AEROPHOTOGRAMMETRIC SURVEY OF THE GOLFINHO MURUNDUS FIELD (FAL/UNB-DF), USING REMOTELY PILOTED AIRCRAFT

Abstract

Murundus fields, wet landscapes of the Cerrado biome that have been degraded, are characterized by a set of rounded hills with varying diameters and heights. They are considered APP in DF since March 17, 2020 (Law n° 6.520). Due to the small area they occupy in the geographic space and the decharacterization of their original vegetation they become barely perceptible in mapping or orbital sensor images. Recognizing the need to map them to preserve them, it was decided to use Remotely Piloted Aircraft (RPA), with sensors attached. The Golfinho Murundus Field (FAL, UnB) was selected as study area for its already recognized characteristics, being described in previous studies (BAPTISTA, 2008). The field aerial survey planning relied on the use of Google Earth Pro and DroneDeploy software. Four flights were planned with frontal and lateral overlaps of 70%, with the objective of obtaining more details of the terrain. Agisoft Metashape Professional software was used to process the images obtained. The post-processing was done through the GPPK software, supplied by Guandalini Positioning. It was found that the APP in question is being affected by undue works and changes in the composition of fauna and flora, according to the district legislation in force. The methodology applied, given the objective, proved to be effective and well consolidated. It was possible to identify hillside individuals, as well as the relief features forming a drainage divide with a high level of detail.