阻尼型高斯-牛顿法及其在高频电磁波测井反演中的应用  

DAMPING GAUSS-NEWTON METHOD AND ITS APPLICATION TO THE INVERSION OF HIGH FREQUENCY ELECTROMAGNETIC WAVE LOGGING

作　　者：张美玲[1] 邢光龙[1] 刘曼芬[1] 杨善德[1] 

机构地区：[1]吉林大学物理系,吉林长春130023

出　　处：《计算物理》2002年第2期155-158,共4页Chinese Journal of Computational Physics

基　　金：国家自然科学基金资助 ;编号为 497742 41

摘　　要：提出一种改进的阻尼型高斯 牛顿优化算法 ,通过引入阻尼矩阵 ,对反演参数依其相对修改量不同而给以不同的阻尼作用 。Gauss-Newton optimization technique is a method with less computation time and rapid convergence speed, but it requires better initial conditions. It is a tickler to lose its role or to bring about local-extreme-value problems. Under the circumstances, an improved damping form of Gauss-Newton optimization technique is presented to avoid these problems. By using the diagonal damping matrix, the damping role will be changed according to the relative modified amounts of the inversion parameters. The good effect is obtained when this approach is used in the inversion problem of the high frequency electromagnetic wave logging.

关 键 词：高斯-牛顿法 阻尼矩阵 高频电磁波测井 反演 优化算法 反演参数 

分 类 号：P631.819[天文地球—地质矿产勘探] O242.23[天文地球—地质学]