小波分解-STFT方法在地形变观测数据中的应用

英文篇名：APPLICATION OF WAVELET-DECOMPOSITION AND STFT METHOD IN CONTINUOUS DEFORMATION OBSERVATION ANALYSIS
中文刊名：大地测量与地球动力学
英文刊名：Journal of Geodesy and Geodynamics
作者：吕品姬 ; 赵斌 ; 陈志遥 ; 张燕 ; 李正媛
英文作者：Lü Pinji1 ; 2) ; Zhao Bin1 ; 2) ; Chen Zhiyao1 ; 2) ; Zhang Yan1 ; 2) and Li Zhengyuan3) 1)Institute of Seismology ; CEA ; Wuhan 430071 2)Crustal Movement Laboratory ; Wuhan 430071 3)China Earthquake Network Center ; Beijing 100045
中文关键词：小波分解 ; 短时傅里叶变换 ; 连续形变 ; 高频信号 ; 时频谱
英文关键词：wavelet decomposition ; Short Time Fourier Transform(STFT) ; continuous deformation observation ; high frequency signal ; time-frequency spetrum
出版日期：2011-10-15
机构：中国地震局地震研究所;地壳运动与地球观测实验室;中国地震台网中心;
年：2011
期：05
出版单位：大地测量与地球动力学

摘要

把小波分解与短时傅里叶变换(STFT)相结合,实现了对信号高频部分和低频部分的精细分解,同时给出信号高频部分的时频谱,结果直观明确,计算过程简单。这种方法不仅可以作为连续形变观测数据的常规分析方法,也可用于其他连续观测数据的分析。
By combining wavelet transform with STFT,finely decomposing the part of signal of high frequency from the part of low frequency has been realized and the time-frequency spectrum of the high frequency of the signal is given in the same time.Its results are direct and clear and the computational course is simple. This method can be used not only for analyzing continuous deformation observation data as a conventional method,but also can be used for other continuous observations.

引文

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