{"id":20,"date":"2021-05-06T22:48:19","date_gmt":"2021-05-06T22:48:19","guid":{"rendered":"https:\/\/jtrfdev.jpl.nasa.gov\/?page_id=20"},"modified":"2024-07-12T19:24:11","modified_gmt":"2024-07-12T19:24:11","slug":"about","status":"publish","type":"page","link":"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/about\/","title":{"rendered":"About"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"20\" class=\"elementor elementor-20\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-082c8d1 elementor-section-full_width elementor-section-height-min-height elementor-section-height-default elementor-section-items-middle\" data-id=\"082c8d1\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\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-a0b566b\" data-id=\"a0b566b\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-5aa7a60 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5aa7a60\" 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-0583802\" data-id=\"0583802\" 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-8b91afa elementor-widget elementor-widget-heading\" data-id=\"8b91afa\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<p class=\"elementor-heading-title elementor-size-default\">WHAT IS JTRF?<\/p>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fbc6bce elementor-widget elementor-widget-heading\" data-id=\"fbc6bce\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">About<\/h1>\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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-43daf84 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"43daf84\" 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-66 elementor-top-column elementor-element elementor-element-a69976d\" data-id=\"a69976d\" 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-6341912 elementor-widget elementor-widget-heading\" data-id=\"6341912\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What is a Terrestrial Reference Frame?<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a4c5752 elementor-widget elementor-widget-text-editor\" data-id=\"a4c5752\" 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<p>The definition of a Terrestrial Reference Frame (TRF) is foundational for virtually all space-based and ground-based Earth observation programs. The positions of objects are determined in relation to an underlying TRF and the accuracy with which such objects can be georeferenced ultimately depends upon the intrinsic frame accuracy. Terrestrial (and celestial) reference frames determined by space-geodetic (SG) observing systems provide the universal standard against which the Earth&#8217;s changing shape, and its rotation are measured and represent the tool through which space- and ground-based Earth observations can be connected in space and in time.<\/p>\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<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-5340796\" data-id=\"5340796\" 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-13cef3a elementor-invisible elementor-widget elementor-widget-image\" data-id=\"13cef3a\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;slideInRight&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-content\/uploads\/2022\/05\/trf-diagram.webp\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"trf-diagram\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MjA0OSwidXJsIjoiaHR0cHM6XC9cL2pzZ3QuanBsLm5hc2EuZ292XC9qdHJmXC93cC1jb250ZW50XC91cGxvYWRzXC8yMDIyXC8wNVwvdHJmLWRpYWdyYW0ud2VicCJ9\">\n\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"337\" height=\"254\" src=\"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-content\/uploads\/2022\/05\/trf-diagram.webp\" class=\"elementor-animation-grow attachment-full size-full wp-image-2049\" alt=\"Terrestrial Reference Frame diagram\" srcset=\"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-content\/uploads\/2022\/05\/trf-diagram.webp 337w, https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-content\/uploads\/2022\/05\/trf-diagram-300x226.webp 300w\" sizes=\"(max-width: 337px) 100vw, 337px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-e2ba1da elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e2ba1da\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\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-66 elementor-top-column elementor-element elementor-element-e09fc50\" data-id=\"e09fc50\" 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-ae31235 elementor-widget elementor-widget-heading\" data-id=\"ae31235\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">The International Terrestrial Reference Frame<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e25f8b5 elementor-widget elementor-widget-text-editor\" data-id=\"e25f8b5\" 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<p>The international standard TRF is the International Terrestrial Reference Frame (ITRF). The ITRF is accurate and precise enough to support even applications with the most demanding requirements for positioning. The ITRF is a product of the International Association of Geodesy (IAG). The IAG&#8217;s International DORIS Service (IDS), International GNSS Service (IGS), International Laser Ranging Service (ILRS), and International VLBI Service for Geodesy and Astrometry (IVS) provide precise positions of ground stations of their respective Networks of stations. The IAG International Earth Rotation and Reference Systems Service (IERS) then combines the Network station positions, augmented with other data, to produce the ITRF and makes it available to the international community to ensure consistency and interoperability of positioning systems.