基于虚拟源树的射线跟踪算法的研究  

Ray tracing method based on a virtual source tree

作　　者：廖斌[1] 赵昵丽[2] 朱守正[2] 

机构地区：[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

出　　处：《华东师范大学学报（自然科学版）》2008年第3期103-108,共6页Journal of East China Normal University(Natural Science)

基　　金：地理信息科学教育部重点实验室开放研究基金资助项目(LGISEM0604);973子课题(2001CB610401)

摘　　要：提出了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.An effective ray tracing method based on a 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 a 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 effi- cient. 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.

关 键 词：虚拟源树 射线跟踪 DELPHI语言 FDTD 

分 类 号：TN99[电子电信—信号与信息处理]