新疆石油地质 ›› 2005, Vol. 26 ›› Issue (3): 272-274.

• 油气勘探 • 上一篇    下一篇

谱分析法对小波母函数的探讨及小波时频分析

刘兰锋1, 刘全新2, 雍学善2, 高建虎2   

  1. 1.中国石油 石油勘探开发研究院,北京 100083;
    2.中国石油 石油勘探开发研究院 西北分院,兰州 730020
  • 收稿日期:2004-10-29 出版日期:2005-06-01 发布日期:2020-11-23
  • 作者简介:刘兰锋(1979-),男,山东成武人,在读硕士研究生,地球物理,(Tel)13679421154(E-mail)sunboy.11f@163.com.

Discussion of W avelet Mother Function by Using Spectrum Analysis Method and Analysis of Wavelet Time F requency

LIU Lan-feng1, LIU Quan-xin2, YONG Xue-shan2, GAO Jian-hu2   

  1. 1. Research Institute of Petroleum Ex ploration and Development, Pe troChina, Beijing 100083, china;
    2. Northwest Institute, Research Institute of Petroleum Exploration and development, PetroChina, Gansu, Lanzhou 730020, China
  • Received:2004-10-29 Online:2005-06-01 Published:2020-11-23

摘要: 应用谱分析的方法,对小波母函数作了深入的探讨。针对Morlet小波通过理论推导和数据试验,确定了衰减因子与主频的关系、衰减因子与尺度参数的关系、衰减因子与频率域滤波器品质因子(带宽)的关系。从时频分析原理出发,并用谱分析法确定的小波函数,进行连续小波变换,实现了小波时频分析。通过对理论模型试验分析验证了其正确性,并在实际应用中与傅氏变换做了对比,取得了良好的效果。

关键词: 地震, 谱分析, 函数, 小波, 因子, 衰减

Abstract: In-depth discussion of wavelet mother function is made by using spectrum analysis method. Aiming at Morlet wavelet, the relations between attenuation factor and main frequency, between attenuation factor and sc ale parameter, between attenuation factor and quality factor of filter are deduced by theory deduction and data experiment. Based on the time-frequency analysis principle, the wavelet function determined by spectrum analysis method is subjected to continuous wavelet transform followed by having realized wavelet time-frequency analysis. The validity is verified through theoretical model analysis, and in practical application, satisfactory results are gained by comparing with that from Fourier transform.

Key words: seismic interpretation, spectrum analysis, fiunetion, waveletr, factor, attenuation

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