Abstract:Usual scalar calculation method can not be parallel operation on a vector computer。YH well fused computer,to make vector supercomputer,frequently uses parallel repeated operation and vector dual processing array technique.The vector algorithm may be used for the integral migration of 3D wave equation,it includes five essentials:(I)time-varying convoluticn of every horizontal stacled trace is made before summation;(2)dual symmetric vertical stacking tec'}nique is used;(3)recurrence algorithm is used so as to avoid evolution and improve accuracy;(4) horizontal stacked trace is transformed to a migrated trace by vector bit` string register as well as the compression and recovery; instruction functions of YH computer;(5)a migrated trace is fade by first multiplying a lengthened vector with a coefficient vector,then summing vectors.The vector algorithm was used to make 3D integral migraion proccssing of tl:c 3D seismic data from Gaochang area in Jianghan prospect.The processing speed and quality are much improved.
收稿日期: 1984-06-05
引用本文:
吴国明, 龚小金. 三维波动方程积分偏移向量算法[J]. 石油地球物理勘探, 1985, 20(2): 115-124,152.
Wu Guoming, Gong Xiaojin. Vector algorithm for integral migration of 3D wave equation. OGP, 1985, 20(2): 115-124,152.