Application of Hilbert-Huang Transform in Data Processing of Earth Tide Deformation
详细信息
- 责任者：Li Ruisha (Second Crust Deformation Monitoring and Application Center ; CEA ; Xi’an 710054 ; China) ; Wu Yanqiang
- 刊名：Journal of Seismological Research
- 出版年：2012
- 卷期：35(1)
- 关键词：地震前兆 ; precursor ; 数据处理 ; data processing
- 页码：p.66-72
- 图表：8 illus., 12 refs.
- 分类号：0500
- issnNo：ISSN1000-0666
- isbnNo：CN53-1062/P
摘要
The authors introduce basic principles and implementation of Hilbert-Huang Transform method and analyze applicability and stability of this method in signal simulation processing.Studying the impact of step,jump and random noise on HHT analysis of analog signal,the results show that the method has high time-frequency resolution,reflect to the typical abnormal in the precursor data such as steps or jumps significantly,and has good stability,and is able to separate the signal which is higher than the 2 times standard deviation of the noise effectively.Finally,we verify the applicability of the method in the analysis of precursor data by using two cases and find that the HHT method can identify the tidal from the real observational data effectively,and have some reference meaning for disturbing rejection and extracting exception.
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