{"id":21450,"date":"2026-07-03T15:36:11","date_gmt":"2026-07-03T13:36:11","guid":{"rendered":"https:\/\/ngi.be\/?p=21450"},"modified":"2026-07-03T16:00:49","modified_gmt":"2026-07-03T14:00:49","slug":"lign-contribue-a-faconner-lavenir-des-systemes-de-reference-geodesiques-europeens-a-euref-2026","status":"publish","type":"post","link":"https:\/\/ngi.be\/lign-contribue-a-faconner-lavenir-des-systemes-de-reference-geodesiques-europeens-a-euref-2026","title":{"rendered":"L\u2019IGN contribue \u00e0 fa\u00e7onner l\u2019avenir des syst\u00e8mes de r\u00e9f\u00e9rence g\u00e9od\u00e9siques europ\u00e9ens \u00e0 EUREF 2026"},"content":{"rendered":"<h5>Du 23 au 25 juin, l\u2019Institut g\u00e9ographique national (IGN) a particip\u00e9 au symposium EUREF 2026, organis\u00e9 \u00e0 Paris par l\u2019IGN France. Ce rendez-vous annuel r\u00e9unit la communaut\u00e9 g\u00e9od\u00e9sique europ\u00e9enne charg\u00e9e de d\u00e9velopper et de maintenir les syst\u00e8mes de r\u00e9f\u00e9rence g\u00e9od\u00e9siques qui constituent le socle du positionnement, de la cartographie et de nombreuses applications scientifiques \u00e0 travers l\u2019Europe.<\/h5>\n<p><!--more--><br \/>\nL\u2019un des faits marquants de cette \u00e9dition concerne la gouvernance de la g\u00e9od\u00e9sie europ\u00e9enne. Jeffrey Verbeurgt, responsable du service G\u00e9od\u00e9sie de l\u2019IGN belge et Pr\u00e9sident de GRF Europe, la Communaut\u00e9 d&#8217;int\u00e9r\u00eat sur les cadres de r\u00e9f\u00e9rence g\u00e9od\u00e9siques de l&#8217;UN-GGIM : Europe, a \u00e9t\u00e9 invit\u00e9 \u00e0 si\u00e9ger en tant qu\u2019observateur permanent au sein du Governing Board d\u2019EUREF. Cette \u00e9volution renforce les liens entre les deux organisations et refl\u00e8te la compl\u00e9mentarit\u00e9 de leurs missions. Tandis qu\u2019EUREF constitue l\u2019autorit\u00e9 scientifique et technique de r\u00e9f\u00e9rence pour les syst\u00e8mes g\u00e9od\u00e9siques europ\u00e9ens, GRF Europe promeut l\u2019importance et assure le relais des besoins de cette communaut\u00e9 au niveau politique.<\/p>\n<p>Dans le m\u00eame esprit, Jeffrey Verbeurgt est intervenu dans le panel consacr\u00e9 aux collaborations et partenariats, au nom de GRF Europe. Les \u00e9changes ont port\u00e9 sur la mani\u00e8re dont les acteurs techniques et politiques peuvent se renforcer mutuellement et ainsi \u00e9viter la duplication des efforts.Parmi les sujets techniques majeurs abord\u00e9s lors de cette conf\u00e9rence figurait l\u2019avenir de l\u2019ETRS89 (European Terrestrial Reference System), le syst\u00e8me de r\u00e9f\u00e9rence g\u00e9od\u00e9sique europ\u00e9en et la base de presque tous les syst\u00e8mes de coordonn\u00e9es nationaux des pays europ\u00e9ens. Face \u00e0 l\u2019augmentation constante des exigences en mati\u00e8re de pr\u00e9cision, les participants ont examin\u00e9 les \u00e9volutions n\u00e9cessaires pour garantir la fiabilit\u00e9 et la p\u00e9rennit\u00e9 de ce r\u00e9f\u00e9rentiel. Ces discussions rev\u00eatent une importance particuli\u00e8re pour l\u2019IGN, l\u2019ETRS89 constituant la base du syst\u00e8me de coordonn\u00e9es utilis\u00e9 en Belgique.<\/p>\n<p>L\u2019IGN a \u00e9galement pr\u00e9sent\u00e9 l\u2019avancement de ses travaux sur deux fronts :<\/p>\n<ul>\n<li>D\u2019une part, le retraitement des observations belges GNSS qui alimente notamment les activit\u00e9s du groupe de travail EPN Densification, contribuant \u00e0 une meilleure mod\u00e9lisation de ph\u00e9nom\u00e8nes tels que les d\u00e9formations intraplaques \u00e0 l\u2019\u00e9chelle europ\u00e9enne.