GNSS point positioning: implementation and evaluation of new models, systems and signals

• Grant number: 16/24861-3
• Support type: Scholarships in Brazil - Master
• Effective date (Start): April 01, 2017
• Effective date (End): February 28, 2019
• Field of knowledge: Physical Sciences and Mathematics - Geosciences - Geodesy
• Cooperation agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
• Principal researcher: Daniele Barroca Marra Alves
• Grantee: Paulo de Tarso Setti Júnior
• Home Institution: Faculdade de Ciências e Tecnologia (FCT). Universidade Estadual Paulista (UNESP). Campus de Presidente Prudente. Presidente Prudente , SP, Brazil
• Associated scholarship(s): 17/22223-2 - Combined GPS and Galileo point positioning: an analysis of Klobuchar and NeQuick ionospheric models performances at different latitudes, BE.EP.MS

Abstract

GNSS (Global Navigation Satellite System) has been increasingly used for a wide range of purposes. In addition to the widespread North American GPS (Global Positioning System), three similar systems are orbiting the Earth: GLONASS, developed by the former Soviet Union and which has now a full constellation, and the European Galileo and the Chinese BeiDou, both under implementation phase and with plans for a full constellation by 2020. Through the navigation messages, GPS and Galileo send parameters for correction of the ionosphere through the Klobuchar and NeQuick models, respectively. The tendency is that in the future these four systems work together, with correction parameters being shared among them, improving the availability and accuracy of the positioning. With this research we aim study the combined use of these systems in Point Positioning and analyze the applicability of the Klobuchar and NeQuick models in all four systems. With this project, it will be possible to analyze data quality and accuracy in positioning using precise ephemeris and atmospheric corrections, especially with respect to the systems under implementation phase, which have not been studied in Brazil. (AU)

Scientific publications

(4)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

SILVA, C. M.; SETTI JUNIOR, P. T.; ALVES, D. B. M.; SOUZA, E. M. GNSS ambiguity resolution with ratio and fixed failure ratio tests for long baseline network RTK under ionospheric activity. JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS, v. 202, JUN 2020. Web of Science Citations: 0.

SILVA, C. M.; ALVES, D. B. M.; SOUZA, E. M.; SETTI JUNIOR, P. T. Ionospheric scintillation impact on ambiguity resolution using ADOP in closed form. Advances in Space Research, v. 64, n. 4, p. 921-932, AUG 15 2019. Web of Science Citations: 0.

PAULO DE TARSO SETTI JÚNIOR; DANIELE BARROCA MARRA ALVES; CRISLAINE MENEZES DA SILVA. KLOBUCHAR AND NEQUICK G IONOSPHERIC MODELS COMPARISON FOR MULTI-GNSS SINGLE-FREQUENCY CODE POINT POSITIONING IN THE BRAZILIAN REGION. Bol. Ciênc. Geod., v. 25, n. 3, p. -, 2019.

SETTI JUNIOR, PAULO DE TARSO; MARRA ALVES, DANIELE BARROCA; DA SILVA, CRISLAINE MENEZES. KLOBUCHAR AND NEQUICK G IONOSPHERIC MODELS COMPARISON FOR MULTI-GNSS SINGLE-FREQUENCY CODE POINT POSITIONING IN THE BRAZILIAN REGION. Bol. Ciênc. Geod., v. 25, n. 3 2019. Web of Science Citations: 0.

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

JÚNIOR, Paulo de Tarso Setti. Posicionamento por Ponto multi-GNSS : análise dos sistemas, sinais e modelos ionosféricos. 2019. 106 f. Master's Dissertation - Universidade Estadual Paulista "Júlio de Mesquita Filho" Faculdade de Ciências e Tecnologia..