A ray tracing method for evaluating field distribution in tunnels

被引：0
|
作者：
Uchida, K [1 ]
Lee, CK
Matsunaga, T
Imai, T
Fujii, T
机构：
[1] Fukuoka Inst Technol, Fac Informat Engn, Fukuoka 8110295, Japan
[2] NTT, Mobile Commun Network Inc, Yokosuka, Kanagawa 2398539, Japan
来源：
ELECTRONICS AND COMMUNICATIONS IN JAPAN PART I-COMMUNICATIONS | 2000年 / 83卷 / 10期
关键词：
propagation; tunnel; ray tracing method; finite volume time domain method;
D O I：
10.1002/(SICI)1520-6424(200010)83:10<11::AID-ECJA2>3.0.CO;2-N
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper is concerned with field estimation by the ray tracing method (RTM) in two-dimensional (2D) tunnels with arbitrary cross section whose dimension is relatively large compared with the wavelength. The tunnel wall is approximated as a combination of plates. We investigate the accuracy of RTM in comparison with a rigorous solution or finite volume time domain (FVTD) solutions. It is shown that RTM provides accurate numerical results for the field distribution in a rectangular tunnel when its dimension is larger than 20 lambda. For the tunnel with a curved wall, such as a circular or semicircular tunnel, it is shown that the radius of curvature should be greater than 20 lambda to obtain accurate numerical results based on RTM. (C) 2000 Scripta Technica, Electron Comm Jpn.
引用
收藏
页码：11 / 18
页数：8
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