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Development and evaluation of a stocastic model for multi-gnss point positioning: GPS, GLONASS, Galileo and BeiDou

Grant number: 19/26669-0
Support Opportunities:Scholarships in Brazil - Scientific Initiation
Effective date (Start): August 01, 2020
Effective date (End): January 31, 2023
Field of knowledge:Physical Sciences and Mathematics - Geosciences - Geodesy
Principal Investigator:Daniele Barroca Marra Alves
Grantee:João Pedro Voltare Zaupa
Host Institution: Faculdade de Ciências e Tecnologia (FCT). Universidade Estadual Paulista (UNESP). Campus de Presidente Prudente. Presidente Prudente , SP, Brazil


Global Navigation Satellite Systems (GNSS) have been increasingly employed in activities that require position estimates. In addition to the North American GPS (Global Positioning System), GLONASS, developed by the former Soviet Union and which is in full constellation, the European Galileo and the Chinese BDS also orbit the Earth, both being implemented, achieving full constellation by 2020. These four systems should work together at the user level, improving positioning availability and accuracy. The main objective of this research is to develop a stochastic model suitable for multi-GNSS Point Positioning (GPS, GLONASS, Galileo and BeiDou), as well as to evaluate the accuracy of positioning considering the different constellations individually and combined, considering data from stations in different regions of the country. The evaluation will be carried out mainly in terms of positioning accuracy and analysis of the satellites residuals errors.

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