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| 广义S变换在地震勘探中的研究进展 | |
| 引用本文： | 马见青,李庆春,王美丁.广义S变换在地震勘探中的研究进展[J].物探与化探,2011,35(2):265-269. |
| 作者姓名： | 马见青 李庆春 王美丁 |
| 作者单位： | 1. 长安大学,地质工程与测绘学院,陕西,西安,710054 2. 西北有色地质勘查局物化探总队,陕西,西安,710068 |
| 基金项目： | "863" 国家高技术研究A类课题"金属矿多波多分量地震处理解释新技术、新方法"(2007AA06Z103);交通部西部交通建设项目(2007 318 812 62);教育部高等学校博士学科点专项科研基金(2007 0710001) |
| 摘 要： | 广义S变换是目前比较新的一种非平稳信号分析的时频分析方法,其特点和优势为广义S变换的反变换与傅立叶变换有直接的联系,保证其是无损变换;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。基于这些特点和优势,在地震勘探中已经有了广泛的应用,如利用广义S变换进行瑞利面波频散分析、时频域波场分离与去噪、沉积相旋回以及地震波初至识别等。笔者总结了应用中比较有代表性的广义S变换类型,并结合实例,阐述了该方法在地震勘探中的研究进展。 |
| 关 键 词： | 时频分析 广义S变换 频散分析 波场分离与去噪 初至识别 |
| 收稿时间： | 2010-04-27 |
SOME ADVANCES OF GENNERAL S TRANSFORM IN SEISMIC EXPLORATION |
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| MA Jian-qing,LI Qing-chun,WANG Mei-ding.SOME ADVANCES OF GENNERAL S TRANSFORM IN SEISMIC EXPLORATION[J].Geophysical and Geochemical Exploration,2011,35(2):265-269. | |
| Authors: | MA Jian-qing LI Qing-chun WANG Mei-ding |
| Institution: | 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 |
| Abstract: | 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 is directly linked to ensure that it is the non-destructive transform; linear transform ensure there is no cross-terms; time-frequency resolution and the signal frequency-related; basic wavelet do not have to meet the permit conditions; scale makes the generalized S transform have good aggregation ability for frequency. Based on these characteristics and advantages, the generalized S transform has been widely used in seismic exploration. Such as dispersion analysis of Rayleigh surface wave, wave field separation and noising, Extraction of sedimentary cycles and the first-arrive detection of seismic wave, etc. In this paper, we summarize the present representative of the generalized S transform type, and combine with examples, expound the research progress of this method in seismic exploration. Finally, we give a prospect of generalized S transform in seismic exploration. |
| Keywords: | time-frequency analysis generalized S transform dispersion analysis wave field separation and noising first-arrive detection of seismic wave first-arrive detection |
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