频率空间（三维）F—XYZ域预测去噪技术

本文在二维频率空间Ｆ－ＸＹ域预测技术基础上提出了三维频率空间Ｆ－ＸＹＺ域预测去噪方法。其基本假设仍然是Ｆ－ＸＹＺ域的地震数据中有较信号具有可预测性，而随机噪声无此特性，该方法首先把地震数据变换到Ｆ－ＸＹＺ域，利用最小平方原理求取预测算子；然后将此预测算子应用到地震数据中，实现压制随机噪声的目的，最后把地震数据变换于时空域得到最终结果。理论模型试算与实际资料处理均表面，三维频率空间Ｆ－ＸＹＺ域预测去

Prediction noise elimination in F-XYZ domain

Prediction noise elimination in F-XYZ domain was developed on the basis of F-XY domain predictionl and its hypothesis is that in F-XYZ domain, useful seismicsignals are predictable, but random noises are not. This technique includes the fol-lowing steps:'. Convert seismic data int0 F-XYZ domain.. Use least square principle to obtain prediction operator.'. Apply prediction operator in seismic data to eliminate random noises.. Convert seismic data into time-space domain to get final result.Theoretical modeling and real data processing results indicate that predichonnoise elimination in F-XYZ domain is a very effective technique for eliminating ran-dom n0ises in 3-D prestack seismic data.