2026-04-13T05:42:36Zhttps://recercat.cat/oai/request
oai:recercat.cat:2117/1059662025-07-17T05:33:09Zcom_2072_1033col_2072_452950
RECERCAT author Tossaint, Michel Mathias Maria author Samson, Jaron author Toran, Felix author Ventura Traveset, Javier author Sanz Subirana, Jaume author Hernández Pajares, Manuel author Juan Zornoza, José Miguel 2016 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 ReviewedPostprint (published version) http://creativecommons.org/licenses/by-nc-nd/3.0/es/ Restricted access - publisher's policy Attribution-NonCommercial-NoDerivs 3.0 Spain 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 The Stanford-ESA integrity diagram: focusing on SBAS integrity Conference lecture