Title :
Communication and distance measurement in subway tunnels using natural propagation
Author :
Lienard, M. ; Degauque, P. ; Laly, P.
Author_Institution :
Lille Univ., Villeneuve d´´Ascq, France
Abstract :
This paper first presents experimental results on the narrow band and wide band propagation characteristics in a typical subway tunnel, including the influence of narrowing, bends and masking effect. From this approach, the possibility of having a system ensuring simultaneously a communication link and a distance measurement is investigated. Trials have then confirmed the predicted results.
Keywords :
mobile communication; radio links; radiowave propagation; rail traffic; transportation; communication link; distance measurement; mobile communication; narrow band propagation; natural propagation; radio links; radiowave propagation; rail traffic; subway tunnels; transportation; wide band propagation; Attenuation; Delay effects; Distance measurement; Frequency; Geometry; Narrowband; Propagation losses; Transportation; Velocity measurement; Wideband;
Conference_Titel :
Devices, Circuits and Systems, 2004. Proceedings of the Fifth IEEE International Caracas Conference on
Print_ISBN :
0-7803-8777-5
DOI :
10.1109/ICCDCS.2004.1393390
