The Analysis of Coal or Rock Electromagnetic Radiation (EMR) Signals Based on Hilbert-Huang Transform (HHT)

It was summarized that the basic knowledge and principles of the Hilbert-Huang transform (HHT), and realized HHT pairs of EMR signal analysis and processing. Using Ensemble Empirical Mode Decomposition (EEMD) to decompose coal or rock electromagnetic radiation signals which obtained with the various stages of coal or rock failure process under uniaxial compression deformation, rupture, crack propagation, destruction, get some intrinsic mode functions (IMF) with the independently physical meaning; from these IMFs determine the valid signal waveforms of EMR signal; lay the foundations of field application of EMR prediction method.