Avaliação da acurácia em levantamento aerofotogramétrico com uso de VANT: Estudo de caso na Rodovia Federal BR-230

Abstract

Traditional surveys from aerophotogrammetry show high cost and time needed to the data collecting and processing. Nowadays, other technologies have been developed and applied to address these barriers. Among the technologies used in topographic survey of large areas, drones appear as a practical and low-cost alternative compared to conventional topographic surveys, such as station or remote satellite receivers (GNSS). Therefore, it is relevant to evaluate the positional quality of an aerial photogrammetric survey performed with these unmanned aircraft (UAV), since there are no normative mapping standards do not consider such surveys. In this context, this research sought to evaluate the accuracy of the orthomoosols obtained in aerial photogrammetric processing with drones on the BR-230 Highway between km 0 and km 27, using an analysis of the positioning of control points in soil. In all, 28 flights were performed in an area of 431 ha with 14 cm planimetric accuracy. The achieved results showed that this technology can be used in projects that require data accuracy and reliability, such as municipal letters used in urban management or cadastral purposed.