石油物探2018，Vol.57Issue(1)：45-49,5.DOI:10.3969/j.issn.1000-1441.2018.01.006
一种均匀网格反泄露傅里叶变换的频率域高效实现方法
Efficient implementation of regular grid antileakage Fourier transform in the frequency domain
摘要
Abstract
The antileakage Fourier transform (ALFT)has been widely used in seismic data regularization,multi-dimensional de-noising,and data compression.However,the computational efficiency of regular grid ALFT is not high enough in the time domain to process massive seismic data,because it implements one discrete Fourier transform to convert the signal from the time domain to the frequency domain in each iteration.In this paper,we focus on an implementation of the ALFT in the frequency domain to im-prove its efficiency.The method searches for the maximum Fourier coefficient and subtracts the SINC function in the frequency do-main,to avoid the discrete Fourier transform and the inverse discrete Fourier transform in each iteration.Tests on synthetic data show that the method can improve computational efficiency,while reducing discernible frequency leakage and improving sparse representation.关键词
反泄露傅里叶变换/均匀网格/SINC函数/稀疏表示/频谱泄露/数据压缩Key words
antileakage Fourier transform/regular grid/SINC function/sparse representation/spectrum leakage/data compression分类
天文与地球科学引用本文复制引用
陈建友,王晓凯,杨长春..一种均匀网格反泄露傅里叶变换的频率域高效实现方法[J].石油物探,2018,57(1):45-49,5.基金项目
国家自然科学基金(41504092,41774135)、中国博士后科学基金(2016T90925,2015M572567)及中央高校基本科研 业 务 费 专 项 资 金(xjj2016065)联合资助. This research is financially supported by the National Natural Science Foundation of China (Grant Nos.41504092,41774135),China Postdoctoral Science Foundation (Grant Nos.2016T90925,2015M572567 ),and the Fundamental Research Funds for the Central Universities (Grant No. xjj2016065). （41504092,41774135）
