北京航空航天大学学报 ›› 2013, Vol. 39 ›› Issue (5): 665-669.

• 论文 • 上一篇    下一篇

任意曲面上射线的寻迹方法

陈志贤, 苏东林, 刘焱, 方向   

  1. 北京航空航天大学 电子信息工程学院, 北京 100191
  • 收稿日期:2012-05-28 修回日期:2012-10-19 出版日期:2013-05-31 发布日期:2013-05-22
  • 基金资助:
    国家重点自然科学基金资助项目(60831001)

Ray path tracing on discrete surface

Chen Zhixian, Su Donglin, Liu Yan, Fang Xiang   

  1. School of Electronic and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
  • Received:2012-05-28 Revised:2012-10-19 Online:2013-05-31 Published:2013-05-22

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.

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.

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