{"id":113,"date":"2021-05-14T00:00:50","date_gmt":"2021-05-14T00:00:50","guid":{"rendered":"https:\/\/jtrfdev.jpl.nasa.gov\/?page_id=113"},"modified":"2024-07-12T19:24:12","modified_gmt":"2024-07-12T19:24:12","slug":"jpl-terrestrial-reference-frame","status":"publish","type":"page","link":"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/","title":{"rendered":"JPL Terrestrial Reference Frame"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"113\" class=\"elementor elementor-113\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-9b8fdd0 elementor-section-full_width elementor-section-height-min-height elementor-section-height-default elementor-section-items-middle\" data-id=\"9b8fdd0\" 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-259c6c7\" data-id=\"259c6c7\" 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-5fa00f8 elementor-invisible elementor-widget elementor-widget-image\" data-id=\"5fa00f8\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInDown&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<img decoding=\"async\" src=\"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-content\/uploads\/elementor\/thumbs\/JTRF_logo_w_shadow_2023-06-26_1500px-q8z6c1vdahsldgaewagtkjue60w793t9e2mo0pdsro.png\" title=\"JTRF_logo_w_shadow_2023-06-26_1500px\" alt=\"JTRF_logo_w_shadow_2023-06-26_1500px\" loading=\"lazy\" \/>\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-3239929 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"3239929\" 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-1eb8d90\" data-id=\"1eb8d90\" 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-83664f5 elementor-widget elementor-widget-heading\" data-id=\"83664f5\" 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 Terrestrial Reference Frames<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-31d2e95 elementor-widget elementor-widget-text-editor\" data-id=\"31d2e95\" 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 Terrestrial Reference Frame (TRF) is an accurate, stable set of positions and velocities of reference points on the surface of the Earth. The TRF provides the stable coordinate system that allows us to link measurements over space and time for numerous scientific and societal applications including climate and sea level change studies. Because of the need for precision, the TRF reference points are positions of &#8220;stations&#8221; on the Earth&#8217;s surface making observations using one of four Space Geodesy Techniques:<\/p>\n<ul>\n<li>Doppler &amp; Radiopositioning Integrated by Satellite (DORIS)<\/li>\n<li>Global Navigation Satellite Systems (GNSS), such as the US Global Positioning System (GPS)<\/li>\n<li>Satellite Laser Ranging (SLR)<\/li>\n<li>Very Long Baseline Interferometry (VLBI)<\/li>\n<\/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-1160954\" data-id=\"1160954\" 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-e26f758 elementor-invisible elementor-widget elementor-widget-image\" data-id=\"e26f758\" 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-model.webp\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"trf-model\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MjA2NSwidXJsIjoiaHR0cHM6XC9cL2pzZ3QuanBsLm5hc2EuZ292XC9qdHJmXC93cC1jb250ZW50XC91cGxvYWRzXC8yMDIyXC8wNVwvdHJmLW1vZGVsLndlYnAifQ%3D%3D\">\n\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"628\" height=\"578\" src=\"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-content\/uploads\/2022\/05\/trf-model.webp\" class=\"attachment-large size-large wp-image-2065\" alt=\"Terrestrial Reference Frame diagram\" srcset=\"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-content\/uploads\/2022\/05\/trf-model.webp 628w, https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-content\/uploads\/2022\/05\/trf-model-300x276.webp 300w\" sizes=\"(max-width: 628px) 100vw, 628px\" \/>\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-b074ead elementor-reverse-mobile elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"b074ead\" 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-33 elementor-top-column elementor-element elementor-element-b179f61\" data-id=\"b179f61\" data-element_type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\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-29fd768 elementor-invisible elementor-widget elementor-widget-image\" data-id=\"29fd768\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;slideInLeft&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\/opmt.webp\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"opmt\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MjA0MCwidXJsIjoiaHR0cHM6XC9cL2pzZ3QuanBsLm5hc2EuZ292XC9qdHJmXC93cC1jb250ZW50XC91cGxvYWRzXC8yMDIyXC8wNVwvb3BtdC53ZWJwIn0%3D\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1000\" height=\"756\" src=\"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-content\/uploads\/2022\/05\/opmt.webp\" class=\"attachment-full size-full wp-image-2040\" alt=\"OPMT GNSS Station Time Series Plot\" srcset=\"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-content\/uploads\/2022\/05\/opmt.webp 1000w, https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-content\/uploads\/2022\/05\/opmt-300x227.webp 300w, https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-content\/uploads\/2022\/05\/opmt-768x581.webp 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/>\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<div