复合电磁散射分析中的精确几何建模

doi:10.3969/j.issn.1001-2400.2012.06.015

J4 ›› 2012, Vol. 39 ›› Issue (6): 92-98.doi: 10.3969/j.issn.1001-2400.2012.06.015

复合电磁散射分析中的精确几何建模

李杰¹;郭立新¹;何琼¹;吴振森¹;王晓冰²

(1. 西安电子科技大学理学院，陕西西安 710071；
2. 电磁散射重点实验室，上海 200438)

收稿日期:2011-08-17 出版日期:2012-12-20 发布日期:2013-01-17
通讯作者: 李杰
作者简介:李杰(1987-)，男，西安电子科技大学硕士研究生，E-mail: li.j1987@gmail.com．
基金资助:
国家自然科学基金资助项目(60971067);中央高校基本科研业务费专项资金资助项目(K50510070001);高等学校博士学科点专项科研基金资助项目(20100203110016)

Accurate geometry modeling in analysis of composite EM scattering

LI Jie¹;GUO Lixin¹;HE Qiong¹;WU Zhensen¹;WANG Xiaobing²

(1. School of Science, Xidian Univ., Xi'an 710071， China;
2. The State Key-Lab for Electromagnetic Scattering, Shanghai 200438， China)

Received:2011-08-17 Online:2012-12-20 Published:2013-01-17
Contact: LI Jie

摘要/Abstract

摘要：

研究了二维导体粗糙面与三维半掩埋导体目标双站复合电磁散射，给出了一种粗糙面与目标复合电磁散射建模方案．首先利用谱方法生成随机粗糙面并利用逆向工程方法获得连续曲面，进而与半掩埋目标复合获得精确的三维复合模型．在精确几何模型基础上，根据入射波频率对其进行表面网格剖分．接着利用物理光学方法和多层快速多极子方法对单一导体粗糙面以及粗糙面与目标复合体模型的电磁散射特性进行研究，计算了双站雷达散射截面．

关键词: 电磁散射, 粗糙面, 几何建模, 物理光学, 多层快速多极子方法

Abstract:

An approach to studying composite electromagnetic (EM) scattering from the 2-D conducting rough surface and half-buried 3-D conducting target is proposed from geometry modeling to radar cross section (RCS) calculation. A two dimensional rough surface is simulated using the spectral method, which is then converted into a continuous curved surface through inverse engineering. The target model and rough surface model are combined together into a very accurate composite model, after which the surface mesh is generated with the information on the incidence frequency. Then the physical optics method (PO) and multi-level fast multiple algorithm (MLFMA) are respectively employed to study the scattering problem. The results of the single rough surface and the combinative model are given and compared.

Key words: electromagnetic scattering, rough surfaces, geometry modeling, physical optics, multi-level fast mutiple algorithm

中图分类号:

TN011

李杰;郭立新;何琼;吴振森;王晓冰. 复合电磁散射分析中的精确几何建模[J]. J4, 2012, 39(6): 92-98.

LI Jie;GUO Lixin;HE Qiong;WU Zhensen;WANG Xiaobing. Accurate geometry modeling in analysis of composite EM scattering[J]. J4, 2012, 39(6): 92-98.

