基于广义S变换的地层吸收补偿

英文篇名：Stratigraphic absorption-compensation based on the generalized S-transform
中文刊名：煤田地质与勘探
英文刊名：Coal Geology & Exploration
作者：马见青 ; 李庆春 ; 王美丁
英文作者：MA Jianqing1 ; LI Qingchun1 ; WANG Meiding2(1.School of Geological Engineering and Surveying ; Chang’an University ; Xi′an 710054 ; China ; 2.Team of Geophysical and Geochemical Exploration ; Bureau of Geology for Non-ferrous Metals in Northwest China ; CNNC ; Xi′an 710068 ; China)
中文关键词：广义S变换 ; 时频分析 ; 吸收补偿 ; 地震分辨率
英文关键词：generalized S transform ; time-frequency analysis ; absorption-compensation ; seismic resolution
出版日期：2010-08-25
机构：长安大学地质工程与测绘学院;西北有色地质勘查局物化探总队;
年：2010
期：04
出版单位：煤田地质与勘探

摘要

广义S变换是一种新的非平稳信号时频分析方法。广义S变换的反变换与傅立叶变换有直接的联系,是无损变换;线性变换保证其不存在交叉项;时频分辨率与信号的频率有关;基本小波不必满足容许性条件;尺度性质使得广义S变换有很好的频率聚集能力。基于广义S变换的特点和优势,进行地层吸收补偿。通过对实际二维叠后地震数据进行地层吸收补偿处理,结果表明,提高了地震反射层的分辨率,改善了地震资料的品质,而且无需知道地层的Q值。
The generalized S transform is a relatively new time-frequency analysis method for non-stationary signal,which has the following characteristics and advantages: S transform inverse transform and Fourier transform are directly linked to ensure that it is the non-destructive transform;linear transform ensures that there is no cross-terms;time-frequency resolution and the signal frequency-related;basic wavelet does not have to meet the permitted conditions;scale makes the generalized S transform have good aggregation ability for frequency.This paper uses this method for stratigraphic absorption-compensation based on these characteristics and advantages.Through the processing of stratigraphic absorption-compensation for actual two-dimensional poststack seismic data,results show that this method can do well on absorption-compensation,improve the resolution of seismic reflection without the Q value of the Strata.

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