论文部分内容阅读
描述了一种在层状介质中,从一束源激发产生反射记录上获取速度、密度的反演方法。通过把测点的所有波分解为两类,一类是第 n 层反射所得的波,另一类是前 n-1层反射所得的波。在假设已知前 n 层介质的情况下,把反演第 n+1层的问题化为一个线性回归。一些数值例子表明该反演方法较好地恢复了产生标准资料的那些参数。因为是线性回归方法,所以计算量小且精度较高。本文所给搜索波方法也是一个适合于计算机实现的较好的正演方法。
An inversion method of velocity and density acquisition on a reflective record in a layered medium is described. By decomposing all the waves at the measuring point into two types, one is the wave reflected by the n-th layer and the other is the wave reflected by the front n-1 layer. Assuming the first n layers of media are known, the problem of inverting the n + 1 layer is transformed into a linear regression. Some numerical examples show that the inversion method has better recovery of those parameters that produce standard data. Because it is a linear regression method, the calculation is small and the accuracy is high. The search wave method given in this paper is also a good forward method suitable for computer implementation.