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ESA UGI (Unified-GNSS-Ionosphere): An open-source software to compute precise ionosphere estimates / Raül Orús-Pérez in Advances in space research, vol 67 n° 1 (January 2021)  

Public [article]  inAdvances in space research > vol 67 n° 1 (January 2021) . - pp 56 - 65 Titre : ESA UGI (Unified-GNSS-Ionosphere): An open-source software to compute precise ionosphere estimates Type de document : Article/Communication Auteurs : Raül Orús-Pérez, Auteur ; Bruno Nava, Auteur ; Juan M Parro-Jimenez, Auteur ; Anton Kashcheyev, Auteur Année de publication : 2021 Article en page(s) : pp 56 - 65 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale [Termes IGN] code source libre [Termes IGN] logiciel libre [Termes IGN] modèle ionosphérique [Termes IGN] propagation ionosphérique Résumé : (auteur) Ionospheric estimation is becoming more and more important for the new multifrequency positioning algorithms, since they can help to improve greatly the convergence time for acquiring a good positioning error. In this paper, an open source tool to estimate precise ionospheric estimates is presented, namely ESA UGI (Unified-GNSS-Ionosphere). The presentation is done jointly with a methodology to test ionospheric model using a modified NeQuick to generate synthetic data. The results with different option of the ESA UGI shows that it has a good performance below 1 TECU (Total Electron Content Units) in vTEC (vertical Total Electron Content) RMS (Root Mean Squared) for European networks, around 2 TECU in a well-covered African region and between 1 and 6 TECU globally with this synthetic data. It shows as well the capability of changing between different ionosphere models (voxel, multilayer and spherical harmonics) and configuration options. Finally, a test with uncombined PPP actual data is presented showing that instantaneous convergence below 30 cm in 3D RMS position error are achievable in a well sounded area in Europe. Numéro de notice : A2021-485 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : 10.1016/j.asr.2020.09.011 Date de publication en ligne : 19/09/2020 En ligne : https://doi.org/10.1016/j.asr.2020.09.011 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=97445 [article]