[1]童创明,周后型,洪伟.AWE应用于介质柱宽带RCS频率响应的快速计算[J].东南大学学报(自然科学版),2001,31(1):11-14.[doi:10.3969/j.issn.1001-0505.2001.01.003]
 Tong Chuangming,Zhou Houxing,Hong Wei.A Fast Frequency Sweeping Method for RCS of Dielectric Cylinders Computation Based on AWE Technique[J].Journal of Southeast University (Natural Science Edition),2001,31(1):11-14.[doi:10.3969/j.issn.1001-0505.2001.01.003]
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AWE应用于介质柱宽带RCS频率响应的快速计算()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
31
期数:
2001年第1期
页码:
11-14
栏目:
数学、物理学、力学
出版日期:
2001-01-20

文章信息/Info

Title:
A Fast Frequency Sweeping Method for RCS of Dielectric Cylinders Computation Based on AWE Technique
作者:
童创明 周后型 洪伟
东南大学毫米波国家重点实验室, 南京 210096
Author(s):
Tong Chuangming Zhou Houxing Hong Wei
State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096)
关键词:
矩量法 渐近波形估计技术 雷达散射截面 快速扫频 二维介质柱
Keywords:
MOM AWE technique RCS fast frequency sweeping 2-D dielectric cylinder
分类号:
O242.24;TM15
DOI:
10.3969/j.issn.1001-0505.2001.01.003
摘要:
基于渐近波形估计(AWE)技术和矩量法(MOM)快速预测任意形状、非均匀介质柱体的雷达散射截面积(RCS)的宽带频率响应.首先采用矩量法求解介质柱的电场积分方程,得到介质柱体内在某一给定频率入射波照射下的极化电流,然后利用AWE技术将任一频率入射波照射下的极化电流在给定频率附近展开成Taylor级数,通过Pade逼近将Taylor级数转化为有理函数,由此可获得介质柱在任一频率入射波照射下的极化电流,进而计算出RCS.计算结果表明AWE基本能逼近MOM精确计算的曲线,同时在计算速度上可加快近10倍.
Abstract:
The method of moments (MOM) in conjunction with the asymptotic waveform evaluation (AWE) technique is applied to predict the radar cross section (RCS) of an arbitrarily shaped two-dimensional (2-D) dielectric cylinder over a frequency band. The electric field integral equation (EFIE) of a 2-D cylinder is solved using MOM to obtain the polarization current on the cylinder. In the AWE technique, the polarization current at a given frequency is expanded in the desired frequency band in a Taylor’s series. The Taylor’s series coefficients are then matched via the Pade approximation to a rational function. Using the rational function, the polarization current is obtained at any frequency within the frequency range, which is in turn used to calculate RCS of the 2-D cylinder. It is observed that AWE can result in considerable CPU time saving.

参考文献/References:

[1] Harrington R F.计算电磁场的矩量法.王尔杰等译.北京:国防工业出版社,1981.49~59
[2] Tang T K,Nakhla M S.Analysis of high-speed VLSI interconnects using the asymptotic waveform evaluation technique.IEEE Tran,CAD-S,1992(3):341~352
[3] Bracken J E,Sun D K,Cendes Z J.S-domain methods for simultaneous time and frequency characterization of electromagnetic devices.IEEE Tran MTT,1998(9):1277~1290
[4] Polstyanko S V,Romanus D E,Lee J F.Fast frequency sweep technique for the efficient analysis of dielectric wave-guides.IEEE Tran MTT,1997(6):1118~1126
[5] Reddy C J,Deshpande M D.Fast RCS computation over a frequency band using method of moments in conjunction with asymptotic waveform evaluation technique.IEEE Tran AP,1998(8):1229~1233
[6] Liang Jian,Hong Wei.S-parameter extraction of 3-D microwave structures by using 3D-FDFD method in conjunction with asymptotic waveform evaluation technique.IEEE AP-S,1999(6):1856~1859
[7] Erdemli Y E,Gong J,Reddy C J,et al.Fast RCS pattern fill using AWE technique.IEEE Tran AP,1998(11):1752~1753
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相似文献/References:

[1]洪伟,章文勋.矩量法的误差分析[J].东南大学学报(自然科学版),1985,15(3):23.[doi:10.3969/j.issn.1001-0505.1985.03.003]
 Hong Wei Zhang Wenxun.Error Analysis of Moment Method[J].Journal of Southeast University (Natural Science Edition),1985,15(1):23.[doi:10.3969/j.issn.1001-0505.1985.03.003]

备注/Memo

备注/Memo:
作者简介:童创明,男,1964年生,博士后,副教授.
基金项目:国家杰出青年基金的资助项目(69625102).
更新日期/Last Update: 2001-01-20