Seismic Signal's MP Decomposition Based on Ricker Wavelet
WANG Cheng-mei,YANG Sheng-li (School of Information Science & Technology,Southwest Jiaotong University,Chengdu 610031,China)
An improved dictionary with phase and scale is presented from the Ricker wavelet in this paper. The phase controls the diversification of the atomic phase,and the scale controls the diversification of the atomic attenuated speed. The experimental results show that the MSE of residual signal that derived from matching pursuit with the Ricker wavelet dictionary with phase and scale reduces 46 percent than the MSE of that derived from matching pursuit with the normal Ricker wavelet dictionary.