Comparision between differential empirical mode decomposition and empirical mode decomposition of blasting vibration signals

A new analysis method of blasting vibration signals namely differential integral empirical mode decomposition(DEMD) is proposed.The comprehension of frequency sieving, aliasing distortion and the power spectrum characteristic of decomposition signals is explored combining with blasting vibration monitoring experiment by EMD and DEMD.The results show that aliasing distortion is controlled and different frequency components are extracted from the power spectrum of the signals by DEMD compared with EMD method.The conclusion indicates that DEMD is superior than EMD method at certain aspects.