【摘要】 反演问题是根据实际测量的地层电磁场数据定性或者定量解释出地球内部的结构的过程。反演与正演是相互对应的,反演模型不仅能检测正演模型的准确性和可靠性,也能为地质解释提供依据,而反演也是瞬变电磁检测的难点与重点之一。本文详细介绍了瞬变电磁检测的反演原理,采用阻尼最小二乘法优化逼近正演结果的算法进行瞬变电磁反演的计算,并通过软件对实际地层数据进行反演,得到不同电阻率初值的地层反演结果。反演结果表明该方法切实可行,误差较小。更多还原

【Abstract】 Inversion is process of explanating internal structure of the Earth using actual measurement data of strata electromagnetics in a quantitative or qualitative manner.Inversion and forward are mutual correspond.Inversion model not only can detect the veracity and reliability of forward model,but also can provide the basis for geologic interpretation,Inversion is one of the focal point and difficult point in transient electromagnetic detection.The basic principle of inversion of transient electromagnetic detection is described in detail.Applying the damped least square method approaching Mthe forward result realizes the inversion of transient electromagnetic.And then the inversion for actual stratum data is done by using software; the inversion result of Layers with different resistivity initial value can be obtained.Inversion results show that the method is feasible,and the experimental value has a little error.更多还原