Study of the positional quality obtained by the method Precise Point Positioning, PPP, for use in georeferencing of rural properties

Study of the positional quality obtained by the method Precise Point Positioning, PPP, for use in georeferencing of rural properties
Michel Balin de Brum1 , Adriane Brill Thum2

1. Unisinos, Av. Unisinos, 950-Esp. em Informações Espaciais Georreferenciadas michelbrum@ibest.com.br
2. Unisinos, Av. Unisinos, 950 adrianebt@unisinos.br

Abstract: Precise Point Positioning - PPP, which are used the precise ephemeris and clock corrections of satellite data with the carrier wave, so static or kinematic. Established itself as the choice of statistical test every Monday, from 28/02/2005 to 22/11/2010 totaling 296 days of raw GNSS data files of twenty four hours. The observation files tablets were sent individually to the IBGE-PPP to make the postprocessing. The PPP has been converted into geodetic coordinates in UTM coordinate plane. Comparisons made by subtraction of coordinates of the Brazilian Network for Continuous Monitoring -RBMC SMAR, coordinates Officers SIRGAS 2000, the date of survey coordinates and coordinates of two, four and 24 hours. The latter resulted in a comparison between the different screening times. The results are satisfactory as to the positional accuracy required by INCRA. Which remained throughout the six years studied. Observing small variations in the position of the coordinates, including shortening the time of screening, two hours. Therefore, the PPP technique proved a modern, safe and easy to use in providing precision geodetic surveys.

Keywords: GPS, PPP, Precise Point Positioning.

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