| 探地雷达信号特征分析和分辨率提高方法研究 |
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| 引用本文： | 王牧男,曾昭发,黄玲,姚健.探地雷达信号特征分析和分辨率提高方法研究[J].吉林大学学报(地球科学版),2007(Z1). |
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| 作者姓名： | 王牧男 曾昭发 黄玲 姚健 |
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| 作者单位： | 吉林大学地球探测科学与技术学院 中海石油有限公司天津分公司技术部 长春 |
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| 摘 要： | 探地雷达信号的奇异点或突变点作为雷达信号的重要特征通常反映介质重要信息,如电性变化界面或异常体等。分析了探地雷达信号在Hilbert变换下,利用小波变换确定探地雷达信号奇异点位置的方法。解决了传统傅立叶变换只能从整体检测探地雷达信号奇异性的局限性。并且由于小波变换良好的时频局部化特性,进一步讨论了其在提高探地雷达信号分辨率的研究中的应用。
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| 关 键 词： | 探地雷达 小波变换 奇异性分析 分辨率 |
The Study on the Characteristic Analysis and the Improvement of Resolution of the GPR Signal |
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| WANG Mu-nan,ZENG Zhao-fa,HUANG Ling,YAO Jian .College of GeoExploration Science and Technology,Jilin University,Changchun ,China .Technical.The Study on the Characteristic Analysis and the Improvement of Resolution of the GPR Signal[J].Journal of Jilin Unviersity:Earth Science Edition,2007(Z1). |
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| Authors: | WANG Mu-nan ZENG Zhao-fa HUANG Ling YAO Jian College of GeoExploration Science and Technology Jilin University Changchun China Technical |
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| Institution: | WANG Mu-nan1,ZENG Zhao-fa1,HUANG Ling1,YAO Jian2 1.College of GeoExploration Science and Technology,Jilin University,Changchun 130026,China 2.Technical Department of CNOOC Ltd.Tianjin,Tianjin 300452,Chian |
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| Abstract: | The singularity points of the GPR signal always take the important imformations,such as the interfaces between the mediums of different electric property or the abnormal objects,ect.The authors discuss the method which applies the wavelet transform to fix on the location of the singularity points of the GPR signal and it also use the Hilbert transform.It solves the disadvantage of Fourier transform which can detect singularity only in the whole range.And because of the good localization property of wavelet transform in signal analysis,wavelet transform also can be used in the GPR signal processing.This paper researches the application of wavelet transform in improving the resolution of GPR signals. |
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| Keywords: | GPR wavelet transform singularity analysis resolution |
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