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2022 Journal Impact Factor - 0.6
2022 CiteScore - 1.7




ISSN 2083-6473
ISSN 2083-6481 (electronic version)




Associate Editor
Prof. Tomasz Neumann

Published by
TransNav, Faculty of Navigation
Gdynia Maritime University
3, John Paul II Avenue
81-345 Gdynia, POLAND
G4 Multi-constellation Precise Point Positioning Service for High Accuracy Offshore Navigation
1 Fugro Seastar, Oslo, Norway
2 Fugro Chance, Louisiana, Lafayette, USA
3 Fugro Intersite, Leidschendam, Netherlands
ABSTRACT: Fugro is operating a global GNSS infrastructure for the delivery of high-accuracy multi-constellation Precise Point Positioning (PPP) service, named G4. Precise orbit and clock for all global satellite navigation systems are estimated in real-time and broadcast to the users using geostationary satellites. End-users with a G4-enabled receiver are able to obtain sub-decimeter positioning accuracy in real-time. The system has been tailored for offshore applications where a nearby GNSS station is not always readily available. G4 offers seamless integration of GPS, GLONASS, Galileo and BeiDou in the navigation solution, therefore allowing the user to obtain a reliable and accurate position even in challenging environments, especially in presence of interference, scintillation or partial sky visibility. In addition, carrier-phase integer-ambiguity resolution (IAR) is supported, for those users requiring the highest possible navigation accuracy. This paper presents the G4 system architecture and current performance. The benefits of multi-constellation Precise Point Positioning (PPP) are shown in terms of increased availability, robustness and accuracy.
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Citation note:
Tegedor J., Ørpen O., Melgard T., Łapucha D., Visser H.: G4 Multi-constellation Precise Point Positioning Service for High Accuracy Offshore Navigation. TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation, Vol. 11, No. 3, doi:10.12716/1001.11.03.05, pp. 425-429, 2017

Other publications of authors:

D. Łapucha, K. de Jong, X. Liu, T. Melgard, O. Oerpen, E. Vigen

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