谱分析方法正演重磁场时,谱的离散化和截断产生异常的褶迭和皱波效应给计算结果带来了误差。本文提出消除办法,即先对谱进行褶迭和褶积,再作富里叶变换,得到的空间域异常就不再产生褶迭和皱波效应了。本文还对谱的解析式中某些奇异点的处理提出解决措施。 When the spectrum analysis method forwards the heavy magnetic field, the discrepancy of the spectrum and the truncation result in the folds and the ripple effect, which bring errors to the calculation results. In this paper, the elimination method is proposed, that is, folds and convolutes the spectrum first, and then makes the Fourier transform again. The spatial domain anomaly obtained will no longer produce folds and corrugation effects. In this paper, some solutions to the singularities in the analytic formula of the spectrum are proposed.