向下延拓,主要针对重磁数据处理方面的,可有效的增强下延的稳定性.-Downward continuation, mainly for gravity and magnetic data processing, can effectively enhance the stability of the next extension.

本程序集对地球物理场做多种处理 如：2阶及4阶导数，位场转换，不规则密度体重力场计算，竖直圆柱体重磁场计算，用泰勒多项式及最小平方2乘的剩余异常计算，（主要适用于地磁场以及重力场的转换）-FUNCTION : THIS ROUTINE IS USED TO CALCULATE GRAVITY FOR VARIABLE DENSITY OF 2D BIVARIATE TRAPEZOID BODY Function : This program calculate derivatio

Potential field downward continuation