Cobertura de estações RBMC no estado de São Paulo para transporte de coordenadas geodésicas apoiadas ao sistema geodésico brasileiro

Abstract

The transport study of geodetic coordinates is fundamental for the analysis of geographic data, being essential for cartography and topography. From this method it is possible to determine the positioning of an object or point in different systems of geodesic coordinates. Transporting geodetic coordinates helps improve the accuracy of mapping and geographic analysis, allowing users to obtain more accurate and efficient results. The present work aims to analyze the coverage area of RBMC stations in the state of São Paulo to obtain the geodetic coordinates of immediate support points for topographic, geodetic and cadastral surveys, as well as the respective expected accuracies according to the lengths of their baselines. The methodology was developed using the QGIS software, which allowed data to be manipulated. Shapefile files provided by IBGE, the state of São Paulo and the RBMC stations were used. Data were processed with the aid of vector analysis tools (buffer, intersection and dissolve). Thus, maps were prepared that represent the coverage area of the RBMC stations according to their baselines, the intersection of two or more stations of the 50 and 100 km baselines, in addition to the municipalities fully served by the stations with 50 baselines. and 100km. In this way, it was possible to achieve the objective of the work. The lack of stations in the state generated few areas of total coverage, making it necessary to install more stations to cover as many municipalities as possible. The results obtained show that the methodology is applicable for the same purpose and for similar analyzes in other regions of Brazil.