Acurácia horizontal do mapeamento de um trecho da área de concessão da UHE de Bariri, SP com imagens de alta resolução coletadas com RPAS

Photogrammetry from high resolution images acquired with RPAS are applied in several works like as agricultura, geology and engineering. The accuracy of horizontal position depends of the georefering of the MDT from ground control points (GCP), This manuscript presents the assessment the accuracy horizontal of the orthomosaic of the area near to Bariri hydropower. The orthomosaic generated with 306 images collected with UAV ECHAR 20 B. The Digital Elevation Model with GSD 6 cm was georefered with 15 GCP on Menci Software. We selected 23 points on orthomosaic and we compared with its coordinates of GNSS Leica GS -15. The RMS was computed and compared with Standart Cartography Precision to Digital Images Processing (SCP-DIP). We conclued that the orthomosaic belongs was 1:2,000 scale, class B. This horizontal accuracy indicates that mapping with sensor on board on UAV is feasible to attend requirements of the law about concession áreas for hydropower.