叠前深度逆时偏移成像的并行算法研究

英文篇名：Parallel Algorithm Research on Pre-stack Depth Reverse Time Migration Imaging
中文刊名：计算机工程
英文刊名：Computer Engineering
作者：张晓丹 ; 柯熙政 ; 张志禹
英文作者：ZHANG Xiao-dan ; KE Xi-zheng ; ZHANG Zhi-yu(Institute of Automation & Information Engineering ; Xi'an University of Technology ; Xi'an 710048 ; China)
中文关键词：逆时偏移 ; 稳定条件 ; 边界条件 ; 成像条件 ; 消息传递接口
英文关键词：Reverse Time Migration(RTM) ; stability condition ; boundary condition ; imaging condition ; Message Passing Interface(MPI)
出版日期：2011-10-05
机构：西安理工大学自动化与信息工程学院;
年：2011
期：19
出版单位：计算机工程

摘要

逆时偏移(RTM)成像波场逆推具有计算量大和运算速度慢的问题。为此,根据叠前深度RTM算法的特点,运用稳定条件、边界条件、成像条件3个要件并基于消息传递接口,提出全波波动方程叠前深度RTM成像并行算法。与传统柯西霍夫叠前深度偏移算法进行对比的结果表明,该算法能够较好地对地震数据进行偏移成像,成像效果优于传统算法并且并行速度较快。
The large calculation capacity and slow running speed restrict the development and application of Reverse Time Migration(RTM).The paper proposes a full wave equation pre-stack depth RTM parallel imaging method based on the characteristics of Message Passing Interface(MPI) and RTM which applies the three conditions,and compared with the Kirchhoff pre-stack depth method,results show that the efficiency of MPI parallel method is good,it can process the seismic data migration imaging well and the parallel speed is fast.

引文

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