%0 Journal Article
%A Tegedor, Javier
%A Ørpen, Ole
%A Melgard, T.
%A Lapucha, Dariusz
%A Visser, H.
%T G4 Multi-constellation Precise Point Positioning Service for High Accuracy Offshore Navigation
%J TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation
%V 11
%N 3
%P 425-429
%D 2017
%U ./Article_G4_Multi-constellation_Precise_Tegedor,43,742.html
%X 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.
%@ 2083-6473
%R 10.12716/1001.11.03.05