<\/p>\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<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-6faa0c4\" data-id=\"6faa0c4\" 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-4757779 elementor-invisible elementor-widget elementor-widget-image\" data-id=\"4757779\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;slideInRight&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-content\/uploads\/2022\/05\/iag-iers.webp\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"iag-iers\" data-elementor-lightbox-description=\"International Association of Geodesy https:\/\/www.iag-aig.org\/ International Earth Rotation and Reference Systems Service https:\/\/www.iers.org\/\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MjA0OCwidXJsIjoiaHR0cHM6XC9cL2pzZ3QuanBsLm5hc2EuZ292XC9qdHJmXC93cC1jb250ZW50XC91cGxvYWRzXC8yMDIyXC8wNVwvaWFnLWllcnMud2VicCJ9\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"483\" height=\"327\" src=\"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-content\/uploads\/2022\/05\/iag-iers.webp\" class=\"elementor-animation-grow attachment-full size-full wp-image-2048\" alt=\"International Association of Geodesy and International Earth Rotation and Reference Systems Service\" srcset=\"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-content\/uploads\/2022\/05\/iag-iers.webp 483w, https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-content\/uploads\/2022\/05\/iag-iers-300x203.webp 300w\" sizes=\"(max-width: 483px) 100vw, 483px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-e9dc05c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e9dc05c\" 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-66 elementor-top-column elementor-element elementor-element-d54ade7\" data-id=\"d54ade7\" 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-ebda951 elementor-widget elementor-widget-heading\" data-id=\"ebda951\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">About JPL Terrestrial Reference Frame (JTRF)<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c05eb2f elementor-widget elementor-widget-text-editor\" data-id=\"c05eb2f\" 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<p><span style=\"font-family: 'Metropolis Body', Helvetica, Arial, sans-serif;\">The JPL Terrestrial Reference Frame is a\u00a0<\/span><span style=\"font-weight: bold; font-family: 'Metropolis Body', Helvetica, Arial, sans-serif;\">Terrestrial Reference Frame Combination Center (TRF CC)<\/span><span style=\"font-family: 'Metropolis Body', Helvetica, Arial, sans-serif;\">\u00a0as a part of the <a href=\"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/\"><strong>JPL Space Geodesy Task (JSGT)<\/strong><\/a>. It uses data and analysis products from all geodetic techniques to produce and provide a high-quality combined terrestrial reference frame (TRF) and other products to support NASA\u2019s missions and science. The TRF CC also supports the International Earth Rotation and Reference Systems Service (IERS) by providing candidate solutions for the International Terrestrial Reference Frame (ITRF) and assessing the quality of candidate solutions from other institutions.<\/span><\/p>\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<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-6dff2c7\" data-id=\"6dff2c7\" 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-5363998 elementor-invisible elementor-widget elementor-widget-image\" data-id=\"5363998\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;slideInRight&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-content\/uploads\/2023\/07\/JTRF_logo_w_shadow_2023-06-26_1500px.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"JTRF_logo_w_shadow_2023-06-26_1500px\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MzQ2NCwidXJsIjoiaHR0cHM6XC9cL2pzZ3QuanBsLm5hc2EuZ292XC9qdHJmXC93cC1jb250ZW50XC91cGxvYWRzXC8yMDIzXC8wN1wvSlRSRl9sb2dvX3dfc2hhZG93XzIwMjMtMDYtMjZfMTUwMHB4LnBuZyJ9\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1500\" height=\"758\" src=\"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-content\/uploads\/2023\/07\/JTRF_logo_w_shadow_2023-06-26_1500px.png\" class=\"elementor-animation-grow attachment-full size-full wp-image-3464\" alt=\"\" srcset=\"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-content\/uploads\/2023\/07\/JTRF_logo_w_shadow_2023-06-26_1500px.png 1500w, https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-content\/uploads\/2023\/07\/JTRF_logo_w_shadow_2023-06-26_1500px-300x152.png 300w, https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-content\/uploads\/2023\/07\/JTRF_logo_w_shadow_2023-06-26_1500px-1024x517.png 1024w, https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-content\/uploads\/2023\/07\/JTRF_logo_w_shadow_2023-06-26_1500px-768x388.png 768w\" sizes=\"(max-width: 1500px) 100vw, 