2026-04-14T07:46:49Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/1059662025-07-17T05:33:09Zcom_2072_1033col_2072_452950

The Stanford-ESA integrity diagram: focusing on SBAS integrity Tossaint, Michel Mathias Maria Samson, Jaron Toran, Felix Ventura Traveset, Javier Sanz Subirana, Jaume Hernández Pajares, Manuel Juan Zornoza, José Miguel Universitat Politècnica de Catalunya. Departament de Matemàtiques Universitat Politècnica de Catalunya. Departament de Física Universitat Politècnica de Catalunya. gAGE - Grup d'Astronomia i Geomàtica Universitat Politècnica de Catalunya. IonSAT - Grup de determinació Ionosfèrica i navegació per SAtèl·lit i sistemes Terrestres Àrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi matemàtica::Mesura i integració Geometric function theory Funcions geomètriques, Teoria de les Classificació AMS::32 Several complex variables and analytic spaces::32F Geometric convexity In this article, a new concept for SBAS integrity validation is presented. The proposed concept is a modification of the well known Stanford diagram [2], where a 2D histogram shows the relationship of position errors against protection levels for a set of measurements using an all in view satellite selection. The new method consists on two diagrams: the Worse-Safety Index diagram and the “All-Geometries” diagram, known here as the Stanford-ESA and the All-Stanford-ESA, respectively. The first consist on taking, at each sample time and given location, the worst possible satellite geometrical combination (out of all possible combinations) from a SBAS integrity margin viewpoint. In the second, all possible geometries are displayed and, in case of MIs, the geometries associated to each epoch are leveled with different symbols and colors. It allows, to easily identify the different clusters and to assess the time correlation of the events. Real measurement results are presented here showing that the EGNOS integrity margins remain safe under this very exigent criterion, a certainly very positive result. It is suggested here to use the Stanford-ESA Integrity concept, for routine performance monitoring and to support and complement the safety case of the EGNOS system with real experimental data. Peer Reviewed Postprint (published version) 2016 Conference lecture Tossaint, M., Samson, J., Toran, F., Ventura, J., Sanz, J., Hernandez, M., Juan, J. The Stanford-ESA integrity diagram: focusing on SBAS integrity. A: International Technical Meeting of The Satellite Division of the Institute of Navigation. "19th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2006): Fort Worth, TX, USA: september 26 - 29, 2006: proceedings". Fort Worth, TX: ION Publications (The Institute of navigation), 2016, p. 894-905. https://hdl.handle.net/2117/105966 eng https://www.ion.org/publications/pdf.cfm?articleID=6963 http://creativecommons.org/licenses/by-nc-nd/3.0/es/ Restricted access - publisher's policy Attribution-NonCommercial-NoDerivs 3.0 Spain 12 p. application/pdf ION Publications (The Institute of navigation)