Evaluation of Suitable Frequency



The radio wave propagation through coal and rock strata suffers from dispersion, absorption, and scattering of electromagnetic waves due to its natural properties and space limitations (Bandyopadhyay et al., 2007; Wait, 1971; Wait and Hill, 1972). The heterogeneous and complex structure of coal and rock strata further complicates the process of radio propagation. Radio frequency (RF) waves get attenuated significantly when traversing through coal strata due to absorption. The attenuation of signal mainly depends upon the dielectric constant and conductivity of coal strata.


Signal Strength Underground Mine Radio Propagation Radio Wave Propagation Rock Stratum 


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© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  1. 1.Central Institute of Mining & Fuel ResearchDhanbadIndia

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