| “天宫二号”空间实验室大气质谱信号与地磁信号在磁暴干扰下的Hilbert-Huang变换 |
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| 引用本文： | 雷晴,刘立霞,史勇军,荆燕.“天宫二号”空间实验室大气质谱信号与地磁信号在磁暴干扰下的Hilbert-Huang变换[J].地球物理学进展,2020(1):16-22. |
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| 作者姓名： | 雷晴 刘立霞 史勇军 荆燕 |
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| 作者单位： | 新疆维吾尔自治区地震局;中国地震局地壳应力研究所 |
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| 基金项目： | 新疆地震局科学基金“基于Matlab软件的数学算法对新疆区域地磁观测资料干扰分析及去噪处理”(201814);国家自然科学基金“超大型储气库注采气对区域应力与地震活动影响的实测研究”(41574081)联合资助. |
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| 摘 要： | 本文采用Hilbert-Huang变换分别对磁暴干扰下的“天宫二号”空间实验室大气质谱信号和乌鲁木齐地磁基准台FHDZ-M15所产出地磁数据进行特征分析.实验首先采用小波分析方法分析两种信号的能量谱,结果可得:“天宫二号”空间实验室大气质谱信号和M15地磁信号在磁暴时段能量较为集中,且幅值较大.该实验表明两种信号的能量分布成正相关性.基于Hilbert-Huang变换的时频聚集性及处理非平稳信号的能力,实验进一步采用Hilbert-Huang变换对磁暴干扰下的两种信号进行时频特性分析.通过对两种信号的Hilbert-Huang谱分析可得:“天宫二号”空间实验室大气质谱信号和M15地磁信号在磁暴干扰下的频率均主要集中在0.2 Hz之内.同时,Hilbert-Huang谱实验清晰反映出了两种信号能量随时间和频率的分布情况.
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| 关 键 词： | “天宫二号”空间实验室 大气质谱信号 地磁M15信号 磁暴 能量谱 HILBERT-HUANG变换 |
Hilbert-Huang transform under the disturbance of magnetic storm using atmospheric spectrum signals in“Tiangong-2”space laboratory and geomagnetic signals |
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| LEI Qing,LIU Li-xia,SHI Yong-jun,JING Yan.Hilbert-Huang transform under the disturbance of magnetic storm using atmospheric spectrum signals in“Tiangong-2”space laboratory and geomagnetic signals[J].Progress in Geophysics,2020(1):16-22. |
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| Authors: | LEI Qing LIU Li-xia SHI Yong-jun JING Yan |
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| Institution: | (Earthquake Agency of Xinjiang Uygur Autonomous Region, rümqi 830011,China;Institute of Crustal Dynamics,China Earthquake Administration,Beijing 100085,China) |
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| Abstract: | In this paper,the Hilbert-Huang transform is used to analyze the characteristics of atmospheric spectrum signals and geomagnetic signals under the disturbance of magnetic storm.Atmospheric spectrum signals form the Space Laboratory of the Tiangong-2,and geomagnetic minute value form FHDZ-M15 in Urumqi geomagnetic reference station.The experiment first uses wavelet analysis to analyze the energy spectra of the two signals.It is found that the atmospheric spectrum signals and the M15 geomagnetic signal are concentrated in the magnetic storm period,and the amplitude is large.This experiment shows that the energy distribution of the two signals is positively correlated.The Hilbert-Huang transform has time-frequency aggregation and the ability to process non-stationary signals.In the experiment,the Hilbert-Huang transform is used to analyze the time-frequency characteristics of the two signals under the disturbance of magnetic storm.The experimental results by Hilbert-Huang spectrum show that the frequencies of atmospheric mass spectrometry signals and M15 geomagnetic signals under magnetic interference are mainly concentrated within 0.2 Hz.At the same time,the experiment about Hilbert-Huang spectrum clearly reflects the distribution of energy over time and frequency about the two signals. |
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| Keywords: | Tiangong-2 space lab Atmospheric spectrum signal FHDZ-M15 geomagnetic signal Magnetic storm Energy spectrum Hilbert-Huang transform |
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