Proposta metodológica para correção de coordenadas geodésicas obtidas por posicionamento por ponto preciso - PPP para o estado da Bahia

Abstract

PPP can be applied in several geodetic activities, which has led to a significant increase in the number of users of this type of service, as this service has a number of advantages, such as the use of only one receiver, which does not require software. processing, just send the GNSS observation file in RINEX format to IBGE, the IBGE PPP service generates results, facilitating the service. The main objective of this project is to propose a methodology for correcting geodetic coordinates obtained by PPP for the state of Bahia, through the waste surface generated from the IDW interpolation with the deviations of the geodetic coordinates of RBMC stations contained in the state and regions border with other states. In this way, 05 RBMC stations in the state of BA were used, and 05 more stations around the state, selecting three different times of October 2022 for the acquisition of tracking data and processing the PPP with the IBGE. The deviation obtained between the monograph and PPP coordinates in latitudes and longitudes served as the basis for applying interpolation using the IDW method. Through the interpolations that were performed with all the points, it served to estimate the error made at each station by the interpolation. Therefore, the results obtained in the research were satisfactory, so it is assumed that the objective was achieved, since the errors found in the processing of RBMC data with the use of PPP present high precision values, being almost identical the error of the PPP and the IDW method.