Medium frequency propagation characteristics of different transmission lines in an underground coal mine [0.03%]
煤矿井下不同线路的中频信号传播特性研究
Jingcheng Li,Joseph A Waynert,Bruce G Whisner
Jingcheng Li
A medium frequency (MF) communication system operating in an underground coal mine couples its signals to a long conductor, which acts as an MF transmission line (TL) in a tunnel to permit communications among transceivers along the line. T...