任意曲面上射线的寻迹方法

陈志贤; 苏东林; 刘焱; 方向

任意曲面上射线的寻迹方法

北京航空航天大学电子信息工程学院, 北京 100191

基金项目: 国家重点自然科学基金资助项目(60831001)

详细信息

中图分类号: TN011.4
计量
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- 被引次数: 0
出版历程
- 收稿日期: 2012-05-28
- 修回日期: 2012-10-19
- 网络出版日期: 2013-05-31

Ray path tracing on discrete surface

School of Electronic and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 为计算任意曲面上天线间的隔离度,提出一种射线寻迹的新算法——最小夹角法.首先对任意曲面表面进行三角形网格剖分,并按照文中要求的格式生成模型表面网格数据;用文中提出的"最小夹角法"对上述网格数据进行处理,从而达到快速准确地找出任意曲面上、任意两点间的短程线.求解了位于圆柱体、椭球体及任意组合体上任意两点间的短程线长度,验证了"最小夹角法"的准确性.
- 射线寻迹 /
- 短程线 /
- 爬行波
Abstract: In order to analyze antenna isolation on discrete surface, a new algorithm for ray tracing that called "minimum included angle algorithm" was proposed. First, the discrete surface was divided into triangular mesh to generate surface grid data that accord with the format required in the article. The data mentioned above was processed by using minimum included angle algorithm that was proposed in this paper. Then the length of geodesic path between any two points on discrete surface could be quickly and veraciously achieved. The length of geodesic path between any two points on cylinder, ellipse and discrete arrangement was computed, to confirm the veracity of "minimum included angle algorithm" on discrete surface.
- ray tracing /
- shortest path /
- creeping wave

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参考文献(8)

[1]	汪茂光.几何绕射理论[M].西安:西安电子科技大学出版社,1994:1-29 Wang Maoguang.Geometrical theory of diffraction[M].Xi-an:Xidian University Press,1994:1-29 (in Chinese)
[2]	Jonathan R Polimeni,Eric L Schwartz.Exact geodesics and shortest paths on polyhedral surfaces[J].IEEE Transactions on Pattern Av and Machine Intelligence,31(6):1006-1015
[3]	王冰切,苏东林,张晓雷.飞机表面绕射射线的寻迹方法[J].北京航空航天大学学报,2007,33(7):785-788 Wang Bingqie,Su Donglin,Zhang Xiaolei.Discrete ray path tracing on aircraft[J].Journal of Beijing university of Aeronautics and Astronautics,2007,33(7):785-788 (in Chinese)
[4]	李伟明,吕晓德,高本庆,等.GTD应用中任意凸曲面表面爬行波射线寻迹[J].电子学报,2000,28(9):49-51 Li Weiming,Lü Xiaode,Gao Benqing,et al.Ray path tracing on convex surface with application to the geometrical theory of diffraction[J].Acta Electronica Sinica,2000,28(9):49-51(in Chinese)
[5]	Dale F Rucker^*, Ty P A Ferré.BGPR Reconstruct:A MATLAB ray-tracing program for nonlinear inversion of first arrival travel time data from zero-offset borehole radar[J].Computers & Geosciences,2004,30(8):767-776
[6]	宗卫华,梁昌洪,曹祥玉,等.圆锥体与圆柱体的几何绕射理论绕射线寻迹[J].西安电子科技大学学报,2002,29(4):482-485 Zong Weihua,Liang Changhong,Cao Xiangyu,et al.Diffraction ray tracing of GTD on the cone and cylinder[J].Journal of Xidian University,2002,29(4):482-485(in Chinese)
[7]	吴萍,吴先良.凸曲面爬行波射线寻迹的研究[J].微机发展,2003,13(9):60-62 Wu Ping,Wu Xianliang.Ray path tracing on convex surface with applications to creeping wave[J].Microcomputer Development,2003,13(9):60-62(in Chinese)
[8]	王楠,梁昌洪,张玉,等.NURBS-UTD方法的爬行波射线寻迹算法[J].西安电子科技大学学报,2007,34(4):600-603 Wang Nan,Liang Changhong,Zhang Yu,et al.Study on the creeping ray-tracing algorithm of NURBS-UTD[J].Journal of Xidian University,2007,34(4):600-603(in Chinese)