Title :
Modelling radio wave propagation in tunnels with ray-tracing method
Author :
Liu, C.G. ; Zhang, E.T. ; Wu, Z.P. ; Zhang, Boming
Author_Institution :
RF & Microwave Technol. Res. Center, Wuhan Univ. of Technol., Wuhan, China
Abstract :
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.
Keywords :
radiowave propagation; ray tracing; communication systems; path loss calculation; radiowave propagation modelling; ray-tracing method; reflected ray; simulation processes; tunnel environments; Indexes; Numerical models; Propagation losses; EM wave propagation; microwave propagation; ray-tracing technique; tunnel communication;
Conference_Titel :
Antennas and Propagation (EuCAP), 2013 7th European Conference on
Conference_Location :
Gothenburg
Print_ISBN :
978-1-4673-2187-7
Electronic_ISBN :
978-88-907018-1-8
