仅在离散点处对观察值进行内推,是一个病态问题,因为这样会产生无穷解。为减少非单值性,往往引入有关采样函数的先验信息。目前,在矿产勘探中采用的内推方法只引入了插值函数的连续性和光滑度约束条件。在进行位场异常插值时,采样函数为谐振函数的约束可由等效层法(ELM)引入。通过把ELM法和极小曲率法应用于合成磁力数据模拟中,对比了 It is a pathological problem to push the observations only at discrete points, since this results in an infinite solution. To reduce non-singularity, prior information about sampling functions is often introduced. At present, the interpolation method used in mineral exploration only introduces the continuity and smoothness constraints of the interpolation function. Constraints of the sampling function as a resonance function can be introduced by the equivalent layer method (ELM) when performing anomalous field interpolation. The ELM method and the min curvature method are applied to the simulation of synthetic magnetic data and compared