1500px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-a63f26f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a63f26f\" 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-433c223\" data-id=\"433c223\" 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-fc327cb elementor-widget elementor-widget-menu-anchor\" data-id=\"fc327cb\" data-element_type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"outreach\"><\/div>\n\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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-f791cbf elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f791cbf\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-wide\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-top-column elementor-element elementor-element-aff2681\" data-id=\"aff2681\" 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-76c6625 elementor-widget elementor-widget-heading\" data-id=\"76c6625\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Outreach and Education Resources<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e0e0dc7 elementor-widget elementor-widget-text-editor\" data-id=\"e0e0dc7\" 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<p>To learn more about geodesy and reference frames, see the following resources below.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6c901b8 elementor-widget elementor-widget-elementskit-accordion\" data-id=\"6c901b8\" data-element_type=\"widget\" data-widget_type=\"elementskit-accordion.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<div class=\"ekit-wid-con\" >\n        <div class=\"elementskit-accordion accoedion-primary\" id=\"accordion-69d20b732adf9\">\n\n            \n                <div class=\"elementskit-card \">\n                    <div class=\"elementskit-card-header\" id=\"primaryHeading-0-6c901b8\">\n                        <a href=\"#collapse-7c96eea69d20b732adf9\" class=\"ekit-accordion--toggler elementskit-btn-link collapsed\" data-ekit-toggle=\"collapse\" data-target=\"#Collapse-7c96eea69d20b732adf9\" aria-expanded=\"false\" aria-controls=\"Collapse-7c96eea69d20b732adf9\">\n                            \n                            <span class=\"ekit-accordion-title\">Terrestrial Reference Frames<\/span>\n\n                            \n                                <div class=\"ekit_accordion_icon_group\">\n                                    <div class=\"ekit_accordion_normal_icon\">\n                                        <!-- Normal Icon -->\n\t\t\t\t\t\t\t\t\t\t<i class=\"fas fa-angle-down\"><\/i>                                    <\/div>\n\n                                    <div class=\"ekit_accordion_active_icon\">\n                                        <!-- Active Icon -->\n\t\t\t\t\t\t\t\t\t\t<i class=\"fas fa-angle-up\"><\/i>                                    <\/div>\n                                <\/div>\n\n                            \n                                                    <\/a>\n                    <\/div>\n\n                    <div id=\"Collapse-7c96eea69d20b732adf9\" class=\" collapse\" aria-labelledby=\"primaryHeading-0-6c901b8\" data-parent=\"#accordion-69d20b732adf9\">\n\n                        <div class=\"elementskit-card-body ekit-accordion--content\">\n                            <ul>\n \t<li><span style=\"text-decoration: underline;color:red\"><a href=\"https:\/\/www.iers.org\/IERS\/EN\/DataProducts\/ITRF\/itrf.html\">IERS International Terrestrial Reference Frame<\/a><\/span><\/li>\n \t<li><span style=\"text-decoration: underline;color:red\"><a href=\"https:\/\/www.iers.org\/IERS\/EN\/DataProducts\/ITRF\/OtherRealizations\/OtherRealizations.html\">Other ITRF Realizations<\/a><\/span><\/li>\n \t<li><span style=\"text-decoration: underline;color:red\"><a href=\"https:\/\/www.iers.org\/IERS\/EN\/Organization\/ITRSCombinationCentres\/ITRSCC.html\">ITRS Combination Centres<\/a><\/span><\/li>\n<\/ul>                        <\/div>\n\n                    <\/div>\n\n                <\/div><!-- .elementskit-card END -->\n\n                \n                <div class=\"elementskit-card \">\n                    <div class=\"elementskit-card-header\" id=\"primaryHeading-1-6c901b8\">\n                        <a href=\"#collapse-438adc669d20b732adf9\" class=\"ekit-accordion--toggler elementskit-btn-link collapsed\" data-ekit-toggle=\"collapse\" data-target=\"#Collapse-438adc669d20b732adf9\" aria-expanded=\"false\" aria-controls=\"Collapse-438adc669d20b732adf9\">\n                            \n                            <span class=\"ekit-accordion-title\">Geodesy<\/span>\n\n                            \n                                <div class=\"ekit_accordion_icon_group\">\n                                    <div class=\"ekit_accordion_normal_icon\">\n                                        <!-- Normal Icon -->\n\t\t\t\t\t\t\t\t\t\t<i class=\"fas fa-angle-down\"><\/i>                                    <\/div>\n\n                                    <div class=\"ekit_accordion_active_icon\">\n                                        <!