基于自适应核时频分析的地震数据处理方法  

Seismic Data Processing Method Based on Adaptive Kernel Time-Frequency Analysis Method

作　　者：张洪茂 邢磊[1,2] 刘怀山 岳龙[3] 韩笑 李倩倩 林浩然[1] Zhang Hongmao;Xing Lei;Liu Huaishan;Yue Long;Han Xiao;Li Qianqian;Lin Haoran(The Key Laboratory of Submarine Geoscience and Prospecting Techniques,Ministry of Education,Ocean University of China,Qingdao 266100,China;Laboratory for Marine Mineral Resources,Pilot National Laboratory for Marine Science and Technology(Qingdao),Qingdao 266237,China;Qingdao Earthquake Station,Shandong Earthquake Agency,Qingdao 266071,China;College of Underwater Acoustic Engineering,Harbin Engineering University,Harbin 150050,China)

机构地区：[1]中国海洋大学海底科学与探测技术教育部重点实验室,山东青岛266100 [2]青岛海洋科学与技术试点国家实验室海洋矿产资源评价与探测技术功能实验室,山东青岛266237 [3]山东省地震局青岛地震台,山东青岛266071 [4]哈尔滨工程大学水声工程学院,黑龙江哈尔滨150050

出　　处：《中国海洋大学学报（自然科学版）》2023年第5期126-135,共10页Periodical of Ocean University of China

基　　金：国家自然科学基金项目(42276055,91958206);海底科学与探测技术教育部重点实验室开放基金项目(SGPT-20210-06);中央高校基础研究基金项目(202262008,202161013)资助。

摘　　要：本文提出了一种基于自适应核时频表示的最佳滤波方法。通过理论模型验证了该方法的灵活性和在时频谱上的聚焦能力,用于实际叠前与叠后地震资料的处理也取得了极好的去噪效果。结果表明该方法可以同时提高地震资料的信噪比与分辨率,对地层岩性变化具有更高的识别精度,为后续高精度解释工作奠定了坚实基础。The existing common seismic data denoising methods based on time-frequency analysis generally have the disadvantages of cross term interference in time-frequency spectrum and unsatisfactory denoising method,because of influence by the window function.Therefore,an optimal filtering method based on adaptive kernel time-frequency representation is proposed to effectively overcome the above defects in order to improve the results of signal time-frequency analysis.This method improves the computational efficiency of adaptive time-frequency analysis and the resolution of signal time-frequency analysis.The flexibility and focusing ability of this method in time-frequency spectrum are verified by theoretical model.Through the results of the actual pre-stack and post-stack data processing,it is proved that this method can improve the signal-to-noise ratio and resolution of seismic data at the same time,realize the real amplitude preserving processing.Therefore,applying adaptive kernel time-frequency representation can lay a solid foundation for the follow-up high-precision interpretation.

关 键 词：时频分析 自适应核 去噪 聚焦能力 

分 类 号：P631.4[天文地球—地质矿产勘探]