基于时频分析的Q值提取研究  

Research on the extraction of Q value based on improved generalized S transform

作　　者：陈爱飞 李红星 李倩宇 

机构地区：东华理工大学地球物理与测控学院,江西南昌330013

出　　处：《世界有色金属》2016年第9期48-50,共3页World Nonferrous Metals

基　　金：国家自然科学基金（编号：41104073、41364004）资助

摘　　要：品质因子Q在剖析岩性特征以及预测出储层特点这两方面具有极其重要的作用。常规谱比法必须合理解决时窗的选择问题。本文改良了现有的S变换窗函数,使其更精确的拾取到地震波传播到界面时所对应的瞬时频谱。同时与基于S变换方法对比,研究其抗噪性,从而证明了该方法的有效性。It is important to measure the quality factor Q in lithology analysis and reservoir prediction. However, the window selection is always a main issue in this traditional ratio method. In this paper, with the improved generalized S transform, we can extract the instantaneous frequency spectrum of the upper and lower interfaces of formation, and the quality factor Q value is obtained by the spectral ratio method. At the same time, compared with the method based on S transform, the anti noise performance of the method is studied.

关 键 词：品质因子Q值 广义S变换 改进的广义S变换 谱比法 

分 类 号：P631[天文地球—地质矿产勘探]