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固体潮时频分析新方法
引用本文:周挚,山秀明,梁虹,杜爱明,全海燕,张婕,杜昌寿,杨配新,杨胜梅.固体潮时频分析新方法[J].地震研究,2005,28(4):334-339.
作者姓名:周挚  山秀明  梁虹  杜爱明  全海燕  张婕  杜昌寿  杨配新  杨胜梅
作者单位:1. 清华大学电子工程系,北京,100084;云南省地震局,昆明,650224
2. 清华大学电子工程系,北京,100084
3. 云南大学信息学院,昆明,650091
4. 昆明理工大学信息工程与自动化学院,昆明,650051
5. 云南国防工业职业技术学院,昆明,650222
6. 云南省地震局,昆明,650224
摘    要:对传统时频分析方法的特点和局限性作了介绍。采用Huang.Hilbert Transformation方法分析了固体潮数据,即利用经验模态分解,将复杂信号分解成有限个本征模态函数之和,求取三维时频空间的Hilbert谱。仿真实验和重力固体潮实例分析表明,该方法适用于调频调幅信号特征的提取。

关 键 词:固体潮  非线性非平稳信号  时频分析  经验模态分解  Hilbert变换
文章编号:1000-0666-(2005)04-0334-06
收稿时间:2005-03-02
修稿时间:2005年3月2日

A New Approach of Earth Tides Time-Frequency Analysis
ZHOU Zhi,SHAN Xiu-ming,LIANG Hong,DU Ai-Ming,QUAN Hai-yan,ZHNAG Jie,DU Chang-shou,YANG Pei-xin,YANG Sheng-mei.A New Approach of Earth Tides Time-Frequency Analysis[J].Journal of Seismological Research,2005,28(4):334-339.
Authors:ZHOU Zhi  SHAN Xiu-ming  LIANG Hong  DU Ai-Ming  QUAN Hai-yan  ZHNAG Jie  DU Chang-shou  YANG Pei-xin  YANG Sheng-mei
Institution:1. Electronic Engineering Department, Tsinghua University, Beijing 100084, China; 2. Earthquake Administration of Yunnan Province, Kunming 650224, China;3. Information School, Yunnan University, Kunming 650091, China;4. Information Engineering and Automatization School, Kunraing University of Science and Technology, Kunming 650051, China;5. Professional Technology College of National Defence Industry of Yunnan , Kunming 650222, China
Abstract:On the basis of analyzing the feature and limits of the conventional time-frequency analysis methods,we use Huang-Hilbert Transformation(HHT) to analyze solid tide data,i.e.,use empirical mode decomposition to decompose complicated signal into the sum of finite intrinsic mode functions,and construct a 3D energy-frequency-time Hibert spectra of the data.The emulational signals and the gravity tide signal are analyzed using the HHT method,which turns out that the method is suited for the analysis of AM-FM signal.
Keywords:HHT
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