等效源模型反演方法的效果

等效源方法不仅可用于位场转换,而且也能用于位场反演。在可能存在矿体的区域,我们选择一组等效源和这些等效源的初始参量,然后与通常的最优化选择法一样用Marquardt方法进行迭代求解。等效源反演与最优化选择法的差别,是在等效源法反演中迭代参数仅仅是密度或磁化强度,等效源的位置、形状和大小是固定不变的。本文叙述了等效源反演方法和其有效性。

INVERSION BY EQUIVALENT SOURCE METHOD

The equivalent source method can be used not only for transformarion but: also for inversion of potential field. A group of equivalent sources over the region where the ore bodies might be present and the initial parameters of these sources were choosen.Then Marquardt's method was used for the iteration as general curve-matching optimization method. The difference between those two methods is that the parameters in equivalent source inversion are only density or magnetization and the position, form and size of the sources are fixed. In this paper the method and its efficiency of equivalent source inversion were illustrated.