DocumentCode :
2888649
Title :
Modeling RF propagation in tunnels
Author :
Chenming Zhou ; Waynert, Joseph ; Plass, Timothy ; Jacksha, Ronald
Author_Institution :
Office of Mine Safety & Health Res., Nat. Inst. for Occupational Safety & Health, Pittsburgh, PA, USA
fYear :
2013
fDate :
7-13 July 2013
Firstpage :
1916
Lastpage :
1917
Abstract :
As mandated by the 2006 Mine Improvement and New Emergency Response (MINER) Act, many underground coal mines have installed UHF radio systems to provide communications between personnel on the surface and underground. In an effort to better understand UHF signal propagation in tunnel environments, we made radio signal attenuation measurements in concrete tunnels at frequencies of 455 MHz, 915 MHz, 2.45 GHz, and 5.8 GHz. In this paper, a ray tracing method is used to model the channel. Although the tunnel has an arched roof, the model describes the propagation behavior very well using a rectangular tunnel with the same width. The measured data verify the ability of the ray tracing model to predict radio frequency propagation at all the four frequencies. In addition, the propagation constants for the different frequencies are investigated and shown to be consistent with the measured values.
Keywords :
UHF radio propagation; coal; microwave propagation; mining; ray tracing; tunnels; MINER act; RF propagation modeling; UHF radio systems; UHF signal propagation; concrete tunnels; frequency 2.45 GHz; frequency 455 MHz; frequency 5.8 GHz; frequency 915 MHz; mine improvement-new emergency response act; propagation behavior; propagation constants; radio frequency propagation prediction; radio signal attenuation measurements; ray tracing method; rectangular tunnel; tunnel environments; underground coal mines; Antenna measurements; Attenuation; Coal mining; Frequency measurement; Power measurement; Radio frequency; Ray tracing; Waveguide; attenuation constant; ray tracing; tunnel propagation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2013 IEEE
Conference_Location :
Orlando, FL
ISSN :
1522-3965
Print_ISBN :
978-1-4673-5315-1
Type :
conf
DOI :
10.1109/APS.2013.6711616
Filename :
6711616
Link To Document :
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