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| 星载电场数据处理方法研究 | |
| 引用本文： | 安张辉,元丽华,范滢滢,刘君,谭大诚,陈军营,郑国磊.星载电场数据处理方法研究[J].地球物理学进展,2012,27(1):83-91. |
| 作者姓名： | 安张辉 元丽华 范滢滢 刘君 谭大诚 陈军营 郑国磊 |
| 作者单位： | 1. 中国地震局地震预测研究所兰州科技创新基地,兰州730000;中国地震局兰州地震研究所,兰州730000 2. 兰州理工大学理学院,兰州,730050 3. 中国地震局地震预测研究所兰州科技创新基地,兰州,730000 |
| 基金项目： | 中国地震局地震预测研究所基本科研业务专项，国家科技支撑计划 |
| 摘 要： | 给出一种新的非线性、非平稳信号的处理方法——HHT方法,并把该方法首次应用于星载电场数据处理中.以2004年9月15日菲律宾6.0级地震前两天(13日)DEMETER卫星经过震中区域上空所记录到的数据为例,对ULF频段的电场数据进行了处理,得到了相应的HHT时频图谱.另外,还利用DEMETER卫星中心网站提供的SWAN软件计算得到了相应的小波变换时频图谱,通过比较发现,虽然两种方法对异常信号出现的位置时刻的描述有相同的能力,但HHT方法在异常信号的细节描述上更为清晰,从而为今后进一步的研究工作奠定了基础. |
| 关 键 词： | DEMETER卫星 电场数据处理 HHT方法 本征模态分解 本征模态函数 |
Study on the electric field data processing recorded by satellite |
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| AN Zhang-hui , YUAN Li-huang , FAN Ying-ying , LIU Jun , TAN Da-cheng , CHEN Jun-ying , ZHENG Guo-lei.Study on the electric field data processing recorded by satellite[J].Progress in Geophysics,2012,27(1):83-91. | |
| Authors: | AN Zhang-hui YUAN Li-huang FAN Ying-ying LIU Jun TAN Da-cheng CHEN Jun-ying ZHENG Guo-lei |
| Institution: | 1,2(1.Lanzhou Base of Institute of Earthquake Prediction CEA,Gansu,Lanzhou 730000,China; 2.Lanzhou Institute of Seismology CEA,Gansu,Lanzhou 730000,China; 3.School of Science,Lanzhou University of Technology,Gansu,Lanzhou 730050,China) |
| Abstract: | In this paper,a new method HHT is invented to deal with non-linear and non-stationary data is introduced.It is used to processing the electric field data(ULF band) recorded by satellite.The electric field data observed by DEMETER satellite two days before Philippine M6.0 earthquake has been processing.HHT time-frequency spectrums are obtained.In addition,Wavelet transform time-frequency spectrum are obtained by using the SWAN software,which provided by the network of DEMETER satellite center.Compared the two spectrums,the two methods have the same ability in describing the position of abnormal signal appeared,but the method of HHT can describe with clarity the abnormal signal than the wavelet transform.All these study in this paper will establish a good groundwork for the farther work. |
| Keywords: | DEMETER satellite electric field data processing Hilbert-Huang Transform empirical mode decomposition intrinsic mode function |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |