Identification of Microseismic Signals Based on Multiscale Singular Spectrum Entropy

Figure 1

Decomposition of noisy triharmonic signal by EMD and VMD. (a) Noisy triharmonic signal and its spectrum. (b) EMD of noisy triharmonic signal with its IMF1-5. (c) VMD of noisy triharmonic signal with its –. (d) Decomposed spectral by EMD. (e) Decomposed spectral by VMD.

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