| 基于Choi-Williams时频分布的阵列声波测井信号时频分析 |
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| 引用本文： | 王祝文,刘菁华,聂春燕.基于Choi-Williams时频分布的阵列声波测井信号时频分析[J].地球物理学进展,2007,22(5):1481-1486. |
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| 作者姓名： | 王祝文 刘菁华 聂春燕 |
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| 作者单位： | 1. 吉林大学地球探测科学与技术学院,长春,130026
2. 长春大学电子信息工程学院,长春,130022 |
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| 基金项目： | “九五”国家重大科学工程“中国大陆科学钻探工程”项目(计高技[1999]1423号)资助 |
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| 摘 要： | 对多极子阵列声波测井信号,提出了一种基于信号时、频局域相关能量的新的时-频信号分析方法,Choi-Williams能量分布,它有着较明确的物理意义.该分析方法对于不同岩性的构造的响应具有很好的区分和识别能力,其声波全波列的Choi-Williams能量分布对由不同岩性组成的构造破碎带具有明显不同的表现特征.利用相应的模式识别方法,可以对这些岩性构造进行有效的区分和识别.
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| 关 键 词： | 阵列声波 时-频分布 信号分析 Choi-Williams能量分布 |
| 文章编号： | 1004-2903（2007）05-1481-06 |
| 收稿时间： | 2006-10-10 |
| 修稿时间： | 2007-03-08 |
Time-frequency analysis of array acoustic logging signal based on Choi-Williams energy distribution |
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| WANG Zhu-wen,LIU Jing-hua,NIE Chun-yan.Time-frequency analysis of array acoustic logging signal based on Choi-Williams energy distribution[J].Progress in Geophysics,2007,22(5):1481-1486. |
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| Authors: | WANG Zhu-wen LIU Jing-hua NIE Chun-yan |
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| Institution: | 1.CollegeofGeoexplorationSci.&Tech.,JilinUniversity,Changchun130026,China;2.ElectronicInformationInstitute,ChangchunUniversity,Changchun130022,China |
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| Abstract: | A new time-frequency signal analysis method for array acoustic logging signal data analysis,Choi-Williams energy distribution,based on local correlation distribution of signal energy between time and frequency domains was proposed in this paper.This distribution has an evident physical significance.This method was provided with the abilities to distinguish and identify the different kinds of structural fracture zones responses.And the array acoustic logging signal Choi-Williams energy distributions have the evidences of different representation characteristics for different kind structural fractures zones.Making use of the suitable pattern recognition method,the different kinds of structures and fracture zones can be distinguished and identified effectively. |
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| Keywords: | Array acoustic logging time-frequency distribution signal analysis Choi-Williams energy distribution |
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