一种集成经验模态分解的样本熵阈值微地震信号降噪方法

王亚娟, 李怀良, 庹先国, 沈统

A denoising method for microseismic signal based on the ensemble empirical mode decomposition of sample entropy threshold

Ya-Juan WANG, Huai-Liang LI, Xian-Guo TUO, Tong SHEN

图3 上述合成微地震数据与重构数据的时频分析比较 a—合成微地震信号;b—文中方法;c—带通滤波方法

Fig.3 Comparision of time-frequency analysis beween the above synthesized microseismic data and reconstructed data a—the synthesized microseismic data;b—the reconstructed signal;c—the result of ban-dpass filter