{"id":6901,"date":"2023-06-11T16:43:45","date_gmt":"2023-06-11T16:43:45","guid":{"rendered":"https:\/\/raege-az.pt\/?p=6901"},"modified":"2023-12-12T17:30:03","modified_gmt":"2023-12-12T17:30:03","slug":"assessing-the-consistency-of-the-conventional-reference-frames-terrestrial-and-celestial-and-their-impact-on-estimated-eop-using-vlbi-based-data","status":"publish","type":"post","link":"https:\/\/raege-az.pt\/en\/assessing-the-consistency-of-the-conventional-reference-frames-terrestrial-and-celestial-and-their-impact-on-estimated-eop-using-vlbi-based-data\/","title":{"rendered":"Assessing The Consistency Of The Conventional Reference Frames (Terrestrial And Celestial) And Their Impact On Estimated EOP Using VLBI-Based Data"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"6901\" class=\"elementor elementor-6901\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-b750b3b elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"b750b3b\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-074f593\" data-id=\"074f593\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-55c3746 elementor-widget elementor-widget-text-editor\" data-id=\"55c3746\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The conventional International Terrestrial Reference Frame (ITRF) is based on the combination of solutions from several space geodetic techniques, including observations until the end of 2020, and incorporates updated data and models. In contrast, the Celestial Reference Frame (CRF) is a VLBI-only solution based on data until 2015. These differing approaches could potentially lead to a gradual loss of consistency among EOP series. The recent release of ITRF2020 presents an opportunity to investigate this issue further. This study empirically evaluates the consistency among different terrestrial reference frames (TRF) and the newest celestial reference frame (i.e. ICRF3), and EOP using historical Very Long Baseline Interferometry (VLBI) data from 1984 to 2022. Different TRFs are used as alternative settings in the analysis, including ITRF2020, VTRF2020, DTRF2020 and ITRF2014. Additionally, Helmert transformations are computed to determine the extent to which any observed behavior can be attributed to orientation differences of the TRFs. The results evidence the robustness of the different analyzed products, but more effort needs to be made to achieve the stringent goals for the ITRF realization in terms of accuracy (1 mm) and precision (0.1 mm\/year).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f6ac104 elementor-widget elementor-widget-text-editor\" data-id=\"f6ac104\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-size: 16px;\">Mariana Moreira<sup>[1]<\/sup><\/span>, Esther Azcue<sup>[2]<\/sup>, Maria Karbon<sup>[3]<\/sup>, Santiago Belda<sup>[4]<\/sup>, <span style=\"font-size: 16px;\">Victor Puente Garc\u00eda<sup>[2]<\/sup><\/span>, <span style=\"font-size: 16px;\">R.Heinkelmann<sup>[4]<\/sup><\/span>, <span style=\"font-size: 16px;\">D. Gordon<sup>[5]<\/sup><\/span>, <span style=\"font-size: 16px;\">J. Ferr\u00e1ndiz<sup>[3]<\/sup><\/span>,<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-20bec53 elementor-widget elementor-widget-text-editor\" data-id=\"20bec53\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Type\u00a0<\/strong>Presentation<\/p><p><strong>Event <\/strong>European VLBI Group for Geodesy and Astrometry 26<sup>th<\/sup> EVGA Working Meeting<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-326074b elementor-widget elementor-widget-text-editor\" data-id=\"326074b\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>[1] Atlantic International Research Centre, Terceira \u2013 Azores, Portugal | Esta\u00e7\u00e3o RAEGE de Santa Maria, Associa\u00e7\u00e3o RAEGE A\u00e7ores, Santa Maria \u2013 Azores, Portugal<\/p><p>[2] National Geographic Institute of Spain, Madrid, Spain<\/p><p>[3] UAVAC, Applied Mathematics Dept., University of Alicante, Alicante, Spain<\/p><p>[4] GFZ German Research Centre for Geosciences, Potsdam, Germany<\/p><p>[5] NVI, Inc.\/NASA Goddard Space Flight Center, United States of America<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cd1e58d elementor-widget elementor-widget-button\" data-id=\"cd1e58d\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"\/en\/publicacoes\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Voltar \u00e0 p\u00e1gina publica\u00e7\u00f5es<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>The conventional International Terrestrial Reference Frame (ITRF) is based on the combination of solutions from several space geodetic techniques, including observations until the end of 2020, and incorporates updated data and models. In contrast, the Celestial Reference Frame (CRF) is a VLBI-only solution based on data until 2015. These differing approaches could potentially lead to [&hellip;]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"elementor_theme","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[42,36,33],"tags":[],"class_list":["post-6901","post","type-post","status-publish","format-standard","hentry","category-42","category-apresentacao","category-publicacoes"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Assessing The Consistency Of The Conventional Reference Frames (Terrestrial And Celestial) And Their Impact On Estimated EOP Using VLBI-Based Data - RAEGE-Az<\/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:\/\/raege-az.pt\/en\/assessing-the-consistency-of-the-conventional-reference-frames-terrestrial-and-celestial-and-their-impact-on-estimated-eop-using-vlbi-based-data\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Assessing The Consistency Of The Conventional Reference Frames (Terrestrial And Celestial) And Their Impact On Estimated EOP Using VLBI-Based Data - RAEGE-Az\" \/>\n<meta property=\"og:description\" content=\"The conventional International Terrestrial Reference Frame (ITRF) is based on the combination of solutions from several space geodetic techniques, including observations until the end of 2020, and incorporates updated data and models. 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