Avaliação da altimetria do MDE COP-30 no Centro-Oeste do Brasil

This study analyzes the Brazilian Cartographic Accuracy Standard for Digital Cartographic Products (PEC-PCD) of the digital elevation model (DEM) from Copernicus DEM program, denominated COP-30, with the ellipsoidal altitudes provided by 317 reference stations of the Brazilian Geodetic System located in federative units of Goiás and Distrito Federal (Brazil). The PEC-PCD defines error tolerances according to eight different scales (from 1:1000 to 1:250,000) and four quality classes (ranging from A to D). Considering class A, the DEM COP-30 meets the 1:50,000 scale and lower scales, while for class B, the DEM COP-30 meets the 1:25,000 scale and lower scales. DEM COP-30 presented lower values of root mean square error (RMSE=1.98 m), indicating that it presents higher accuracy compared to other global free DEM.