湖南文理学院学报（自然科学版）
湖南文理學院學報（自然科學版）
호남문이학원학보（자연과학판）
JOURNAL OF HUNAN UNIVERSITY OF ARTS AND SCIENCE(SCIENCE AND TECHNOLOGY)
2014年
2期
29-34
,共6页
蔡剑华%胡惟文%覃业贵%陈卿冶
蔡劍華%鬍惟文%覃業貴%陳卿冶
채검화%호유문%담업귀%진경야
大地电磁信号%Hilbert-Huang变换%小波分析%分解%时频分析
大地電磁信號%Hilbert-Huang變換%小波分析%分解%時頻分析
대지전자신호%Hilbert-Huang변환%소파분석%분해%시빈분석
magnetotelluric signal%Hilbert-Huang transform%wavelet analysis%decomposition%time-frequency analysis
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(magneto-telluric, 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。
以實測大地電磁信號為分析對象,對比研究瞭小波分析和 Hilbert-Huang 變換在大地電磁(magneto-telluric, MT)信號分解和時頻分析上麵的特點。給齣瞭小波分析和Hilbert-Huang變換的數學原理,分析瞭2種方法在MT信號分解中的分解方法及其物理意義,討論瞭2種方法在MT信號時頻譜錶徵能力上的異同,為大地電磁信號分析方法的選擇提供用瞭有價值的參攷。
이실측대지전자신호위분석대상,대비연구료소파분석화 Hilbert-Huang 변환재대지전자(magneto-telluric, MT)신호분해화시빈분석상면적특점。급출료소파분석화Hilbert-Huang변환적수학원리,분석료2충방법재MT신호분해중적분해방법급기물리의의,토론료2충방법재MT신호시빈보표정능력상적이동,위대지전자신호분석방법적선택제공용료유개치적삼고。
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.
