Communication with moving trains in tunnels

Monk, N.; Winbigler, H.S.

doi:10.1109/iretvc1.1956.207438

Cited by 31 publications

(4 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this context the modal theory will be used to characterise the electromagnetic propagation within its interior [2]. Accurate modal analysis has been used [3], which enables the propagation to be evaluated with different polarisations, vertical, horizontal and circular, different antenna position for train and base station, and considering correction parameters like the characteristics of the walls of the tunnel, geometry, etc.…”

Section: Pure Tunnel Scenariosmentioning

confidence: 99%

RAPS, radio propagation simulator for CBTC system

Liang

Mera

Briso-Rodríguez

et al. 2012

WIT Transactions on the Built Environment

View full text Add to dashboard Cite

CBTC is Communication-Based Train Control system which is a cost-effective solution for signalling and traffic control of metro and monorail. For the CBTC system that can enhance transportation capacity by moving block control method with less trackside equipment, the radio transmission system is one of the most significant subsystems. Especially, the design and location of all radio-electrical elements is the key factor for the system reliability and availability. Therefore RAPS (Radio Propagation Simulator for CBTC Systems) has been developed together with CITEF (Railway Technology Research Centre of the Universidad Politécnica de Madrid), for the purpose of calculating the radio-electrical signal coverage and power along the track, and arranging a proper layout plan of trackside base stations and associated antennas for each project, in consideration of various aspects, such as tunnel geometry, track configuration, environment affecting obstacles.The simulator considers all the characteristics of the trackside, like tunnel detailed geometry, open areas cartography and computes propagation according to the specific radio parameters. RAPS is provided with a complete set of design tools, radio-electrical algorithms such as modal propagation for tunnels and Okumura-Hata and Ray-tracing for open areas providing a high accuracy in the prediction of the signal strength along the track. Also user-friendly graphical Computers in Railways XIII 111

show abstract

Section: Pure Tunnel Scenariosmentioning

confidence: 99%

RAPS, radio propagation simulator for CBTC system

Liang

Mera

Briso-Rodríguez

et al. 2012

WIT Transactions on the Built Environment

View full text Add to dashboard Cite

show abstract

“…From the radiating element point of view, some investigations have been given over to the development of novel technologies to provide radio communication in these environments. In 1956, a paper [46] disclosed what is now generally known as the leaky-feeder principle for propagation of VHF or UHF signals through a tunnel. Leaky coaxial cables (LCXs) have been employed since then [18,38].…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Wave Propagation Modeling for Finding Antenna Specifications and Positions in Tunnels of Arbitrary Cross-Section

Castiblanco¹,

Seetharamdoo²,

Berbineau³

et al. 2013

Wave Propagation Theories and Applications

View full text Add to dashboard Cite

“…Manuscript received October 2, 2010 (e.g. tunnels) [6], [7]. Despite that they have been mainly used in tunnels and mines [8] they have also found applications in indoor environments, especially in offices with lengthy corridors [9], [10].…”

Section: Introductionmentioning

confidence: 99%

Frequency Selective Buildings Through Frequency Selective Surfaces

Raspopoulos

Stavrou

2011

IEEE Trans. Antennas Propagat.

View full text Add to dashboard Cite

Abstract-This work proposes the deployment of Frequency Selective Surfaces (FSS) in indoor wireless environments and investigates their effect on radio wave propagation. FSS can be deployed to selectively confine radio propagation in indoor areas, by artificially increasing the radio transmission loss naturally caused by building walls. FSS can also be used to channel radio signals into other areas of interest. Simulations and measurements have been carried out in order to verify the frequency selectivity of the FSS. Practical considerations regarding the deployment of FSS on building walls and the separation distance between the FSS and the supporting wall have been also investigated. Finally, a controlled, small-scale indoor environment has been constructed and measured in an anechoic chamber in order to practically verify this approach through the usage of ray tracing techniques.

show abstract

Communication with moving trains in tunnels

Cited by 31 publications

References 1 publication

RAPS, radio propagation simulator for CBTC system

RAPS, radio propagation simulator for CBTC system

Electromagnetic Wave Propagation Modeling for Finding Antenna Specifications and Positions in Tunnels of Arbitrary Cross-Section

Frequency Selective Buildings Through Frequency Selective Surfaces

Contact Info

Product

Resources

About