基于一般最小二乘算法的随机插值技术，用方差图作为权重函数；这一技术可被应用于任何需要用点数据估计其在地表上分布的现象。-Random interpolation technology based on the general least squares algorithm, using variogram as the weighting function　This technology can be applied to any need to use some data to estimate the distribution of phenomena on the surface of the earth.