分段Pad逼近法用于预测二维介质柱的单站RCS方向图

周后型; 洪伟; 许锋

分段Pad逼近法用于预测二维介质柱的单站RCS方向图

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出版历程
- 收稿日期: 2002-01-16
- 修回日期: 2002-06-10
- 刊出日期: 2003-07-19

Pad approximation in segments applied to predict monostatic rcs pattern of a 2D dielectric object

摘要

摘要: 矩量法与分段Pad逼近法结合用于预测任意形状截面二维介质柱的单站RCS方向图。该方法采用以总电场为未知函数的微积分方程。在矩量法过程中，用共轭梯度法和快速傅里叶变换(CG-FFT)的组合算法求解线性方程组，以便降低存储量和加快迭代速度。分段Pad逼近法用于加速获取单站RCS方向图。这里为分段Pad逼近法增添了一个自适应算法,克服了以往人工选择展开点位置的缺点，这种新的组合算法称为CG-FFT-PAIS算法。文中的数值算例证实了所述方法的有效性和实用性。
- 矩量法; 分段Pad逼近法; 雷达散射截面; 二维介质柱体
Abstract: The Method of Moment (MoM) in conjunction with Pade Approximation In Seg-ments (PAIS) is applied to predict the monostatic Radar Cross-Section (RCS) pattern of an arbitrarily shaped 2-D dielectric object. In the method, integro-differential equation for the total electric field is used. In MoM procedure, to reduce the need for computer memory and to speed up the iteration, a combined algorithm of conjugate gradient method and fast Fourier transform is used to solve the algebraic system. PAIS is used to accelerate the drawing of RCS pattern. PAIS here is equipped with a procedure for selecting expanding points, and so short-comings of original scheme of man-selecting location of expansion points are overcome. The new method is called CG-FFT-PAIS. Numerical results in this paper demonstrate the validity and the practicability of the method.

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T.K. Sarkar, E. Arvas, S. M. Rao, Application of FFT and the conjugate gradient method for the solution of electromagnetic radiation from electrically large and small conducting bodies[J],IEEE Trans. on AP., 1986, AP-34(5), 635-640.[2]S.V. Polstyanko, D. E. Romanus, J. F. Lee, Fast frequency sweep technique for the efficient analysis of dielectric wave-guide [J], IEEE Trans. on MTT, 1997, MTT-45(7), 1118-1126.[3]C.J. Reddy, M. D. Deshpande, Fast RCS computation over a frequency band using method of moments in conjunction with asymptotic waveform evaluation technique[J], IEEE Trans. on AP,1998, AP-46(8), 1229-1233.[4]Y.E. Erdemli, J. Gong, C. J. Reddy, et al., Fast RCS pattern fill using AWE technique[J], IEEE Trans. on AP, 1998, AP-46(11), 1752-1753.[5]童创明,洪伟,AWE应用于介质柱宽角度RCS响应的快速获取[J],电子学报,2001,29(9),1198-1201.[6]R. Sanaie, E. Chiprout, M. S. Nakhla, Qi-jun Zhang, A Fast method for frequency and time domain simultation of high-speed VLSI interconnects[J], IEEE Trans. on MTT, 1994, MTT-42(12), 2563-2571.[7]周后型,童创明,洪伟,预条件共轭梯度法在线天线阵列RCS分析中的应用[J],应用科学学报,2001,19(2),145-148.[8]王仁宏,数值有理逼近[M],上海,上海科技出版社,1980,101-128.[9]J.H. Richmond, Scattering by a dielectric cylinder of arbitrary cross section shape[J], IEEE Trans. on AP, 1965, AP-13(5), 334-341.[10]J. H. Richmond, TE-wave scattering by a dielectric cylinder of arbitrary cross section shape[J],IEEE Trans. on AP, 1966, AP-14(4), 460-464.

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