Radon变换在纵横波分离中的应用研究  

Investigation of the Application of Radon Transform in the Separation of Vertical and Horizontal Waves

作　　者：田继东[1] 周文静[1] 陈普春[1] 宋国杰[1] 余先政 

机构地区：[1]西南石油大学理学院,成都610500 [2]西南石油大学石油与天然气工程学院,成都610500

出　　处：《科学技术与工程》2016年第27期106-109,共4页Science Technology and Engineering

基　　金：西南石油大学地震波传播与成像青年科技创新团队(2015CXTD07)资助

摘　　要：波场分离是把弹性波场分解成纯纵波和纯横波两部分,从而能更准确、有效地描述地下介质信息。分析了目前常用的P-P波和P-SV波分离方法(Radon变换法),将其应用到全波场的纵横波分离;并结合纵横波的运动学和动力学特征,给出了3种不同Radon变换法分解纵横波的具体计算公式。针对不同的Radon变换法设计合理的参数,对理论模型的正演模拟数据进行纵横波分解试算。计算精度和计算效率的对比结果表明在全波场纵横波的分离过程中,高分辨率Radon变换的分离效果比较好。The wave field separation is to decompose the elastic wave field into two parts,the pure longitudinal wave and the pure shear wave,consequently the waves can describe the information of underground medium more accurately and effectively.The method（radon transform） of P-P and P-SV wavefield separation which commonly used now were analyzed.Three simple formulae of separating wave field were presented under radon transform method and the movement and dynamic characteristic of the compressional wave and shear wave were combined.The results of theoretical model test show that the separation efficiency of high resolution Radon transform with reasonable form parameters is better.

关 键 词：波场分离 Τ-P变换 抛物线Radon变换 高分辨率RADON变换 频率域 

分 类 号：P539.4[天文地球—古生物学与地层学]