【摘要】 对Ricker子波进行了改进,增加了相位参数和尺度参数。相位参数用来控制原子的相位变化,而尺度参数用来控制原子的衰减速度变化。实验结果表明,用这种改进的Ricker子波作为原子库,对实际采集到的地震信号进行稀疏分解,分解后的残差信号的MSE(Mean Square Error)要比采用一般的Ricker子波作为原子库降低了近46%。更多还原

【Abstract】 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.更多还原