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

一种稳定高效的NURBS建模MOM-PO法

贺之莉¹;黄锴¹;蒋晓博²;梁昌洪¹

(1. 西安电子科技大学天线与微波技术重点实验室，陕西西安 710071；
2. 浙江工业大学信息工程学院，浙江杭州 310023)

收稿日期:2010-12-20 出版日期:2012-02-20 发布日期:2012-04-06
通讯作者: 贺之莉
作者简介:贺之莉(1986-)，女，西安电子科技大学博士研究生，E-mail: hzl020314@126.com．
基金资助:
国家自然科学基金资助项目(60901030);中央高校基本科研业务费专项资金资助项目(JY10000902024)

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

摘要/Abstract

摘要：

提出一种稳定高效的物理光学方法结合矩量法的混合方法，用于快速分析非均匀有理B样条曲面建模电大平台附近天线的受扰方向图．采用修改阻抗矩阵的方法实现了矩量法区域和物理光学区域的混合作用，避免了迭代方法的收敛不确定性．采用驻相法计算物理光学区域感应电流的积分．引入矩量法区域分组及插值驻相点技术来减少优化函数的调用次数，提高算法效率．数值结果与传统的三角形物理光学方法结合矩量法方法得到的结果相比吻合良好，但计算效率比传统方法的效率大幅度提高．

关键词: 非均匀有理B样条, 物理光学方法结合矩量法, 驻相法, 加速技巧

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

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.

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

参考文献

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［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.
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［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.

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[2]	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.
[3]	袁浩波;王楠;梁昌洪. 一种高效率计算雷达散射截面的矩量法[J]. J4, 2009, 36(4): 629-674.
[4]	王楠;梁昌洪;张玉;陈铭. NURBS-UTD方法的爬行波射线寻迹算法 [J]. J4, 2007, 34(4): 600-604.
[5]	陈铭;张玉;王楠;梁昌洪. 基于NURBS建模技术的物理光学方法的遮挡判断[J]. J4, 2006, 33(3): 430-432.
[6]	刘英;赵维江;龚书喜. 计算物理光学积分的几种数值方法的分析[J]. J4, 2001, 28(4): 542-546.

一种稳定高效的NURBS建模MOM-PO法

Stable and efficient NURBS MOM-PO method

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