介质涂敷电大腔体电磁散射IPO研究

何小祥; 徐金平; 顾长青

介质涂敷电大腔体电磁散射IPO研究

何小祥^{①;徐金平},
徐金平,
顾长青

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出版历程
- 收稿日期: 2003-08-28
- 修回日期: 2004-01-12
- 刊出日期: 2005-01-19

IPO for Analysis of EM Scattering by Dielectric Coated Electrically Large Cavities

摘要

摘要: 将迭代物理光学法(IPO)推广应用于研究具有非完纯导电边界的电磁散射问题,建立了相应的理论模型,并应用到内壁涂敷介质的电大尺寸腔体的电磁散射特性分析中。在每一次IPO迭代步骤中,应用Fresnel反射系数计算出介质表面总场。通过多次迭代,求出腔体内壁上稳定的电磁场分布,进而计算出腔体的电磁散射特性。数值结果表明了这种扩展的IPO方法的在分析电大尺寸介质涂敷目标中的正确性和高效性。
- 迭代物理光学; Fresnel反射系数; 介质涂敷腔体
Abstract: A theoretical model of Iterative Physical Optics (IPO) is established for the ElectroMagnetic (EM) scattering problem with imperfectly conducting boundaiy and applied to the analysis of EM scattering by a dielectric coated electrically large cavity. In each IPO iteration step, the total field on the dielectric surface is computed utilizing the Fresnel reflection coefficient. By employing iteration process, the EM field distribution on the inner wall of the cavity is predicted and then the scattering fields of the cavity are obtained. Numerical results demonstrate that the improved IPO algorithm is correct and effective for the analysis of dielectric coated electrically large targets.

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王树民,李明之,王长清.GRE-FDTD混合法对二维矩形终端任意形状进气道RCS的计算.电子学报,2000,28(6):138-141.[2]Robert Lee, Tsc-Tong Chia. Analysis of electromagnetic scattering from a cavity with a complex termination by means of a hybrid ray-FDTD method. IEEE Trans. on AP, 1993, AP-1 (11): 1560 - 1569.[3]Tsc-Tong Chia, Robert J. Burkholder, Robert Lee. The application of FDTD in hybrid methods for cavity scattering analysis. IEEE Trans. on AP, 1995, AP-43(10): 1082 - 1089.[4]何小祥,徐金平,顾长青.电大尺寸复杂结构腔体电磁散射的IPO/FEM混合法研究[J].电子与信息学报.2003,25(2):247-253浏览[5]顾长青,王璟.IPO-FDTD混合法计算三维复杂腔体的RCS.电波科学学报,2003,1 8(4):385-388.[6]Ling Hao, Lee Shung-wu, Chou Ri-chee. High frequency RCS of open cavities with rectangular and circular cross section. IEEE Trans. on AP, 1989, AP-37(5): 648 - 654.[7]Obelleiro F, Rodriguez J L, Burkholder R J. An iterative physical optics approach for analyzing the electromagnetic scattering by large open-ended cavities. IEEE Trans. on AP, 1995, AP-43(4):356 - 361.[8]顾长青,舒永泽,徐金平.物理光学迭代法的子域连接法.电子学报,2001,29(3):420-422.[9]Klement D, Preeissner J, Stein V. Special problems in applying the physical optics method for backscatter computations of complicated objects. IEEE Trans. on AP, 1988, AP-36(2): 228 -273.

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