二进小波变换方法的地震信号分时分频去噪处理  

SEISMIC DATA TIME-FREQUENCY DOMAIN DENOISING BASED ON DYADIC WAVELET TRANSFORM

作　　者：章珂[1] 刘贵忠[1] 邹大文 钱俊生[1] 李凤歧[1] 

机构地区：[1]西安交通大学电信学院信息工程研究所,长庆石油勘探局地球物理勘探处

出　　处：《地球物理学报》1996年第2期265-271,共7页Chinese Journal of Geophysics

摘　　要：应用二进小波变换理论，对地震记录剖面进行小波分解，在小波变换域，对各分量剖面进行分时分频相关分析，并依此进行加权处理，最后通过小波反交换算法恢复出地震记录剖面．经实验该方法对衰减地震信号的噪声具有比较好的效果．A new method for seismic data denoising isproposed in this paper. We decomgose every trace of a seitmic section using dyadic wavelet transform, so several sub-sections are formed in time-frequency domain. To each sub-section a correlation analysis is made and every trace of each sub-section is weighted according to the analytic result. It is calied weighting denoising processing.From the sub-sections we recover the seismic section in which noise has been compressed. We also illustrate the performance of the method using real-world seismic data.

关 键 词：二进小波变换 地震信号 去噪法 地震勘探 

分 类 号：P631.443[天文地球—地质矿产勘探]