f-x域去噪方法研究  

A study on noise-suppression method in f-x domain

作　　者：康冶[1] 于承业[1] 贾卧[1] 王春梅[1] 陈颖[1] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院

出　　处：《石油地球物理勘探》2003年第2期136-138,共3页Oil Geophysical Prospecting

摘　　要：本文提出一种拟线性化变换的方法 ,将地震数据进行拟线性变换 ,在此基础上进行 f - x域预测去噪 ,具体步骤为 :1利用正交多项式逼近技术 ,采用最大相似系数准则 ,计算出描述地震同相轴走势的相关系数 ;2利用相关系数对地震数据在空间上做拟线性化变换 ,对变换后的地震数据进行奇异滤波和 f - x域有效信号预测 ;3对预测结果进行反变换。理论数据试算和实际资料处理表明 ,本文提出的去噪方法具有去噪能力强、振幅保真性好、不降低纵向分辨率等特点 。The paper proposed a pseudo linear transform method that can transform seismic data in pseudo linear fashion,and the predicted noise suppression in f x domain can be carried out on that basis.The concrete steps are follows:① using orthonormal polynomial approximation and maximum similar coefficient criterion to calculate correlation factors that describe the trend of seismic events;②using correlation factors to make pseudo linear transform of seismic data in space,to carry out singular filtering of transformed seismic data and to predict the useful signal in f x domain;③ inverse transform of predicted results.The theoretical and real data tests show that the noise suppression method presented by the paper has advantages of strong noise suppression ability,good amplitude fidelity and non destructive vertical resolution,that is suitable for data processing in complicated region.

关 键 词：f-x域去噪方法 正交多项式逼近 线性交换 地震数据 地震勘探 

分 类 号：P631.443[天文地球—地质矿产勘探]