Medium Frequency Propagation Characteristics of Different Transmission Lines in an Underground Coal Mine
A medium frequency (MF) communication system operating in an underground coal mine couples its signals to a long conductor, which acts as an MF transmission line (TL) in a tunnel to permit communications among transceivers along the line. The TL is generally the longest signal path for the system, and its propagation characteristics will have a major impact on the performance of the MF communication system. In this study, the propagation characteristics of three types of MF TLs in two layouts––on the roof and on the floor of a coal mine tunnel––were obtained in an effort to understand the propagation characteristics of different TLs in different locations. The study confirmed a low MF signal loss on all of these TLs. The study also found that the TLs in different layouts had substantially different propagation characteristics. The propagation characteristics of these different TLs in different layouts are presented in the paper.
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L. G. Stolarczyk, M. Sepich, K. Smoker, A medium frequency wireless communication system for underground mines. Report from A.R.F. Products, Inc., Raton, New Mexico, 87740 to Bureau of Mines, Jan. 1983.
L. G. Stolarczyk, Emergency and Operational low and medium frequency band communications system for underground mines, IEEE Trans. Ind. Appl., Volume 27, (Issue 4), Jul/Aug1991, Pages 780–790.
L. G. Stolarczyk, H. Bobroski, Medium frequency vehicular control and communication systems for underground mines, IEEE Vehicular Technology Conference, May1984, Pages 316–321.
H. Dobroski JR, L. G. Stolarczyk, Control and monitoring via medium-frequency techniques and existing mine conductors, IEEE Trans. Ind. Appl., Volume IA-21, (Issue 4), July 1985, Pages 1087–1092.
L. G. Stolarczyk, A medium frequency wireless communication system for underground mines, A. R. F. Products, Inc., Raton, New Mexico, A mining contract research report, Contract HO308004, 1984, pp.20–22–– 83–103.
T. S. Cory, Electromagnetic propagation in low coal mines at medium frequencies, Report from Collins Communications Switching Systems Division, Commercial Telecommunications Group, Cedar Rapids. Iowa 52406 to Bureau of Mines, June 12, 1978, Contract No. H0377053.
R. Lagace, A. Emslie, M. Grossman, Modeling and data analysis of 50 to 5000 kHz radio wave propagation in coal mines, supplement to final report. Arthur D. Little, Inc., USBM contract HO346045. Feb., 1980.
J. A. BrandaoFaria, Approximate evaluation of the wave propagation parameters of MF TL communication systems for mine tunnel using image theory, Journal of Electromagnetic Waves and Appl., Volume 28, (Issue 4), Feb. 2014, Pages515–530.
J. Li, B. Whisner, J. Waynert, Measurements of medium frequency propagation characteristics of a transmission line in an underground coal mine, Record of IEEE IAS Annual Meeting, 2012–MIC–343, Las Vegas NV, USA, Oct. 7–11, 2012.
J. Li, B. Whisner, J. Waynert, Measurements of medium frequency propagation characteristics of a transmission line in an underground coal mine, IEEE Trans. Ind. Appl., Volume 49, (No 5), Sept/Oct, 2013, Pages1984–1991.
J. Li, J. Waynert, B. Whisner, An introduction to a medium frequency propagation characteristic measurement method of a transmission line in underground coal mines, Progress in Electromagnetic Research B, Volume 55, 2013, Pages 131–149.
A. Agrawal, K. Lee, L. Scott, H. Fowles, Experimental characterization of multiconductor transmission lines in the frequency domain, IEEE Trans. Electromagn. Compatibility, Volume EMC-21, (Issue 1), Feb. 1979, Pages 20¬–27.
J. Volakis, Antenna Engineering Handbook, (The McGraw-Hill, Fourth Edition, 2007, pp. 51–3––51–43).
G. R. K. Shevgaonkar, Transmission lines and E. M waves, On-line lecture series, Department of Electrical Engineering, IIT, Bombay, Jan. 8, 2008.
C. R. Paul, Analysis of multiconductor transmission lines, (A John Wiley & Sons, 2nd edition, 2007, pp. 240–278).
A. E. Forooshani, S. Bashir, D. G. Michelson, S. Noghanian, A survey of wireless communications and propagation modeling in underground mines, IEEE Communications Surveys & Tutorials,Volume 15, (Issue 4), March 2013, Pages 1524–1545.
Coaxial Cable [Internet]. From Wikipedia – [modified 14 April 2014; cited 28 April 2014]. Available from http://en.wikipedia.org/wiki/Coaxial_cable.
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