The relation between DEM terrain representation error (E_t) and the variation of DEM resolution (R) and mean profile curvature (V) is studied.

• 对数字高程模型(DEM)的地形描述误差(Et)与空间分辨率(R)和平均剖面曲率(V)的关系进行研究；得到地形描述误差的均方差值与R、V的函数关系公式:RMSEt=(0.；0061V+0