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| Authors | |
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HE Mei |
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LIU Cai |
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ZHOU Yin |
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LUO Teng |
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ZHANG Peng |
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DING Ling |
| PubMed | |
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Article by He, M. |
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Article by Liu, C. |
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Article by Zhou, Y. |
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Article by Luo, T. |
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Article by Zhang, P. |
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Article by Ding, L. |
��esearch on time- frequency analysis based on window theory
HE Mei, LIU Cai, ZHOU Yin, LUO Teng, ZHANG Peng, DING Ling
College of Geo-exploration Science and Technology��Jilin University��Changchun 130026��China
By comparing the short time Fourier transform��continuous wavelet transform��S transform��gener- alized S transform and so on�� the authors find that they have common inner product forms�� and the difference is that the value of window function�� The authors analyze the variation regulation of σ(f) along with the signal frequency�� and the resulting question between window and time- frequency resolution to explain the relative superiority of the generalized S transform�� Lastly��the generalized S transform are used in four kinds of thin interbed models to study the relation between time- frequency characteristics and geological characteristics��which is helpful to predict the di- rection of stratigraphic cycles��