility [C].Seattle,WA,USA,1999.827-831.
[11] Slone R D,Lee R.Applying Pade via Lanczos to the finite element method for electromagnetic radiation problems[J].Radio Science,1998,35(2):331-340.

备注/Memo

备注/Memo:
作者简介: 许锋(1963—),男,博士生; 洪伟(联系人), 男, 博士, 教授, 博士生导师, weihong@seu.edu.cn.
更新日期/Last Update: 2002-01-20