In-flight Measurements of Radiation Environment Observed by Eutelsat 7C (Electric Orbit Raising Satellite)

Mesures de l'environnement radiatif spatial observé par le satellite E7C

Pablo Caron (1) , Sébastien Bourdarie (1) , Didier Falguere (1) , Didier Lazaro (1) , Philippe Bourdoux (2) , Vijay Thakur (3) , Pierre Timmerman (3) , Ricardo Hernandez (3) , Grégory Schneider (3) , Catherine Keys (4) , Michel Baylocq (4) , Nicolas Balcon (5) , Denis Standarovski (5) , Julien Mekki (5) , Robert Ecoffet (5)

1 DPHY, ONERA, Université de Toulouse [Toulouse]
2 EREMS - EREMS
3 EutelSAT
4 Maxar Technologies
5 CNES - Centre National d'Études Spatiales [Toulouse]

Measurements of particle fluxes (protons and electrons) obtained with the ICARE_NG monitor on the Eutelsat 7C orbit (Electric Orbit Raising to geostationary orbit) are presented. Several comparisons are proposed with other instruments (MagEIS, RPS and MPSH) and radiation models (AEP8, IRENE and GREEN). Significant discrepancies have been found, especially with AEP8 model. The measurements when the satellite is in its operational orbit (GEO) have also been compared with the IGE model and an excellent agreement is observed. For calculating fluxes from ICARE_NG outputs, two methods have been developed and their results are compared in order to consolidate our interpretations.

Mots clés: Space environment; particle fluxes; electron; proton; EOR; GEO

Mots clés: EOR; GEO; Environnement spatial; Flux de particules

Domaines: Physique de l'espace [physics.space-ph]; Instrumentation et méthodes pour l'astrophysique [astro-ph.IM]

Pablo Caron, Sébastien Bourdarie, Didier Falguere, Didier Lazaro, Philippe Bourdoux, et al.. In-flight Measurements of Radiation Environment Observed by Eutelsat 7C (Electric Orbit Raising Satellite). IEEE Transactions on Nuclear Science, 2021, 69 (7), pp.1527-1532. ⟨10.1109/TNS.2022.3158470⟩. ⟨hal-03611457⟩