Time-frequency analysis of seismic data using synchro-squeezing S transform
Liu Han1,3, Zhang Jianzhong1,2,3, Huang Zhonglai1,3
1. Key Laboratory of Submarine Geosciences and Prospecting Techniques, Ministry of Education, Qingdao, Shandong 266100, China;
2. Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao, Shandong 266061, China;
3. College of Marine Geosciences, Ocean University of China, Qingdao, Shandong 266100, China
Abstract:The S transform (ST) is a one of widely used time-frequency analysis methods,but affected by the Heisenberg uncertainty principle,its resolution is limited.A new time-frequency transform called synchro-squeezing S transform (SSST) is proposed in this paper,which effectively eliminates false frequency components and improves the time-frequency resolution by squeezing the result of S transform in the frequency direction,and the inverse transformation of SSST is lossless.Tests on synthetic data and seismic data show that the proposed transform yields time-frequency results with higher resolution than the ST and preserves signal frequency characteristics,which helps thin bed reservoir identification.
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