基于Viterbi算法的复杂地质体速度约束化自动拾取
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摘要
对于复杂地质体而言,由于各种因素的影响,速度信息中往往会包含一些假的速度信息(如速度异常值).因此,如何在速度谱能量团(由所定义目标函数———相似系数法等得到)中拾取有效的叠加速度,是地震数据处理中一个重要的环节.本文,所引入的Viterbi算法具有约束化自动搜寻并获取最优解的功能,将其应用于速度的自动拾取中,它能向前做最大"能量团"的积分并向后递归计算最优解———叠加速度,是一种实现速度自动优化拾取的便利工具.
For the complex geological case, the velocity calculated, generally, covers some false information, such as velocity abnormity, because of variety of factor. Therefore, it is very important to acquire the correct the stacking velocity from the velocity spectrum, which calculated by the function of semblance object. In this paper, we introduce the Viterbi algorithm and apply it to auto pick the stack velocity. Here, the Viterbi algorithm makes the rule to integral the max velocity spectrum ("energy group") forward and to get the optimal solution in recursion backward. 
引文
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