| 基于改进Morlet小波的MP算法在地震频谱分析中的应用 |
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| 引用本文： | 孙劲松,陈国雄,刘天佑.基于改进Morlet小波的MP算法在地震频谱分析中的应用[J].地质科技情报,2011,30(5):119-122. |
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| 作者姓名： | 孙劲松 陈国雄 刘天佑 |
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| 作者单位： | 中国地质大学地球物理与空间信息学院,武汉,430074 |
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| 基金项目： | 国家重大科技专项子课题南海北部深水区生物礁地球物理特征及储层预测(2008ZX05025-03A-04) |
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| 摘 要： | 对地震信号的时频分析,Morlet小波是在时频联合域内具有最好分辨率的解析小波.介绍了基于Morlet小波的匹配追踪算法的原理,在此基础上改进了时频原子库,并增加了参数k来调节Morlet小波的带宽.对比了基于Morlet小波的匹配追踪(MP)算法与传统STFT时频分析方法,理论模型表明,该算法具有更高的时频分辨率；对...
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| 关 键 词： | 匹配追踪算法 Morlet小波 时频原子库 碳酸盐岩洞缝储层 |
MP Algorithm Based on Improved Morlet Wavelet in the Seismic Spectrum Analysis |
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| SUN Jing-song
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CHEN Guo-xiong
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LIU Tian-you.MP Algorithm Based on Improved Morlet Wavelet in the Seismic Spectrum Analysis[J].Geological Science and Technology Information,2011,30(5):119-122. |
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| Authors: | SUN Jing-song CHEN Guo-xiong LIU Tian-you |
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| Institution: | SUN Jing-song,CHEN Guo-xiong,LIU Tian-you(Institute of Geophysics and Gomatics,China University of Geosciences,Wuhan 430074,China) |
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| Abstract: | In the analysis of the instantaneous frequency of seismic signals,Morlet wavelet provides the best resolution ratio in symphysial area.This paper introduces the theory of matching pursuit algorithm on the basis of Morlet wavelet,and further improves the time frequency atom dictionary.Besides,the parameter is added to adjust the bandwidth of Morlet wavelet.The comparison of the theory of matching pursuit algorithm on the basis of morlet wavelet with the traditional STFT method with a theory model indicates t... |
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| Keywords: | matching pursuit algorithm Morlet wavelet time frequency atom dictionary fractured and cavernous carbonate reservoir |
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