石油物探2011，Vol.50Issue(4)：367-372,397,7.DOI:10.3969/j.issn.1000-1441.2011.04.009
联合连续小波变换和脊波变换的面波衰减方法及应用
摘要
Abstract
Based on the high amplitude, low frequency and low speed characteristics of ground-roll, and according to the distribution characteristic of ground-roll and reflection wave in wavelet domain and ridgelet domain,a ground-roll attenuation method joint one-dimensional continuous wavelet transform and ridgelet transform is proposed. Firstly, according to the low frequency and low speed characteristics of ground-roll, one-dimension continuous wavelet transform is used to attenuate high energy ground-roll based on its time-frequency localization properties. Then, ridgelet transform is applied to transform the seismic data to 3D space on time, scale and ray parameters. Finally, the residual ground-roll is attenuated in ridgelet domain. The processing results of synthetic and actual data show that the method is effective in attenuating ground-roll, and can preserve low frequency component of the reflection wave, which provides better foundation for continuous data processing and analysis.关键词
小波变换/脊波变换/时频局部化/面波衰减/随机噪声衰减Key words
wavelet transform/ridgelet transform/time-frequency localization/ground-ro.ll attenuation/random noise attenuation分类
天文与地球科学引用本文复制引用
包乾宗,李庆春,陈文超,高静怀..联合连续小波变换和脊波变换的面波衰减方法及应用[J].石油物探,2011,50(4):367-372,397,7.基金项目
国家高技术研究发展计划(863)项目(2006AA09A102-11)、国家自然科学基金重点项目(40730424)、面上项目(40674064、41074089)、博士后基金项目(20100471589)和长安大学科技创新基础研究支持计划项目(CHD2009JC033)联合资助. （863）
