Application of EEMD in Blasting Vibration Signal De-noising

Aim at the problem of function choosing,Fourier based transform and EMD denoising method existing in the wavelet de-noising method,the EEMD decomposition de-noising was introduced to blasting vibration signal processing field.Firstly,the simulation experiment was used to verify EEMD overcoming the faults of EMD.Secondly,the wavelet decomposition,EMD and EEMD were used respectively to low-pass denoising dispose the acceleration time-histories obtained by numerical differentiation.The comparison results show that the EEMD not only has higher SNR(signal to Noise Ratio),but also keep stationary character in itself fully,and the IMF component obtained has obvious practical physical significance.