摘要
较为详细地介绍了一种新的非线性、非平稳信号的处理方法 HHT(Hilbert-Huang Transform)方法,阐述了该方法的创新性,并对其有效性进行了数值检验.把该方法应用于新疆和田地电场台站和陕西西安地电场台站的观测数据,得到了各自的经验模态分解图、HHT时频图和相应的边际谱图,从这些图中可以清楚看出各自的频谱特征.最后阐述了HHT方法在地电场数据处理中的应用前景.
In this paper,we present a new method HHT（Hilbert-Huang Transform）which is invented to deal with non-linear and non-stationary data,and discuss its innovation and validity.We have applied this method to the observation data of the Hetian Geoelectric station and Xian Geoelectric station,and obtained diagrams of empirical mode decomposition,time-frequency and marginal spectrum about HHT.These figures show the spectral characteristics about two stations.Finally,the challenges and opportunities have been discussed about the application of HHT method to Geoelectric field data processing.
出处
《地球物理学进展》
CSCD
北大核心
2010年第2期525-532,共8页
Progress in Geophysics
基金
2009-5-15基金项目国家科技支撑计划(2008BAC35B01-8)
甘肃省地震局
中国地震局兰州地震研究所青年地震科学基金(200902)
中国地震局地震预测研究所基本科研业务费项目(2007691)联合资助
关键词
HHT方法
经验模态分解
本征模态函数
边际谱
地电场数据处理
Hilbert-Huang Transform
empirical mode decomposition
intrinsic mode function
marginal spectrum
Geoelectric field data processing
