Instantaneous attributes analysis of seismic signals using improved HHT

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• 作者：Yuqing Wang ; Zhenming Peng ; Yanmin He
• 关键词：mode mixing ; ensemble empirical mode decomposition (EEMD) ; damped instantaneous frequency (DIF) ; frequency estimation ; seismic instantaneous attributes
• 刊名：Journal of Earth Science
• 出版年：2015
• 出版时间：August 2015
• 年：2015
• 卷：26
• 期：4
• 页码：515-521
• 全文大小：2,013 KB
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• 作者单位：Yuqing Wang (1)
  Zhenming Peng (1)
  Yanmin He (1)
  
  1. School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu, 610054, China
  
• 刊物主题：Earth Sciences, general; Geotechnical Engineering & Applied Earth Sciences; Biogeosciences; Geochemistry; Geology;
• 出版者：Springer Berlin Heidelberg
• ISSN：1867-111X

文摘

As the key technique of improved Hilbert-Huang transform (HHT), ensemble empirical mode decomposition (EEMD) has a good performance of eliminating mode mixing phenomenon, which has a strong impact on the observation of seismic information. However, the intrinsic mode functions (IMF) obtained from EEMD contain noises, so that it is required to find a more robust frequency estimation method to calculate the instantaneous frequency (IF) of IMF. For this reason, the improved HHT algorithm based on the damped instantaneous frequency (DIF) is proposed to overcome the shortage of EEMD. Compared with other IF estimation methods, the DIF has strong antinoise ability and high estimation accuracy. The test results of synthetic and real seismic data show that the proposed algorithm is feasible and effective for extracting seismic instantaneous attributes.