Avaliação da precisão dos equipamentos GNSS, verificando a discrepância das coordenadas, utilizando a carta controle

The GNSS receivers have the role to take coordinates on terrestrial surface for many finalities, there have many types of equipment and software, being necessary to evaluate which of these are more accuracy. It was realized at Laboratory Farm of Centro Universitario de Formiga (UNIFOR) a survey with the following GNSS equipment, being them Garmin, etrex 10, Trimble PROXR, Hi target V30, static and RTK, Mavic PRO of Dji (UAV), and the software Google Earth PRO. The goal was to evaluate the accuracy of each equipment, watching if there are difference significant, in order to elect the most accurate and satisfactory results.  It was realized the test T for see if it has difference minimums significant. And through of Control chart it was evaluated which equipment has more variability. The Garmin and the coordinates collected by software Google Earth PRO had the biggest variability, differ than others in altitude, considering lowers accuracy. The V30 RTK the biggest linearity of data. The V30 static mode showed medium to low variability. The PROXR had medium discrepancy being an easy handling tool. The Mavic PRO had a medium to low variability being considered a good tool to the topography and engineer.