Skip directly to search Skip directly to A to Z list Skip directly to navigation Skip directly to page options Skip directly to site content

Mining Publication: A Hybrid Approach for Efficient Modeling of Medium-Frequency Propagation in Coal Mines

Original creation date: February 2015

Cover page for A Hybrid Approach for Efficient Modeling of Medium-Frequency Propagation in Coal Mines

An efficient procedure for modeling medium frequency (MF) communications in coal mines is introduced. In particular, a hybrid approach is formulated and demonstrated utilizing ideal transmission line equations to model MF propagation in combination with full-wave sections used for accurate simulation of local antenna-line coupling and other near-field effects. This work confirms that the hybrid method accurately models signal propagation from a source to a load for various system geometries and material compositions, while significantly reducing computation time. With such dramatic improvement to solution times, it becomes feasible to perform large-scale optimizations with the primary motivation of improving communications in coal mines both for daily operations and emergency response. Furthermore, it is demonstrated that the hybrid approach is suitable for modeling and optimizing large communication networks in coal mines that may otherwise be intractable to simulate using traditional full-wave techniques such as moment methods or finite-element analysis.

Authors: DE Brocker, PE Sieber, JA Waynert, J Li, PL Werner, DH Werner

Peer Reviewed Journal Article - February 2015

NIOSHTIC2 Number: 20046071

IEEE Antennas Propag Mag 2015 Feb; 57(1):164-176


TOP