参考文献

［1］ Kubicke G, Bourlier C. A Fast Hybrid Method for Scattering from a Large Object with Dihedral Effects above a Large Rough Surface［J］. IEEE Trans on Antennas and Propagation, 2011, 59(1): 189-198.
［2］ Yang W, Zhao Z Q, Qi C H, et al. Electromagnetic Modeling of Breaking Waves at Low Grazing Angles with Adaptive Higher Order Hierarchical Legendre Basis Functions［J］. IEEE Trans on Geoscience and Remote Sensing, 2011, 49(1): 346-352.
［3］ Wang Y Q, Broschat S L. A Systematic Study of the Lowest Order Small Slope Approximation for a Pierson-Moskowitz Spectrum［J］. IEEE Geoscience Remote Sensing Letters, 2011, 8(1): 158-162.
［4］ Imperatore P, Iodice A, Riccio D. Volumetric-Perturbative Reciprocal Formulation for Scattering from Rough Multilayers［J］. IEEE Trans pm Antennas Propagtion, 2011, 59(3): 877-887.
［5］郭立新, 吴振森. 二维fBm随机粗糙面电磁散射的基尔霍夫近似［J］. 物理学报, 2001, 50(1): 42-47.
Guo Lixin, Wu Zhensen. Electromagnetic Scattering from Two-dimensional FBM Rough Surface Using Kirhhoff Approximation［J］. Acta Physica Sinica, 2001, 50(1): 42-47.
［6］任新成, 郭立新. 一维带限Weierstrass分形分层介质粗糙面电磁散射研究［J］. 西安电子科技大学学报, 2009, 36(2): 322-330.
Ren Xincheng, Guo Lixin. Investigation Electromagnetic Scattering from the 1D Band-Limited Weierstrass Fractal Rough Surface of the Layered Medium［J］. Journal of Xidian University, 2009, 36(2): 322-330.
［7］郭立新, 王安琪, 程相哲, 等. 双层地面植被散射模型的Monte Carlo方法研究［DB/OL］. ［2011-01-10］. http://highlights.paper.edu.cn/page_detail.php?id=1559.
［8］ Li J, Guo L X, Zeng H, et al. Investigation of Composite Electromagnetic Scattering from Ship-like Target on the Randomly Rough Sea Surface Using FDTD Method［J］. Chin Phys B, 2009, 18(7): 2757-2763.
［9］ Song J M, Lu C C, Chew W C. Multilevel Fast Multipole Algorithm for Electromagnetic Scattering by Large Complex Objects［J］. IEEE Transn on Antennas and Propagation, 1997, 45(10):1488-1493.
［10］王元源, 谢拥军, 王鹏. 电大尺寸辐射问题的预修正多层快速多极子分析［J］. 西安电子科技大学学报, 2010, 37(3): 502-506.
Wang Yuanyuan, Xie Yongjun, Wang Peng. Analysis of the Electrical Large Radiation Problem with the Pre-Corrected Multilevel Fast Multipole Algorithm［J］. Journal of Xidian University, 2010, 37 (3): 502-506.
［11］ Domingo M, Rivas F, Perez J, et al. Computation of the RCS of Complex Bodies Modeled Using NURBS Surfaces［J］. IEEE Antennas and Propagation Magazine, 2002, 37(6): 36-47.
［12］黄锴, 贺之莉, 梁昌洪. 改进的NURBS-PO法分析电大平台附近天线方向图［J］. 西安电子科技大学学报, 2010, 37(5): 879-883.
Huang Kai, He Zhili, Liang Changhong. Improved NURBS—PO Method for Analyzing the Disturbed Pattern of an Antenna around an Electrically Large Platform［J］. Journal of Xidian University, 2010, 37(5): 879-883.
［13］关莹, 龚书喜, 徐云学, 等. 适用于裁剪NURBS曲面RCS预估的改进的物理光学法［J］. 西安电子科技大学学报, 2010, 37(5): 893-897.
Guan Ying, Gong Shuxi, Xu Yunxue, et al. Improved PO Technique Targets Modeled with for the RCS Computation of Trimmed NURBS Surfaces［J］. Journal of Xidian University, 2010, 37(5): 893-897.
［14］杨凌霞. TDPO关键技术及TDPO/FDTD混合算法研究［D］. 西安: 西安电子科技大学, 2007.
［15］ Rokhlin V. Rapid Solution of Integral Equations of Scattering Theory in Two Dimensions［J］. Journal of Computational Physics, 1990, 86(2): 414-439.

[1]	王强;郭立新;刘忠玉. 粗糙海面与上方多目标瞬态电磁散射混合算法[J]. 西安电子科技大学学报, 2018, 45(5): 57-63.
[2]	赵华;郭立新. 高斯粗糙表面涂覆目标太赫兹散射特性[J]. 西安电子科技大学学报, 2018, 45(1): 23-29.
[3]	王飞;魏兵;杨谦;李林茜. 色散手征介质FDTD分析的Newmark方法[J]. 西安电子科技大学学报, 2017, 44(1): 40-44+124.
[4]	张元元;吴振森;张玉石. 多频段典型地表后向散射回波经验模型[J]. 西安电子科技大学学报, 2016, 43(5): 190-196.
[5]	吕政良;龚书喜;张鹏飞;陈文锋;赵博. 改进型IE-FFT结合物理光学的宽带分析方法[J]. J4, 2014, 41(5): 74-78.
[6]	张连波;郭立新;苟雪银;王安琪. 三层粗糙面电磁散射的矩量法研究[J]. J4, 2013, 40(6): 147-154.
[7]	郑帆;郭立新;刘伟. 风积新月形沙丘的电磁散射特性分析[J]. J4, 2013, 40(6): 132-139.
[8]	满明远;雷振亚;谢拥军;王元源. 电大目标散射问题的预修正多层快速多极子分析[J]. J4, 2012, 39(2): 133-137.
[9]	党晓杰;袁浩波;王楠;梁昌洪. MOM-PO混合方法中一种遮挡消影的新算法[J]. J4, 2012, 39(1): 38-41.
[10]	贺之莉;黄锴;蒋晓博;梁昌洪. 一种稳定高效的NURBS建模MOM-PO法[J]. J4, 2012, 39(1): 56-61.
[11]	刘伟;郭立新;王安琪. 具有纹理特征的二维高斯粗糙面单双站极化散射[J]. J4, 2011, 38(6): 75-81+102.
[12]	秦三团;龚书喜. 二维导体目标瞬态散射分析的混合快速算法[J]. J4, 2011, 38(5): 135-141.
[13]	黄锴;贺之莉;张红伟;梁昌洪;苏航. NURBS建模电大平台附近天线受扰方向图的分析[J]. J4, 2011, 38(4): 124-128.
[14]	关莹;龚书喜;徐云学;张帅;姜文. 适用于裁剪NURBS曲面RCS预估的改进的物理光学法[J]. J4, 2010, 37(5): 893-897.
[15]	黄锴;贺之莉;梁昌洪. 改进的NURBS-PO法分析电大平台附近天线方向图[J]. J4, 2010, 37(5): 879-883.

复合电磁散射分析中的精确几何建模

Accurate geometry modeling in analysis of composite EM scattering

PDF (PC)

赞

可视化

被引次数

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

Metrics

本文评价

推荐阅读 0