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Radio propagation at 900 MHz in underground coal mines.

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Radio propagation at 900 MHz in underground coal mines.

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Title: Radio propagation at 900 MHz in underground coal mines.
Author: Zhang, Yue Ping.; Zheng, Guo Xin.; Sheng, J. H.
Copyright year: 2001
Abstract: This paper reports on experimental results of radio propagation in two underground coal mines. Measurements were performed at 900 MHz on horizontal and vertical polarization in typical coal mine operational zones. Values of propagation loss in dB/100 m are derived. Additional losses due to coal mine curvatures and common coal mining equipment obstructions are also presented. A hybrid tunnel propagation model consisting of the freespace propagation model and the modified waveguide propagation model is used to explain some measurement results. Based on these results, we believe that microcellular radio communications systems are feasible in coal mines.
Subject: DRNTU::Engineering::Electrical and electronic engineering.
Type: Journal Article
Series/ Journal Title: IEEE transactions on antennas and propagation
School: School of Electrical and Electronic Engineering
Rights: © 2001 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. http://www.ieee.org/portal/site.
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