-- Active Icon -->\n\t\t\t\t\t\t\t\t\t\t<i class=\"fas fa-angle-up\"><\/i>                                    <\/div>\n                                <\/div>\n\n                            \n                                                    <\/a>\n                    <\/div>\n\n                    <div id=\"Collapse-438adc669d20b732adf9\" class=\" collapse\" aria-labelledby=\"primaryHeading-1-6c901b8\" data-parent=\"#accordion-69d20b732adf9\">\n\n                        <div class=\"elementskit-card-body ekit-accordion--content\">\n                            <ul>\n \t<li><span style=\"text-decoration: underline;color:red\"><a href=\"https:\/\/youtu.be\/BCK5Zj--w7w\">9 Impacts of Geodesy [UNAVCO]<\/a><\/span><\/li>\n \t<li><span style=\"text-decoration: underline;color:red\"><a href=\"https:\/\/www.unavco.org\/education\/education-resources\/posters\/\">UNAVCO Posters &amp; Graphics on Geodesy<\/a><\/span><\/li>\n \t<li><span style=\"text-decoration: underline;color:red\"><a href=\"https:\/\/cddis.nasa.gov\/index.html\">CDDIS - NASA's Archive of Space Geodesy Data<\/a><\/span><\/li>\n \t<li><span style=\"text-decoration: underline;color:red\"><a href=\"https:\/\/space-geodesy.nasa.gov\/multimedia\/videos\/EarthOrientationAnimations\/EOAnimations.html\">Earth Orientation Animations [NASA GSFC SGP]<\/a><\/span><\/li>\n \t<li><span style=\"text-decoration: underline;color:red\"><a href=\"https:\/\/space-geodesy.nasa.gov\/multimedia\/videos\/onTargetWithGPS\/onTargetWithGPSVideo.html\">\"On Target With GPS\" [NASA GSFC SGP]<\/a><\/span><\/li>\n \t<li><span style=\"text-decoration: underline;color:red\"><a href=\"https:\/\/www.facebook.com\/NASA.ESC\/videos\/10151571740191614\/\">\"SLR Pi Day Podcast\" [NASA GSFC SGP]<\/a><\/span><\/li>\n \t<li><span style=\"text-decoration: underline;color:red\"><a href=\"https:\/\/space-geodesy.nasa.gov\/multimedia\/videos\/vlbi_quasars\/VLBIQuasarsVideo.html\">\"Using Quasars to Measure the Earth: A History of VLBI\" [NASA GSFC SGP]<\/a><\/span><\/li>\n<\/ul>                        <\/div>\n\n                    <\/div>\n\n                <\/div><!-- .elementskit-card END -->\n\n                \n                <div class=\"elementskit-card \">\n                    <div class=\"elementskit-card-header\" id=\"primaryHeading-2-6c901b8\">\n                        <a href=\"#collapse-a2b949369d20b732adf9\" class=\"ekit-accordion--toggler elementskit-btn-link collapsed\" data-ekit-toggle=\"collapse\" data-target=\"#Collapse-a2b949369d20b732adf9\" aria-expanded=\"false\" aria-controls=\"Collapse-a2b949369d20b732adf9\">\n                            \n                            <span class=\"ekit-accordion-title\">Glossaries and Acronyms<\/span>\n\n                            \n                                <div class=\"ekit_accordion_icon_group\">\n                                    <div class=\"ekit_accordion_normal_icon\">\n                                        <!-- Normal Icon -->\n\t\t\t\t\t\t\t\t\t\t<i class=\"fas fa-angle-down\"><\/i>                                    <\/div>\n\n                                    <div class=\"ekit_accordion_active_icon\">\n                                        <!-- Active Icon -->\n\t\t\t\t\t\t\t\t\t\t<i class=\"fas fa-angle-up\"><\/i>                                    <\/div>\n                                <\/div>\n\n                            \n                                                    <\/a>\n                    <\/div>\n\n                    <div id=\"Collapse-a2b949369d20b732adf9\" class=\" collapse\" aria-labelledby=\"primaryHeading-2-6c901b8\" data-parent=\"#accordion-69d20b732adf9\">\n\n                        <div class=\"elementskit-card-body ekit-accordion--content\">\n                            JTRF\n\n<ul>\n \t<li><span style=\"text-decoration: underline;color: red\"><a href=\"\/jtrf\/glossary\/\">Glossary<\/a><\/span><\/li>\n<\/ul>\n<br>NASA GSFC SGP\n<ul>\n \t<li><a href=\"https:\/\/space-geodesy.nasa.gov\/about\/acronyms.html\"><span style=\"text-decoration: underline;color: red\">Acronyms<\/span><\/a><\/li>\n \t<li><span style=\"text-decoration: underline;color: red\"><span style=\"color: red\"><a href=\"https:\/\/space-geodesy.nasa.gov\/about\/dictionary.html\">Definitions<\/a><\/span><\/span><\/li>\n<\/ul>\n<br>IERS\n<ul>\n \t<li><span style=\"text-decoration: underline;color: red\"><a href=\"https:\/\/www.iers.org\/IERS\/EN\/Service\/Acronyms\/acronyms_node.html\">Acronyms<\/a><\/span><\/li>\n \t<li><span style=\"text-decoration: underline;color: red\"><a href=\"https:\/\/www.iers.org\/IERS\/EN\/Service\/Glossary\/glossary_node.html\">Glossary<\/a><\/span><\/li>\n<\/ul>                        <\/div>\n\n                    <\/div>\n\n                <\/div><!-- .elementskit-card END -->\n\n                                        <\/div>\n    <\/div>\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<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-58e59f5\" data-id=\"58e59f5\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-b01250a elementor-reverse-mobile elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"b01250a\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-wide\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-top-column elementor-element elementor-element-82f929d\" data-id=\"82f929d\" 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-c312bc7 elementor-widget elementor-widget-heading\" data-id=\"c312bc7\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Software Resources<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a5f1759 elementor-widget elementor-widget-text-editor\" data-id=\"a5f1759\" 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<p id=\"p0590\">Below you will find a list of helpful software to obtain JTRF solution data:<\/p><ul><li><a href=\"https:\/\/gipsy-oasis.jpl.nasa.gov\/index.php?page=home\">GipsyX<\/a> &#8211; developed by the Jet Propulsion Laboratory (JPL), and maintained by the Near Earth Tracking Applications and Systems groups. It replaces the GIPSY-OASIS (GNSS-Inferred Positioning System and Orbit Analysis Simulation Software) software.