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| Keywords | |
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reassigned Gabor transform |
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high resolution |
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specturm decomposition |
| Authors | |
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ZHOU Jia-Xiong-1 |
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3 |
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ZHANG Guo-Dong-2 |
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3 |
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CHANG Shuai-2 |
| PubMed | |
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Article by Zhou, J. X. 1 |
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Article by 3 |
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Article by Zhang, G. D. 2 |
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Article by 3 |
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Article by Chang, S. 2 |
High-resolution spectrum decomposition based on reassigned Gabor transform
ZHOU Jia-Xiong-1, 3, ZHANG Guo-Dong-2, 3, CHANG Shuai-2
1. Faculty of Earth Resources��China University of Geosciences��Wuhan 430074��China; 2. College of Geo-exploration Science and Technology��Jilin University��Changchun 130026��China; 3. Zhanjiang Branch of CNOOC Ltd�� ��Zhanjiang 524057��Guangdong��China
The seismic signal is random signal�� Its frequency is variable with time�� Gabor transform method�� a STFT being used in time-frequency analysis��is limited in time-frequency resolution�� We introduce a reassigned Gabor transform��which assigns the total energy to the center of gravity on the time-frequency plane��to improve the resolution�� The theoretical and real data examples show that the reassigned Gabor method has much higher time-frequency resolution��providing more detailed stratification and more accurate detection of the hydrocarbons��