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作者在文中对三维任意界面情况下的两点间射线追踪问题进行了研究 ,从 Fermat原理出发 ,对射线路径上的旅行时 ,采用一阶 Taylor不完全展开等办法 ,推出了三维情况下计算射线路径的整体迭代算法。并通过模型计算证明了本方法的稳健性以及计算的高精确度和高效率。为三维结构下地震偏移和层析成像提供了一种可行的射线追踪方法。
In this paper, the problem of ray tracing between two points under three-dimensional arbitrary interface is studied. Based on the Fermat principle, the first-order Taylor incomplete expansion and other methods are used to calculate the ray The Whole Iteration Algorithm of Paths. Through the model calculation, the robustness of the method and the high accuracy and efficiency of the calculation are proved. It provides a feasible ray tracing method for seismic migration and tomography under three-dimensional structure.