An EEMD-Based Denoising Method for Seismic Signal of High Arch Dam Combining Wavelet with Singular Spectrum Analysis
Joint Authors
Zhang, Lixin
Zhang, Qiling
Yang, Shengmei
Li, Bo
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-03-10
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Due to complicated noise interference, seismic signals of high arch dam are of nonstationarity and a low signal-to-noise ratio (SNR) during acquisition process.
The traditional denoising method may have filtered effective seismic signals of high arch dams.
A self-adaptive denoising method based on ensemble empirical mode decomposition (EEMD) combining wavelet threshold with singular spectrum analysis (SSA) is proposed in this paper.
Based on the EEMD result for seismic signals of high arch dams, a continuous mean square error criterion is used to distinguish high-frequency and low-frequency components of the intrinsic mode functions (IMFs).
Denoised high-frequency IMF using wavelet threshold is reconstructed with low-frequency components, and SSA is implemented for the reconstructed signal.
Simulation signal denoising analysis indicates that the proposed method can significantly reduce mean square error under low SNR condition, and the overall denoising effect is superior to EEMD and EEMD-Wavelet threshold denoising algorithms.
Denoising analysis of measured seismic signals of high arch dams shows that the performance of denoised seismic signals using EEMD-Wavelet-SSA is obviously improved, and natural frequencies of the high arch dams can be effectively identified.
American Psychological Association (APA)
Li, Bo& Zhang, Lixin& Zhang, Qiling& Yang, Shengmei. 2019. An EEMD-Based Denoising Method for Seismic Signal of High Arch Dam Combining Wavelet with Singular Spectrum Analysis. Shock and Vibration،Vol. 2019, no. 2019, pp.1-9.
https://search.emarefa.net/detail/BIM-1211276
Modern Language Association (MLA)
Li, Bo…[et al.]. An EEMD-Based Denoising Method for Seismic Signal of High Arch Dam Combining Wavelet with Singular Spectrum Analysis. Shock and Vibration No. 2019 (2019), pp.1-9.
https://search.emarefa.net/detail/BIM-1211276
American Medical Association (AMA)
Li, Bo& Zhang, Lixin& Zhang, Qiling& Yang, Shengmei. An EEMD-Based Denoising Method for Seismic Signal of High Arch Dam Combining Wavelet with Singular Spectrum Analysis. Shock and Vibration. 2019. Vol. 2019, no. 2019, pp.1-9.
https://search.emarefa.net/detail/BIM-1211276
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1211276