APPLICATION OF WAVELET-DECOMPOSITION AND STFT METHOD IN CONTINUOUS DEFORMATION OBSERVATION ANALYSIS
Lü Pinji 1,2) ; Zhao Bin 1,2) ; Chen Zhiyao 1,2) ;Zhang Yan 1,2) ; and Li Zhengyuan 3)
1)Institute of Seismology, CEA, Wuhan 430071 2)Crustal Movement Laboratory, Wuhan 4300713)China Earthquake Network Center, Beijing 100045
Abstract By combining wavelet transform with STFT,finely decomposing the part of signal of high frequency from the part of low frequency has been realized and the timefrequency spectrum of the high frequency of the signal is given in the same time.Its results are direct and clear and the computational course is simple. This method can be used not only for analyzing continuous deformation observation data as a conventional method, but also can be used for other continuous observations.
Key words ：
wavelet decomposition
Short Time Fourier Transform(STFT)
continuous deformation observation
high frequency signal
timefrequency spetrum
Received: 01 January 1900
Corresponding Authors:
Lü Pinji
Cite this article:
Lü Pinji,Zhao Bin,Chen Zhiyao et al. APPLICATION OF WAVELET-DECOMPOSITION AND STFT METHOD IN CONTINUOUS DEFORMATION OBSERVATION ANALYSIS[J]. , 2011, 31(5): 136-140.
Lü Pinji,Zhao Bin,Chen Zhiyao et al. APPLICATION OF WAVELET-DECOMPOSITION AND STFT METHOD IN CONTINUOUS DEFORMATION OBSERVATION ANALYSIS[J]. jgg, 2011, 31(5): 136-140.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2011/V31/I5/136
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