论文部分内容阅读
层析反演的核心是敏感核函数的求取和旅行时反演方程的建立.在射线理论下,射线追踪技术是计算敏感核函数和旅行时的主要方法,因此初至层析的实现需要有一种可以准确追踪初至波路径的射线追踪方法.本文推导了抛物旅行时插值射线追踪公式,提出了基于抛物旅行时插值的最短路径射线追踪方法.理论模型和实际资料处理结果表明,利用该方法实现初至层析速度建模可行.
The core of tomosynthesis inversion is the calculation of sensitive kernel function and the inversion equation of travel time.Under the ray theory, the ray tracing technique is the main method to calculate the sensitive kernel function and travel time, so the implementation of first-arrival tomography There is a ray tracing method that can accurately track the first arrival wave path.This paper derives the interpolation ray tracing formula when parabolic travel and proposes the shortest path ray tracing method based on parabolic travel interpolation.The theoretical model and actual data processing results show that using this Method to achieve the first-arrival tomography speed modeling feasible.