<\/li><\/ul>\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<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-ae1f60d\" data-id=\"ae1f60d\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-4d8c736 elementor-reverse-mobile elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4d8c736\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-wide\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-top-column elementor-element elementor-element-c8548a0\" data-id=\"c8548a0\" 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-04ef290 elementor-widget elementor-widget-heading\" data-id=\"04ef290\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Acknowledgements<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-314695f elementor-widget elementor-widget-text-editor\" data-id=\"314695f\" 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<p id=\"p0590\">This work was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration (NASA).<\/p><p id=\"p0415\">We thankfully acknowledge funding support from\u00a0<span id=\"gp005\">NASA\u2019s Space Geodesy Program.<\/span><\/p>\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<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-52cb3ec\" data-id=\"52cb3ec\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-ae93abb elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"ae93abb\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-wide\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-top-column elementor-element elementor-element-e8420b8\" data-id=\"e8420b8\" 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-18b6ecb elementor-widget elementor-widget-heading\" data-id=\"18b6ecb\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">JTRF Team<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ac95e1f elementor-align-left elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"ac95e1f\" data-element_type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"mailto:Richard.S.Gross@jpl.nasa.gov\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Richard Gross<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"mailto:Claudio.Abbondanza@jpl.nasa.gov\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Claudio Abbondanza<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"mailto:Toshio.M.Chin@jpl.nasa.gov\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Mike Chin<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"mailto:Michael.J.Connally@jpl.nasa.gov\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Mick Connally<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"mailto:Michael.B.Heflin@jpl.nasa.gov\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Mike Heflin<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"mailto:David.W.Martin@jpl.nasa.gov\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">David Martin<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"mailto:Jay.W.Parker@jpl.nasa.gov\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Jay Parker<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\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<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-47d4fc0\" data-id=\"47d4fc0\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\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>\n\t\t","protected":false},"excerpt":{"rendered":"<p>WHAT IS JTRF? About What is a Terrestrial Reference Frame? The definition of a Terrestrial Reference Frame (TRF) is foundational for virtually all space-based and ground-based Earth observation programs. The positions of objects are determined in relation to an underlying TRF and the accuracy with which such objects can be georeferenced ultimately depends upon the &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/about\/\"> <span class=\"screen-reader-text\">About<\/span> Read More \u00bb<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"no-sidebar","site-content-layout":"page-builder","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"disabled","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":""},"_links":{"self":[{"href":"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-json\/wp\/v2\/pages\/20"}],"collection":[{"href":"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-json\/wp\/v2\/comments?post=20"}],"version-history":[{"count":140,"href":"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-json\/wp\/v2\/pages\/20\/revisions"}],"predecessor-version":[{"id":3943,"href":"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-json\/wp\/v2\/pages\/20\/revisions\/3943"}],"wp:attachment":[{"href":"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-json\/wp\/v2\/media?parent=20"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}