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IEEE Transactions on Antennas and Propagation
Volume 48 Number 9, September 2000

Natural Wave Propagation in Mine Environments

Page 1326.

Abstract:

Theoretical and experimental aspects of the natural propagation of high-frequency waves in mines are presented. A narrow-band and a wide-band analysis have been carried out to determine the most important characteristics of the channel such as the longitudinal attenuation, the coherence bandwidth,and the delay spread of the impulse response in the various areas of an underground mine. The basic principle of a localization of a mobile has also been checked by determining the direction of arrival of the waves.

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