基于多小波变换提高地震数据的分辨率

英文篇名：Improving the Resolution Ratio of Seismic Data by Multiwavelets Transformation
中文刊名：数学的实践与认识
英文刊名：Mathematics in Practice and Theory
作者：刘瑞 ; 何文章 ; 吴爱弟 ; 马云飞
英文作者：LIU Rui ; HE Wen-zhang ; WU Ai-di ; MA Yun-fei (School of Science ; Tianjin University of Technology and Education ; Tianjin ; 300222 China)
中文关键词：多小波变换 ; 分频处理函数 ; 分辨率
英文关键词：multiwavelet transform ; frequency division functions ; resolution ratio
出版日期：2011-10-23
机构：天津职业技术师范大学理学院;
年：2011
期：20
出版单位：数学的实践与认识

摘要

给出了设计接近地震子波的小波函数方法,使得地震信号的小波分解能量相对集中,有利于做各种处理;通过选出最匹配子波的的小波函数,做多小波变换;利用分频处理函数来补偿石油勘探中地震数据中损失的高频成分,以提高石油勘探中地震数据分辨率.通过对反射信号的高频成分进行补偿,可使地震剖面的主频得到很大提高,频宽得到扩展,可获得较高分辨率的地震剖面.从实际数据处理结果可以看出,方法是可行的且是有效的.
With the designation of method of wavelet function which is closer to the seismic data,the divided wavelet energy of the seismic data relatively centralizes and becomes easy to deal with;By choosing compatible wavelet function,multiwavelet transform is done; Frequency division functions can compensate the loss of the high frequency part of the seismic data in oil-field prospecting so that the resolution ratio of the seismic data in oilfield prospecting is improved.Compensating the high frequency part of the reflected signal, greatly raises the main frequency of the seismic section plane and expands the frequency width,thus achieves a seismic section plane with a higher resolution ratio.Practical data processing results show that this method is feasible and effective.

引文

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