Modelling Radio Wave Propagation in Tunnels with Ray-Tracing Method

被引:0
|
作者
Liu, C. G. [1 ]
Zhang, E. T. [2 ]
Wu, Z. P. [1 ]
Zhang, B. [1 ]
机构
[1] Wuhan Univ Technol, RF & Microwave Technol Res Ctr, Wuhan 430070, Peoples R China
[2] Wuhan Zhongyuan Elect Informat Corp, Wuhan, Peoples R China
关键词
EM wave propagation; tunnel communication; ray-tracing technique; microwave propagation;
D O I
暂无
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
The understanding of propagation characteristics in tunnels is important for communication systems deployed in tunnel environments. In this paper, formulas for path loss calculation based on ray-tracing techniques are presented. Two numerical criteria for terminating simulation processes are investigated together with their verifications. Among them, one criterion is the ending number of reflected rays; the other is the threshold for the last reflected ray. Simulation investigations carried out show that these two criteria are 50 and 0.1% respectively with accuracy in agreement with each other and with the measured results. The simulation results for propagation characteristics are illustrated for some applications with the developed programs.
引用
收藏
页码:2317 / 2321
页数:5
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