基于小波包变换的地震数据时频分析方法

THE TIME-FREQUENCY ANALYSIS METHOD ABOUT SEISMIC DATA BASED ON WAVELET PACKET TRANSFORM

摘要:

介绍了瞬时频率的概念和瞬态谱的小波包计算方法,并结合时间域模拟信号给出了其时频分布.结果表明,小波包变换可准确描述地震信号的时变特征,值得推广应用.

Abstract:

The conception of transient frequency and calculation method of wavelet packet are introduced,and time-frequency distribution about simulation and actual seismic signals is given.The results indicates that wavelet packet transform may be used to describe the characteristics of seismic signals at any moment and is worth applying to processing seismic signals.