Utilização de modelo digital de terreno gerado através de drone para geração de volumes de água em açude rural seco.

Abstract

The use of UAVs in precision agriculture has grown in recent years, especially in topographic work. With digital terrain models generated by VANTS images, volume calculations can be performed, since the efficiency of these works must be evaluated. Thus, the present study aimed to perform a comparative analysis between the UAV with the Total Station and the GNSS RTK system, in the generation of the Quota x Area x Volume table of a dry rural dam, using the Digital Terrain Model - MDT. The research was carried out at the experimental station farm of the National Institute of Semi - arid - INSA, in the city of Campina Grande - PB. Data collection was performed by obtaining images and georeferencing of support points for processing in Agisoft Photoscan software. The MDTs as well as the orthomosaics were generated, which from them were measured the reservoir volumes. Different methodologies for the work were evaluated, with collections of 100 and 120 meters altitude. The generated product was effective in the final result, where it presented a slight divergence from Total Station and GNSS System. Therefore, it was observed that the use of UAVs stands out in relation to the other equipment, because besides reducing the time and costs for the final product acquisition, it is possible not only to calculate the volume of pre-existing reservoirs, but also to use MDT for planning new reservoirs.