基于F-X域预测和全变分的串行滤波器

英文篇名：Cascaded filter based on F-X prediction and total variation filter
中文刊名：石油地球物理勘探
英文刊名：Oil Geophysical Prospecting
作者：魏海涛 ; 陆文凯 ; 郑晓东
英文作者：Wei Hai-tao1 ; Lu Wen-kai1 and Zheng Xiao-dong2.1.Department of Automation ; State Key Laboratory of Intelligent Technology and Systems ; Tsinghua National Laboratory for Information Science and Technology ; Tsinghua University ; Beijing 100084 ; China2.Research Institute of Petroleum Exploration & Development ; CNPC ; Beijing 100083 ; China
中文关键词：F-X域预测滤波 ; 全变分 ; 串行滤波 ; 随机噪声 ; 信噪比 ; 保真度
英文关键词：F-X prediction ; total variation ; cascaded filter ; random noise ; S/N ; signal preservation
出版日期：2011-10-15
机构：清华大学自动化系智能技术与系统国家重点实验室清华信息科学与技术国家实验室(筹);中国石油勘探开发研究院;
年：2011
期：05
出版单位：石油地球物理勘探

摘要

传统的F-X域预测滤波方法在理论上需要假设地震同相轴呈线性,当假设条件不满足时,在分离有效信号和随机噪声时会产生信号畸变。本文提出一种基于F-X域预测滤波和全变分滤波的串行压制噪声方法,对F-X域预测滤波的残差信号进行全变分滤波,并将全变分滤波结果与F-X域预测滤波结果相加作为有效信号的估计。对合成地震数据和实际地震数据的处理结果均表明,相对于F-X域预测滤波法,本文方法在压制随机噪声的同时能更好地保护有效信号,即显著提高信号的保真度。
Random noise attenuation techniques are very important in seismic signal processing.They are used to improve seismic data SNR by extracting signals.The conventional F-X prediction filter assumes that the trajectories of the seismic events are linear.It will distort seismic signals if the linear events assumption is not satisfied.In this paper,we propose a cascaded filter,which is based on F-X prediction and total variation(TV) filter,for random noise attenuation.In the proposed method,the error signal,which is the difference between the original data and the filtering result obtained by F-X prediction method,is filtered further by the TV filter.Then the results obtained by F-X prediction and TV methods are combined together as the final output.The results of the synthetic and real data experiments show that the proposed method achieves better performance on the signal preservation than the F-X prediction method does.

引文

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