MT信号处理中小波分析与Hilbert-Huang变换的比较 |
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引用本文: | 蔡剑华,胡惟文,覃业贵,陈卿冶.MT信号处理中小波分析与Hilbert-Huang变换的比较[J].湖南文理学院学报(自然科学版),2014(2):29-34. |
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作者姓名: | 蔡剑华 胡惟文 覃业贵 陈卿冶 |
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作者单位: | 湖南文理学院物理与电子科学学院;解放军93062部队 |
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基金项目: | 国家自然科学基金项目(41304098);湖南省自然科学基金项目(12JJ4034);湖南省教育厅青年项目(13B076);湖南文理学院重点学科建设项目资助-无线电物理;湖南省重点实验室“光电信息集成与光学制造技术”;“湖南省光电信息技术校企联合人才培养基地”;常德市科技局博士创新创业项目(2013BS01);常德市科技局项目(2011JC02) |
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摘 要: | 以实测大地电磁信号为分析对象,对比研究了小波分析和Hilbert-Huang变换在大地电磁(magnetotelluric,MT)信号分解和时频分析上面的特点.给出了小波分析和Hilbert-Huang变换的数学原理,分析了2种方法在MT信号分解中的分解方法及其物理意义,讨论了2种方法在MT信号时频谱表征能力上的异同,为大地电磁信号分析方法的选择提供用了有价值的参考.
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关 键 词: | 大地电磁信号 Hilbert-Huang变换 小波分析 分解 时频分析 |
Comparison of wavelet analysis and Hilbert-Huang transform in MT signal procession |
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Affiliation: | CAI JianHua;HU WeiWen;QING YeGui;CHEN QinYe;Department of Physics and Electronics,Hunan University of Arts and Science;Chinese People’s Liberation Army 93062 Troops; |
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Abstract: | Measured magnetotelluric signal is taken as the analysis object,and comparative study of wavelet analysis and Hilbert-Huang transform is applied in magnetotelluric(MT) signal procession from signal decomposition to time-frequency analysis.The mathematical theory of Wavelet analysis and Hilbert-Huang transform are expressed.The decomposition method of two ways and their physical significance for MT signal are analyzed,and the similarities and differences to characterize the spectrum of MT signal are discussed between the two methods.These provide a valuable reference foe the choice of analysis method of magnetotelluric signal procession. |
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Keywords: | magnetotelluric signal Hilbert-Huang transform wavelet analysis decomposition time-frequency analysis |
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