Dokładność numerycznego modelu terenu w aspekcie badań eksperymentalnych

In the paper review of the methods of numerical approximation of the land surface are presented.The inyestigations prove that the methods of approximation which involve correlation between the terrain points having essential significance. Are presented also problem of accuracy of approximation of the land sudace based on DTM end method of estimation of accuracy. It follows from the investigations that the proposed method of estimation of the accuracy of approximation of the land surface, based on the grid of points, is simple and qick. The use of DTM methods allows fast incorporation of the data into the spatial information systems (LIS-GIS) and their wide application for the spatial investigations and engineering.