规则格网覆盖的非规则布点数字地形模型

本文把规则格网的原理用于数据点非规则分布的数字地形模型(下称数模),从而提出了一种规则格网覆盖的非规则布点数模。这种数模综合了规则布点和非规则布点的优点,能比较真实地反映地形特征,内插精度高,使用方便,计算速度快。为了验证结论,做了几个算例,结果令人满意。

Irregular Grid Digital Terrain Model Neted by Regular Net

Applying the principle of regular grid to irregular grid digital terrain model (DTM), a new kind of DTM, i. e., irregular grid DTM neted by regular net, is presented. It possesses the advantages of both square grid DTM and irregular grid DTM, such as capable of truly reflecting the terrain feature, conven- ient to use, and having higher accuracy of point interpolation and higher calculation speed. Several examples are worked out with satisfactory results.