基于两步弥散算子的共反射面元射线束成像方法研究  

The CRS-BEAM-PSDM based on two-step-smearing operator

作　　者：陈宝书 杨锴[2] 汪小将 CHEN BaoShu;YANG Kai;WANG XiaoJiang(CNOOC Research Institute Company Limited,Beijing 100027,China;State Key Laboratory of Marine Geology,Tongji University,Shanghai 200092,China)

机构地区：[1]中海油研究总院有限责任公司,北京100027 [2]同济大学海洋地质国家重点实验室,上海200092

出　　处：《地球物理学报》2020年第1期270-286,共17页Chinese Journal of Geophysics

基　　金：国家自然科学基金面上项目(41630964,41574098,41874118);国家科技重大专项课题(2016ZX05026-001-003)联合资助

摘　　要：基于克希霍夫统一成像理论,对共反射面元射线束成像方法进行了深入分析.通过这种分析可以得到一种新的共反射面元射线束类成像实现方式:基于两步弥散算子的共反射面元射线束类成像方法.当仅实施第一步弥散时,即可获得信噪比大幅提高同时更为规则的叠前道集.二维、三维的理论和实际数据算例证实了上述观点.Based on the unified Kirchhoff imaging theory,we provide a deep analysis about the Common-Reflection-Surface(CRS)Beam Prestack Depth Migration(PSDM).With such an analysis,a novel two-step-smearing operator based CRS-beam PSDM method is presented.For this algorithm,when only the first smearing is implemented,a signal/noise ratio enhanced and a more regularized prestack dataset can be obtained.The abolv points are demonstrated by some 2D and 3D synthetic and real datasets.

关 键 词：CRS射线束成像方法 克希霍夫统一成像理论 两步弥散算子 

分 类 号：P631[天文地球—地质矿产勘探]