煤田地质与勘探2017，Vol.45Issue(5)：161-166,172,7.DOI:10.3969/j.issn.1001-1986.2017.05.028
回线源瞬变电磁法一维反演算法
One-dimensional inversion for loop source transient electromagnetic method
摘要
Abstract
Because the damping least square method is only suitable for a simple model,when the media has multiple layers,inversion is effected by multiple solutions,sometimes even no convergence occurs,and the inversion is very time-consuming.For this purpose,regularization idea is used to introduce the model-constrained inversion,in the cause of iteration,the adaptive regular factor of the regularized inversion algorithm is calculated adaptively based on the relation of the data objective function and the model objective function;it can result in a stable convergence in the iteration course of the inversion.In this paper,the inversion used quasi-Newton method to update Jacobian matrix,it reduced greatly the time required for the inversion,and the typical spreadsheet three and multi-theoretical model as an example to inversion is proved less demanding on the initial model of the adaptive quasi-Newton regularized inversion algorithm.The inversion result also show that the adaptive regularized inversion is steady and reliable and has good fitting effect,fast convergence and strong adaptability.关键词
瞬变电磁/阻尼最小二乘反演/自适应正则化反演/雅可比矩阵Key words
transient electromagnetic/damping least squares inversion/adaptive regularized inversion/Jacobian matrix分类
天文与地球科学引用本文复制引用
李刚,潘和平,王智,吴爱平,方思南..回线源瞬变电磁法一维反演算法[J].煤田地质与勘探,2017,45(5):161-166,172,7.基金项目
国家自然科学基金项目(51541408) （51541408）
长江青年人才基金项目(2015cqn36)National Natural Science Foundation of China(51541408) （2015cqn36）
Program for Changjiang Young Talents(2015cqn36) （2015cqn36）
