Because of the complex condition, the accident rate of coal mine remains high in China. At the time of accident, it has become an important issue which requires urgent solution that how to determine the number and location of the underground staff to carry out effective and accurate location of the rescue, and also to
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The research level for channel detection technology and the comparison of several common detection methods were introduced in this paper. According to the development needs of mine communication, this paper gave a further discussion on the propagation rule of elastic wave in the stratum medium by using theory of seismic exploration. Combining with the stratum
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The research level for channel detection technology and the comparison of several common detection methods were introduced in this paper. According to the development needs of mine communication, this paper gave a further discussion on the propagation rule of elastic wave in the stratum medium by using theory of seismic exploration. Combining with the stratum
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Through-the-earth communication system is a safe and reliable communication system used in minecoal production and disaster relief, which is designed and developed based on the basic research of electromagnetic (EM) propagation in the complex stratum media. When analytical methods is used to study the radio wave propagation in the earth medium, only the reflection and
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