class=\"elementor-column elementor-col-66 elementor-top-column elementor-element elementor-element-e450868\" data-id=\"e450868\" 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-67e5006 elementor-widget elementor-widget-heading\" data-id=\"67e5006\" 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\">A Sequential Estimation Approach<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ddb2dcb elementor-widget elementor-widget-text-editor\" data-id=\"ddb2dcb\" 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>In the traditional approach to determining Terrestrial Reference Frames, the Frame is the model fit to station position observations that span a fixed interval of time such as 1979-2014. Station positions at times outside the interval are based on model predictions. As actual station positions deviate from the model predictions the Frame needs to be re-determined, typically at intervals of 5-6 years.<\/p><p>The JPL Terrestrial Reference Frame (JTRF) approach is different. Rather than a model, the JPL Frame is represented by a set of time series of smoothed, observed station positions. A model is still fit to the observed station positions and is used to interpolate across gaps in the observations and to predict the future position of the stations. An advantage of the sequential estimation approach is that station positions and predictions can be easily updated as new geodetic observations become available.<\/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-a3871ea elementor-widget elementor-widget-button\" data-id=\"a3871ea\" 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<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-md\" href=\"\/jtrf\/approach\/\">\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\">Learn More about JPL's Approach<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/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-1c3fc28 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1c3fc28\" data-element_type=\"section\" data-settings=\"{&quot;animation&quot;:&quot;none&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-cf0853d\" data-id=\"cf0853d\" 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-f065cf1 elementor-widget elementor-widget-heading\" data-id=\"f065cf1\" 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 Solutions<\/h2>\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-6fb9a9d elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6fb9a9d\" data-element_type=\"section\" data-settings=\"{&quot;animation&quot;:&quot;none&quot;,&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-5000014\" data-id=\"5000014\" 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-a22d1e6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a22d1e6\" data-element_type=\"section\" data-settings=\"{&quot;animation&quot;:&quot;none&quot;,&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-e3b08a3\" data-id=\"e3b08a3\" data-element_type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\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-ce7880b elementor-widget elementor-widget-heading\" data-id=\"ce7880b\" 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\">JTRF2020<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2252ac1 elementor-widget elementor-widget-text-editor\" data-id=\"2252ac1\" 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\tJTRF2020 is the Terrestrial Reference Frame (TRF) the Jet Propulsion Laboratory constructed by combining space geodetic inputs spanning 1979-2020 from Very Long Baseline Interferometry (VLBI), Satellite Laser Ranging (SLR), Global Navigation Satellite Systems (GNSS) and Doppler Orbitography and Radiopositioning Integrated by Satellite (DORIS) submitted for the determination of ITRF2020. Created through a square-root information filter (SRIF) and Dyer-McReynolds covariance smoother (DMCS) assimilating station position observations, Earth Orientation Parameters (EOPs), and local ties, JTRF2020 is a sub-secular, time series-based TRF whose origin is at the quasi-instantaneous Center of Mass (CM) of the Earth as sensed by SLR and whose scale is determined by the quasi-instantaneous VLBI and SLR scales.\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fe69d3b elementor-widget elementor-widget-button\" data-id=\"fe69d3b\" 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<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-md\" href=\"\/jtrf\/solutions\/jtrf2020\/\">\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\">Learn More about JTRF2020<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/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-7744064 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7744064\" data-element_type=\"section\" data-settings=\"{&quot;animation&quot;:&quot;none&quot;,&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-f4b7c79\" data-id=\"f4b7c79\" data-element_type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\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-6069f9c elementor-widget elementor-widget-heading\" data-id=\"6069f9c\" 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\">JTRF2014<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2257c96 elementor-widget elementor-widget-text-editor\" data-id=\"2257c96\" 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\tJTRF2014 is the Terrestrial Reference Frame (TRF) the Jet Propulsion Laboratory constructed by combining space geodetic inputs spanning 1979-2014 from Very Long Baseline Interferometry (VLBI), Satellite Laser Ranging (SLR), Global Navigation Satellite Systems (GNSS) and Doppler Orbitography and Radiopositioning Integrated by Satellite (DORIS) submitted for the determination of ITRF2014. Created through a Kalman filter and RTS smoother assimilating station position observations, Earth Orientation Parameters (EOPs), and local ties, JTRF2014 is a sub-secular, time series-based TRF whose origin is at the quasi-instantaneous Center of Mass (CM) of the Earth as sensed by SLR and whose scale is determined by the quasi-instantaneous VLBI and SLR scales.