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用于速度自动拾取的路径积分优化法与光顺处理技术

DOI: 10.6038/cjg20130125, PP. 246-254

Keywords: 速度谱,光顺处理,Viterbi算法,叠加速度,自动拾取

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Abstract:

将用于图像处理的光顺技术引用到速度谱能量团曲面的处理环节,借以提高速度谱的分辨率,为最终获得高精确解提供一全新的途径.具体思路是基于路径积分优化法——Viterbi算法所具有的自动搜寻及获取最优解的功能,将其应用于地震资料处理中的速度自动拾取,使其向前做最大"能量团"的积分向后递归计算最优解——叠加速度,但这种解的准确性往往与所定义的目标函数——速度谱的分辨率有关.演算结果表明,Viterbi算法与关顺处理技术的有机结合,不仅提高了速度提取的精度,而且实现了速度的自动拾取,可提高常规地震资料处理的效率,从而可快捷地为叠前深度偏移提供所需初始速度模型.

References

[1]  Toldi J. Velocity analysis without picking. Stanford: Stanford University, 1985.
[2]  McEliece R J. The Theory of Information and Coding. Massachusetts: Addison-Wesley Publishing Company, 1977.
[3]  Yoshua B. Markovian Models for Sequential Data. http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.40.5337. 1996-10-22.
[4]  Méndez L A T. Viterbi Algorithm in Text Recognition: Term project for course: 308-644B. Montreal: McGill University, 1998.
[5]  Zhang L. Automatic picking and its applications. SEP(70), 1990: 275-292.
[6]  林年添, 柴慧婵, 魏立杰等. 速度谱曲面的光顺处理及其作用. 地球物理学进展, 2011, 26(3): 311-316. Lin N T, Chai H C, Wei L J, et al. Surface fairing with its action on the Velocity Spectrum. Progress in Geophysics (in Chinese), 2011, 26(3): 311-316.
[7]  杨长春, 倪彤光. 一种高效的混合曲面光顺算法. 计算机应用, 2005, 25(11): 2609-2611. Yang C C, Ni T G. Efficient hybrid algorithm for mesh smoothing of surfaces. Journal of Computer Applications (in Chinese), 2005, 25(11): 2609-2611.
[8]  Luo X N, Liu N, Gao C Y. Fairing geometric modeling based on 4-point interpolatory subdivision scheme. Journal of Computational and Applied Mathematics, 2004, 163(1): 189-197.
[9]  Zhang C N, Zhang P F, Cheng F H. Fairing spline curves and surfaces by minimizing energy. Computer-Aided Design, 2001, 33(13): 913-923.
[10]  甘屹, 齐从谦, 陈亚洲. 基于遗传算法的曲线曲面光顺. 同济大学学报 (自然科学版), 2002, 30(3): 322-325, 334. Gan Y, Qi C Q, Chen Y Z. Smoothing of curves and surfaces based on genetic algorithm. Journal of Tongji University (Natural Science) (in Chinese), 2002, 30(3): 322-325, 334.
[11]  Renka J R. Constructing fair curves and surfaces with a Sobolev gradient method. Computer Aided Geometric Design, 2004, 21(2): 137-149.
[12]  Xu G L. Surface fairing and featuring by mean curvature motions. Journal of Computational and Applied Mathematics, 2004, 163(1): 295-309.
[13]  林年添. 保重心脉冲压缩滤波及其在速度自动拾取中的应用. 北京: 中国科学院研究生院, 2004. Lin N T. Automatic Picking Velocity by Gravity Center Preserved Pulse Compressed Filter and the Viterbi Algorithm (in Chinese). Beijing: Chinese Academy of Sciences, 2004.
[14]  Zhang L, Claerbout J. Automatic dip-picking by non-linear optimization. SEP(67), 1990: 123-138.
[15]  陈志德, 刘振宽, 李成斌. 三维叠前深度偏移速度分析及蒙特卡洛自动层速度拾取. 地球物理学报, 2002, 45(2): 246-254. Chen Z D, Liu Z K, Li C B. 3-D Pre-stack depth migration velocity analysis and automatic monte carlo velocity picking in depth. Chinese J. Geophys. (in Chinese), 2002, 45(2): 246-254.
[16]  林年添, 刘洪, 李建勇. 基于Viterbi算法的复杂地质体速度约束化自动拾取. 地球物理学进展, 2004, 19(2): 311-316. Lin N T, Liu H, Li J Y. Automatic picking velocity by the viterbi algorithm for the complex geological case. Progress in Geophysics (in Chinese), 2004, 19(2): 311-316.
[17]  Pérez-Arribas F, Suárez-Suárez J A, Fernández-Jambrina L. Automatic surface modelling of a ship hull. Computer Aided Design, 2006, 38(6): 584-594.
[18]  李学艺, 姜虹, 陈松等. 基于马尔可夫随机场的曲面光顺算法. 西安交通大学学报, 2003, 37(3): 241-244. Li X Y, Jiang H, Chen S, et al. Surface fairing algorithm based on Markov random fields. Journal of Xi''an Jiaotong University (in Chinese), 2003, 37(3): 241-244.
[19]  Sari?z E. An optimization approach for fairing of ship hull forms. Ocean Engineering, 2006, 33(16): 2105-2118.
[20]  Taner M T, Koehler F, Sheriff R E. Complex seismic trace analysis. Geophysics, 1979, 44(6): 1041-1063.

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