【摘要】 采用多级中值滤波分离混采数据,可以很好地保持单炮的有效信息;对分离后的单炮数据,采用双曲Radon变换进行地震数据道重建,可以在Radon域获得极高的分辨率从而准确地重建地震数据。单炮道重建时,通过稀疏约束控制Radon变换来提高地震数据的重建精度。双曲Radon变换计算耗时较长,在算子求解时,本文采用快速迭代收缩阈值算法(FISTA),明显加快收敛速度,提高计算效率。模拟数据和实际数据表明,采用多级中值滤波和双曲Radon变换的方法重建混采地震数据可以获得较高的重建精度。更多还原

【Abstract】 The effective information of single shot record can be kept well by multilevel median filter in blended data separation. The seismic data track reconstruction of separated single shot seismic data can be done by hyperbolic Radon transform,which can get a high resolution in Radon region and improve the accuracy of reconstruction. The reconstruction accuracy of seismic data can be improved by using sparsity-constraint Radon transform in the single shot reconstruction. Hyperbolic Radon transform takes large amount of calculation time. During the operator solving,FISTA algorithm is used to speed up the rate of convergence and improve the calculation efficiency.The results of simulated data and real data demonstrate that the reconstruction of blended data by using multilevel median filter and hyperbolic Radon transform can achieve high reconstruction accuracy.更多还原