%0 Journal Article
%T Fast reconstruction of wave-field propagator in wave-equation depth migration<br>波动方程深度偏移波场延拓算子的快速重建
%A LU Xiao-lin
%A <br>吕小林
%J 地球物理学进展
%D 2005
%I 
%X Computer's capacity and memory are key factors in pre-stack depth migration based on wave-equation. Nowadays, pre-stack depth migration comes into use in industrial production along with the appearance of Beowulf PC-clusters, but it still takes much longer time than traditional post-stack migration. In this paper, we smooth the propagator with cubic spline function then reconstruct the propagator adopting sample function. Thus we can reduce the use of computer's memory and in the meantime ensure accuracy, so that the whole dat-processing time is shortened.
%K pre-stack depth migration
%K phase-shift propagator
%K cubic spline<br>叠前深度偏移
%K 相移算子
%K 三次样条
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=1E44AE713D8A6DE0&jid=65CE641AB2DEAAF8B2D39ECB6B6B6C80&aid=2CFA931A4FA2E2D8&yid=2DD7160C83D0ACED&vid=A04140E723CB732E&iid=CA4FD0336C81A37A&sid=B91E8C6D6FE990DB&eid=D3E34374A0D77D7F&journal_id=1004-2903&journal_name=地球物理学进展&referenced_num=9&reference_num=7