Análise de correlação entre latitude e erro posicional de dados obtidos por receptores GNSS geodésicos

Abstract

The Brazilian continuous monitoring network (RBMC) is the most important reference network in the country, being a set of GNSS receivers collecting and making available daily or real time data. Knowing the great extent of the Brazilian territory, a study was made to analyze the positional quality taking the position of latitude as a variable. The stations (APS1-96264, MABB-96561, PISR-96521, BABJ-93331, MGTO-96329, CHPI-93920, SCCH-94026 and RSPE-96172) were used, being chosen due to a better distribution in the national territory with data referring to the dates 15/11/2019, 15/02/2020, 15/05/2020 and 15/08/2020, due to the wide temporal variation and data with more than one month to perform PPP processing with more reliable corrections. The data obtained from the RBMC were processed via PPP-IBGE, and compared with its official reports. The results found suggest that there is no correlation between the quality of the coordinates and their latitude, as a suggestion for future work, new analyzes should be carried out for shorter observation times.