基于二维三次卷积插值算法的波前构建射线追踪

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Ray-Tracing of Wavefront Construction by Bicubic Convolution Interpolation

HAN Fu-xing^1,2,SUN Jian-guo^1,2,YANG Hao^1,2

1.College of GeoExploration Science and Technology, Jilin University, Changchun 130026,China;2.Laboratory for Integrated Geophysical Interpretation Theory, Ministry for Land and Resources, Changchun 130026,China

Received:2007-06-28 Revised:1900-01-01 Online:2008-03-26 Published:2008-03-26
Contact: HAN Fu-xing

Abstract

Abstract: To overcome the problems of the interpolation of the velocity and velocity derivative on non-grid during wavefront construction, a more accurate interpolation algorithm, called bicubic convolution interpolation, has been presented. Numerical results show that the interpolation method can get more accurate rays. And comparing with the double 3-order polynomial interpolation method, the velocity and velocity derivative on non-grid in wavefront construction can be computed more accurate and faster by the bicubic interpolation method.

Key words: bicubic convolution interpolation, rays, wavefront, wavefront construction

CLC Number:

P631.443

HAN Fu-xing,SUN Jian-guo,YANG Hao. Ray-Tracing of Wavefront Construction by Bicubic Convolution Interpolation[J].J4, 2008, 38(2): 336-0340.

References

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