华东师范大学学报(自然科学版) ›› 2008, Vol. 2008 ›› Issue (3): 103-108.

• 物理学 电子科学与技术 • 上一篇    下一篇

基于虚拟源树的射线跟踪算法的研究

廖斌1,2, 赵昵丽2, 朱守正2   

  1. 1. 华东师范大学 地理信息科学教育部重点实验室, 上海 200062; 2. 华东师范大学 电子科学技术系, 上海 200062
  • 收稿日期:2007-07-05 修回日期:2008-01-08 出版日期:2008-05-25 发布日期:2008-05-25
  • 通讯作者: 廖斌

Ray tracing method based on a virtual source tree(Chinese)

LIAO Bin1,2, ZHAO Ni-li2, ZHU Shou-zheng2   

  1. 1. Key Laboratory of Geographic Information Science, Ministry of Education,East China Normal University, Shanghai 200062, China;2. Department of Electronic Science and Fechnology, East China Normal University ,Shanghai 200062, China
  • Received:2007-07-05 Revised:2008-01-08 Online:2008-05-25 Published:2008-05-25
  • Contact: LIAO Bin

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摘要：

提出一种有效的室内电波传播预测算法——基于虚拟源树的射线跟踪法.采用Delphi语言的多叉树结构存储发射源、反射源和绕射源以及接收点数据，并判断虚拟源树节点是否有效，从而使整个射线跟踪过程更便捷和高效.该算法的预测结果与FDTD(Finite Difference Time Domain)仿真结果基本吻合，实地测试也证明该算法的有效性.

关键词: 虚拟源树, 射线跟踪, Delphi语言, FDTD, 虚拟源树, 射线跟踪, Delphi语言, FDTD

Abstract:

An effective ray tracing method based on virtual source tree for prediction of indoor radio propagation was presented in this paper. The data of transmiting source, reflection source, diffraction source and receiving point were stored with many-fork tree in Delphi, and the validity of the nodes of the tree was estimated, to make the ray tracing course more simple and efficient. It was found that the predicted results with the method are in good agreement with the simulated results in FDTD, and the validity of the method is also verified by the experimental test.

Key words: ray tracing, Delphi language, FDTD, virtual source tree, ray tracing, Delphi language, FDTD

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