EGU25-12545, updated on 15 Mar 2025
https://doi.org/10.5194/egusphere-egu25-12545
EGU General Assembly 2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Poster | Wednesday, 30 Apr, 10:45–12:30 (CEST), Display time Wednesday, 30 Apr, 08:30–12:30
 
Hall X1, X1.101
SPOTGINS: A New Global GNSS Daily iPPP Solution Derived Using GINS software 
Jean-Paul Boy1, Florent Fériol2, Médéric Gravelle3, Gaël Janex4, Sylvain Loyer5, Samuel Nahmani6,7, Joëlle Nicolas8, Arnaud Pollet6,7, Pierre Sakic7, Alvaro Santamaría-Gómez2, and Aubin-Blériot Tsapong-Tsague4
Jean-Paul Boy et al.
  • 1University of Strasbourg, EOST, ITES (UMR7063), Strasbourg, France.
  • 2Géosciences Environnement Toulouse, Université de Toulouse, CNES, CNRS, IRD, UPS, Toulouse, France.
  • 3LIENSs, CNRS–La Rochelle University, La Rochelle, France .
  • 4Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, IRD, Univ. Gustave Eiffel, ISTerre, Grenoble, France.
  • 5CLS, Collecte Localisation Satellites, Ramonville Saint-Agne, France.
  • 6Université Paris Cité, Institut de physique du globe de Paris, CNRS, IGN, Paris, France.
  • 7Université Gustave Eiffel, ENSG, IGN, Marne-la-Vallée, France.
  • 8Laboratoire Géomatique et Foncier (GeF), UR 4630, Conservatoire national des arts et métiers (Cnam), Le Mans, France.

The growing interest of the GNSS community in computing GNSS series using the iPPP (Precise Point Positioning with integer ambiguity resolution) mode with the GINS software and the products of the CNES/CLS analysis center (GRG products) culminated in 2022 with the SPOTGINS project. This initiative enables several research laboratories to cooperate in processing a global network of stations, benefiting from the expertise of the IGS analysis center and the advanced quality of the GRG products.

This standardization and collaboration require a unified computational strategy, involving the same version of the GINS software, identical configurations (products, corrections, models, constellations), and consistent metadata. Currently, daily station positions are computed using GPS and Galileo constellations, using the “G20” orbits and clocks from the IGS CNES-CLS based on ITRF2020, FES2014b ocean tidal loading and VMF1 mapping functions.

SPOTGINS started in 2022 with the collaboration between the OMP in Toulouse, the EOST in Strasbourg and the LIENSs in La Rochelle, whose massive calculations with GINS were already being done for several years. In 2023 and 2024, other groups expressed interest in joining SPOTGINS: the GeF/Cnam in Le Mans, the IPGP/IGN in Paris and the OSUG/ISTerre in Grenoble. Each member pursues different scientific objectives, but all contribute  collectively to the dissemination of PPP series for the community through the Geodesy Plotter of the FormaTerre data and service hub.

How to cite: Boy, J.-P., Fériol, F., Gravelle, M., Janex, G., Loyer, S., Nahmani, S., Nicolas, J., Pollet, A., Sakic, P., Santamaría-Gómez, A., and Tsapong-Tsague, A.-B.: SPOTGINS: A New Global GNSS Daily iPPP Solution Derived Using GINS software , EGU General Assembly 2025, Vienna, Austria, 27 Apr–2 May 2025, EGU25-12545, https://doi.org/10.5194/egusphere-egu25-12545, 2025.