2 m格网数字表面模型数学精度问题研究

Research on Mathematical Accuracy of 2 m Regular Grid Digital Surface Model

从2 m规则格网数字表面模型的数学精度方面,分析了房屋边缘格网误差产生的原因,对检测点落入格网的高程误差分布进行了统计,提出了在数字表面模型房屋区域检验中加入平面精度,为今后的数字表面模型(DSM)质检提供借鉴。

This article analyzes the mathematical accuracy of the 2-meter regular grid digital surface model and the reasons for the generation of grid errors at the edges of buildings.The distribution of elevation errors of inspection points falling into the grid is statistically analyzed,and it is proposed to add planimetric accuracy to the inspection of building areas in the digital surface model.This provides reference for future quality inspection of digital surface models(DSM).