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《Chinese Journal of Geophysics》 2014-09
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Anisotropic Radon transform and its application to demultiple

GONG Xiang-Bo;HAN Li-Guo;LI Hong-Jian;Geo-Exploration Science and Technology Institute,Jilin University;  
For the seismic data acquired in the anisotropic medium and with large offset,although we use the high-resolution hyperbolic Radon transform,the energy of the Radon domain is still not convergent.In order to overcome this problem,the influence of the anisotropic factor is considered in the integral path of Radon transform.By introducing the anisotropic anellipticity parameters η from non-hyperbolic moveout formula,the travel-time curve can be accurately described in the horizontal layer for large offset.We derive the integral equation of forward and inverse Radon transform with three parameters,which are the offset,the slowness and the anellipticity.For time-varying of anisotropic Radon transform,the fast algorithm in the frequency domain is not applicable in the process of discretization.This paper adopt the optimal semblance weighted Gauss-Seidel iterative algorithm which not only keeps the high resolution but also has the high calculation efficiency.In the examples of the anisotropic model and real marine seismic data with large offset,this method shows the effective and efficient application to demultiple.
【Fund】: 国家自然科学基金项目(41204078);; 中国博士后科学基金(2012M520679);; 吉林大学青年教师创新项目(450060481201)联合资助
【CateGory Index】: P631.4
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