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传统的层析成象反演主要是减小实测旅行时与模拟旅行时之间的偏差。但这种处理方法往往导致不稳定,因而需要一些附加的制约以使其稳定.文中提出的随机表达式概括了这项技术,并使其建立在较为坚实的理论基础之上.射线延拓法随机反演(SIRC)是一种概率方法,它把推论的地质信息考虑在内,运用概率分布来描述数据的相关性及其误差,从而使不定性有可能依赖于所得结果.估算出的参数是用来描绘平滑后界面的 B 样条系数和层速度.文中用震源和接收器之间的延拓技术来进行射线追踪.通过求解由费玛原理导出的线性方程组,
The traditional tomographic inversion is mainly to reduce the deviation between the measured travel time and the simulated travel time. However, this approach often leads to instability, and therefore requires some additional constraints to stabilize the stochastic expression proposed in this paper to sum up the technology and make it based on a more solid theoretical basis.Ray extension method Stochastic inversion (SIRC) is a probabilistic approach that takes into account the inferential geologic information and uses probability distributions to describe the correlation and error of the data so that the uncertainty may depend on the results obtained. The estimated parameters Is used to describe the B-spline coefficients and layer velocities of the smoothed interface. Ray tracing is performed using the continuation technique between the source and the receiver. By solving the linear equations derived from the Fermat’s principle,