[1]ZHANG Shuai,YANG Runhai,WANG Bin,et al.Application and Study of S-Transform Time-Frequency Domain Filtering Method in Active Seismic Source Data Processing[J].Journal of Seismological Research,2019,42(01):80-87.
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Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
42
Number of periods:
2019 01
Page number:
80-87
Column:
Public date:
2019-04-20
- Title:
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Application and Study of S-Transform Time-Frequency Domain Filtering Method in Active Seismic Source Data Processing
- Author(s):
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ZHANG Shuai1; YANG Runhai1; WANG Bin1; SUN Shoucai2; PANG Weidong1; JIANG Jinzhong1; GAO Ergen3
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(1. Yunnan Earthquake Agency,Kunming 650224,Yunnan,China)(2. School of Earth Sciences,Institute of Disaster Precention,Sanhe 065201,Hebei,China)(3.School of Civil Engineering, Anhui Jianzhu University,Hefei 230000,Anhui,China)
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- Keywords:
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S-transform; active seismic source; time-frequency domain filtering; signal to noise ratio
- CLC:
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P315.63
- DOI:
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- Abstract:
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In the active seismic source detection,the receiving station with a large source ranging has a weak signal energy and various interferences,and the effective signal is extinguished in the interference signal,resulting in a decrease in the signal-to-noise ratio of the signal. The S-transform time-frequency domain filtering method is used to simulate the 1-D and 2-D noise-added data respectively. It is found that this method can effectively identify random signals and improve the correlation between the output signal and the original signal. Then,the S-transform time-frequency filtering method and frequency filtering method are applied to filter the data of Gaoxing station in Binchuan active source. The results show that the S-transform time-frequency domain filtering method can effectively suppress noise in active source data processing and improve the signal-to-noise ratio of seismic signals,and the effect is better than that of frequency domain filtering method.