基于时频分析的地层吸收系数计算方法  

A method for calculating layer absorption coefficient based on time-frequency analysis

作　　者：徐峰[1] 冯诗齐 

机构地区：[1]中国石油化工股份有限公司上海海洋油气分公司研究院,上海200120

出　　处：《海洋石油》2007年第4期1-8,共8页Offshore Oil

摘　　要：时频分析方法是傅立叶变换及分析的发展,是地震信号处理的重要分析工具,其方法很多、应用广泛。重点介绍基于多种小波基的时频分析方法及S变换与广义S变换方法的时频分析方法,并应用于计算地层吸收系数,其结果优于常规的FFT方法,具有较高的分辨率。Time-frequency analysis is developed from Fourier transform and Fourier analysis, and it is also an important tool for seismic signal processing. This paper discusses the method of time-frequency analysis, which is based on multiple wavelet bases and S-transform or general S-transform, and it＇ s also used to calculate layer absorption coefficient. The results are better than normal FFT method and have higher resolution.

关 键 词：时频分析 连续小波变换 广义S变换 吸收系数 

分 类 号：P631.443[天文地球—地质矿产勘探]