一种稳定高效的NURBS建模MOM-PO法

doi:10.3969/j.issn.1001-2400.2012.01.011

J4 ›› 2012, Vol. 39 ›› Issue (1): 56-61.doi: 10.3969/j.issn.1001-2400.2012.01.011

• Original Articles • Previous Articles Next Articles

Stable and efficient NURBS MOM-PO method

HE Zhili¹;HUANG Kai¹;JIANG Xiaobo²;LIANG Changhong¹

(1. Science and Technology on Antenna and Microwave Lab., Xidian Univ., Xi'an 710071， China;
2. College of Information Eng., Zhejiang Univ. of Tech., Hangzhou 310023， China)

Received:2010-12-20 Online:2012-02-20 Published:2012-04-06
Contact: HE Zhili E-mail:hzl020314@126.com

Abstract

Abstract:

An efficient stable moments-physics optics (MOM-PO) hybrid method is proposed to calculate the disturbed pattern of an antenna around an electrically large platform modeled with Non Uniform Rational B Spline (NURBS) surfaces. Modifying the impendence matrix is used to implement the interaction of the MOM region and PO region for avoiding the convergence issue. The stationary phase method (SPM) is used to calculate the integral of the induced current. Both grouping of MOM regions and interpolation of stationary points are used to accelerate the present approach. Results obtained by this method agree well with that from the traditional Triangle MOM-PO. Comparison of execution times of each method demonstrates that the present method is accurate enough and much more efficient.

Key words: non uniform rational B spline, method of moments-physics optics, stationary phase method, accelerating technology

HE Zhili;HUANG Kai;JIANG Xiaobo;LIANG Changhong. Stable and efficient NURBS MOM-PO method[J].J4, 2012, 39(1): 56-61.

References

［1］ Fernandez-Recio R, García-Castillo L E, Gómez-Revuelto I, et al. Fully Coupled Hybrid FEM-UTD Method Using NURBS for the Analysis of Radiation Problems［J］. IEEE Trans on Antennas Propag, 2008, 56(3): 774-783.
［2］ Jakobus U, Landstorfer F M. Improvement of the PO-MM Hybrid Method By Accounting for Effects of Perfectly Conducting Wedges［J］. IEEE Trans on Antennas Propag, 1995(43): 1123-1129.
［3］ Hodges R E, Rahmat-Samii Y. An Iterative Current-based Hybrid Method for Complex Structures［J］. IEEE Trans on Antennas Propag, 1997(43): 265-276.
［4］ Perez J, Catedra M F. RCS of Electrically Large Targets Modeled with NURBS Surfaces［J］. Electronics Letters, 1992, 28(12): 1119-1121.
［5］ Conde O M, Perez J, Catedra M F. Stationary Phase Method Application for the Analysis of Radiation of Complex 3-D Conducting Structures［J］. IEEE Trans on Antennas Propagat, 2001, 49(5): 724-730.
［6］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.
［7］ Serim H A, Ergin A A. Computation of the Physical Optics Integral on NURBS Surfaces Using a Radon Transform Interpretation［J］. IEEE Antennas and Wireless Propagation Letters, 2008(7): 70-73.
［8］ Chen Ming, Zhang Yu, Liang Changhong. Analysis of Antenna Around NURBS surface with Iterative MOM-PO Technique［J］. J of Electromagn Waves and Appl, 2006, 20(12): 1667-1680.
［9］陈铭, 王楠, 梁昌洪. 基于NURBS建模技术的迭代MOM-PO方法分析电大尺寸平台天线方向图［J］. 电子学报, 2007(3): 392-395.
Chen Ming, Wang Nan, Liang Changhong. Analysis of Antenna Around Electrically Large NURBS Surface with Iterative MOM-PO method ［J］. Acta Electronic Sinica, 2007(3): 392-395.
［10］陈铭, 赵勋旺, 梁昌洪. 任意形状电大散射体附近天线受扰方向图的快速分析［J］. 电子与信息学报, 2007, 29(11): 2787-2790.
Chen Ming, Zhao Xunwang, Liang Changhong. Fast Analysis of Antenna around Arbitrary Shaped Scatterer ［J］. Journal of Electronics ＆ Information Technology, 2007, 29(11): 2787-2790.

Stable and efficient NURBS MOM-PO method

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