Análise comparativa de precisão de receptores GNSS para coletas de dados em levantamento planimétricos

Abstract

The standards for the georeferencing of rural properties demand that topographic surveys present high accuracy and reliability in their results, however, surveys are often carried out using inappropriate equipment, causing positioning and sizing errors in the perimeter and areas. The main purpose of this work is to compare the results obtained with different navigation and geodetic receivers. The following equipment was used in the research: Trimble R4 L1/L2+RTK, STONEX model 850+ and Garmin 76 CSx. 15 vertex points were collected from the Rural Engineering area, located at the Chã de Jardim Experimental Station belonging to the CCA Agricultural Sciences Center of the Federal University of Paraíba-UFPB. From the information collected with the different equipment, planimetric maps were generated, using a Geographic Information System – GIS. The results reveal discrepancies in the mapping carried out, since the information collected by a Garmin 76 CSx GPS receiver showed a variation of 2.014% in the area found, in comparison to geodetic receivers, which proved to be reliable for applications in precision agriculture, demonstrating their high accuracy and reliability.