Signal Propagation Modeling Based on Weighting Coefficients Method in Underground Tunnels

The propagation of electromagnetic waves guided in tunnels and mines is an area of scientific study which is hard to model due to multiple reflections on walls and surrounding obstacles. A novel propagation model for underground tunnels based on the weighting sum of the log-distance propagation mode...

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Bibliographic Details
Published in:Applied Computational Electromagnetics Society journal 2021-08, Vol.36 (8), p.1059-1064
Main Authors: Karaca, Yusuf, Tamer, zg r
Format: Article
Language:English
Subjects:
Coal mining
Electromagnetic radiation
Propagation
Transmitters
Tunnels
Ultrahigh frequencies
Wave propagation
Waveguides
Weighting
Online Access:Get full text
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Summary:The propagation of electromagnetic waves guided in tunnels and mines is an area of scientific study which is hard to model due to multiple reflections on walls and surrounding obstacles. A novel propagation model for underground tunnels based on the weighting sum of the log-distance propagation model, the modified waveguide model and, the far zone propagation model for the ultra-high frequency (UHF) band is proposed in this paper. The propagation model is divided into five regions based on the distance between the transmitter and the receiver. Each region shows a different propagation characteristic and modeled with weighting sum of the base propagation models. Our model was tested in a tunnel with 2 m x 1.5 m cross-section and 250 m length. Measurement results are consistent with the proposed propagation model.
ISSN:1054-4887
1943-5711
DOI:10.47037/2021.ACES.J.360815