<\/li>\n<li>D\u2019autre part, l\u2019IGN poursuivra la r\u00e9analyse de ses donn\u00e9es de nivellement et de gravim\u00e9trie afin de contribuer \u00e0 l\u2019am\u00e9lioration de la r\u00e9alisation du syst\u00e8me europ\u00e9en de r\u00e9f\u00e9rence altim\u00e9trique. Ces travaux participent \u00e0 l\u2019objectif commun de disposer d\u2019un syst\u00e8me de hauteurs homog\u00e8ne, coh\u00e9rent et physiquement repr\u00e9sentatif \u00e0 l\u2019\u00e9chelle du continent.<\/li>\n<\/ul>\n<p>Au-del\u00e0 des sessions scientifiques, le symposium a \u00e9galement offert aux g\u00e9od\u00e9siens de Belgique, des Pays-Bas et du Luxembourg l\u2019occasion de se retrouver peu de temps apr\u00e8s la signature, le 8 juin \u00e0 Bruxelles, de l\u2019accord de coop\u00e9ration renforc\u00e9e pour le Benelux en mati\u00e8re de g\u00e9od\u00e9sie.<\/p>\n<p>\u00c0 travers sa participation active aux travaux d\u2019EUREF, l\u2019IGN confirme son engagement en faveur du d\u00e9veloppement des infrastructures g\u00e9od\u00e9siques europ\u00e9ennes et du renforcement des liens entre expertise scientifique, coop\u00e9ration internationale et gouvernance. Ces contributions sont essentielles pour garantir des syst\u00e8mes de r\u00e9f\u00e9rence fiables, indispensables \u00e0 de nombreux domaines tels que la cartographie, la navigation, la surveillance des territoires, la recherche scientifique ou encore la gestion des risques.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-21439\" src=\"https:\/\/ngi.be\/app\/uploads\/2026\/07\/E-005.jpg\" alt=\"\" width=\"1920\" height=\"1280\" srcset=\"https:\/\/ngi.be\/app\/uploads\/2026\/07\/E-005.jpg 1920w, https:\/\/ngi.be\/app\/uploads\/2026\/07\/E-005-300x200.jpg 300w, https:\/\/ngi.be\/app\/uploads\/2026\/07\/E-005-1024x683.jpg 1024w, https:\/\/ngi.be\/app\/uploads\/2026\/07\/E-005-768x512.jpg 768w, https:\/\/ngi.be\/app\/uploads\/2026\/07\/E-005-1536x1024.jpg 1536w, https:\/\/ngi.be\/app\/uploads\/2026\/07\/E-005-1200x800.jpg 1200w, https:\/\/ngi.be\/app\/uploads\/2026\/07\/E-005-220x147.jpg 220w, https:\/\/ngi.be\/app\/uploads\/2026\/07\/E-005-525x350.jpg 525w\" sizes=\"auto, (max-width: 1920px) 100vw, 1920px\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Du 23 au 25 juin, l\u2019Institut g\u00e9ographique national (IGN) a particip\u00e9 au symposium EUREF 2026, organis\u00e9 \u00e0 Paris par l\u2019IGN France. Ce rendez-vous annuel r\u00e9unit la communaut\u00e9 g\u00e9od\u00e9sique europ\u00e9enne charg\u00e9e de d\u00e9velopper et de maintenir les syst\u00e8mes de r\u00e9f\u00e9rence g\u00e9od\u00e9siques qui constituent le socle du positionnement, de la cartographie et de nombreuses applications scientifiques \u00e0&#8230;<\/p>\n","protected":false},"author":13,"featured_media":21447,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13],"tags":[],"class_list":["post-21450","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-non-classifiee"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>L\u2019IGN contribue \u00e0 fa\u00e7onner l\u2019avenir des syst\u00e8mes de r\u00e9f\u00e9rence g\u00e9od\u00e9siques europ\u00e9ens \u00e0 EUREF 2026 - IGN<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ngi.be\/fr\/lign-contribue-a-faconner-lavenir-des-systemes-de-reference-geodesiques-europeens-a-euref-2026\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"L\u2019IGN contribue \u00e0 fa\u00e7onner l\u2019avenir des syst\u00e8mes de r\u00e9f\u00e9rence g\u00e9od\u00e9siques europ\u00e9ens \u00e0 EUREF 2026 - IGN\" \/>\n<meta property=\"og:description\" content=\"Du 23 au 25 juin, l\u2019Institut g\u00e9ographique national (IGN) a particip\u00e9 au symposium EUREF 2026, organis\u00e9 \u00e0 Paris par l\u2019IGN France. 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