\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f553436 elementor-widget elementor-widget-button\" data-id=\"f553436\" 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<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-md\" href=\"\/jtrf\/solutions\/jtrf2014\/\">\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\">Learn More about JTRF2014<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/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-e9b261b elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e9b261b\" data-element_type=\"section\" data-settings=\"{&quot;animation&quot;:&quot;none&quot;,&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-158128a\" data-id=\"158128a\" data-element_type=\"column\" data-settings=\"{&quot;animation&quot;:&quot;none&quot;}\">\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-00bb71f elementor-widget elementor-widget-heading\" data-id=\"00bb71f\" 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\">JTRF MAKES A DIFFERENCE<\/p>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2cf3b73 elementor-widget elementor-widget-heading\" data-id=\"2cf3b73\" 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\">Who does this benefit?<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-9784da2 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"9784da2\" 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-25 elementor-inner-column elementor-element elementor-element-ad5ff05\" data-id=\"ad5ff05\" data-element_type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\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-5812066 elementor-position-top elementor-widget elementor-widget-image-box\" data-id=\"5812066\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;none&quot;}\" data-widget_type=\"image-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><img decoding=\"async\" width=\"96\" height=\"96\" src=\"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-content\/uploads\/2022\/05\/analysis-center.webp\" class=\"attachment-full size-full wp-image-2057\" alt=\"Analysis Center Building\" \/><\/figure><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\">Analysis Centers<\/h3><p class=\"elementor-image-box-description\">Use TRFs for day to day research on satellite systems and geocenter motion.<\/p><\/div><\/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-25 elementor-inner-column elementor-element elementor-element-9f986f4\" data-id=\"9f986f4\" data-element_type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\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-e59854f elementor-position-top elementor-widget elementor-widget-image-box\" data-id=\"e59854f\" data-element_type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><img loading=\"lazy\" decoding=\"async\" width=\"96\" height=\"96\" src=\"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-content\/uploads\/2022\/05\/researchers.webp\" class=\"attachment-full size-full wp-image-2056\" alt=\"Magnifying Tool\" \/><\/figure><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\">Researchers<\/h3><p class=\"elementor-image-box-description\">Use TRFs to explore dynamic changes of the Earth's surface.<\/p><\/div><\/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-25 elementor-inner-column elementor-element elementor-element-8acb44a\" data-id=\"8acb44a\" data-element_type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\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-8ae6dec elementor-position-top elementor-widget elementor-widget-image-box\" data-id=\"8ae6dec\" data-element_type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><img loading=\"lazy\" decoding=\"async\" width=\"96\" height=\"96\" src=\"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-content\/uploads\/2022\/05\/professors.webp\" class=\"attachment-full size-full wp-image-2055\" alt=\"Book with Bookmark\" \/><\/figure><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\">Educators<\/h3><p class=\"elementor-image-box-description\">Professors use TRFs to educate students and early career scientists on different aspects of geodesy.<\/p><\/div><\/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-25 elementor-inner-column elementor-element elementor-element-6b136c1\" data-id=\"6b136c1\" data-element_type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\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-730fd60 elementor-position-top elementor-widget elementor-widget-image-box\" data-id=\"730fd60\" data-element_type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><img loading=\"lazy\" decoding=\"async\" width=\"96\" height=\"96\" src=\"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-content\/uploads\/2022\/05\/governments.webp\" class=\"attachment-full size-full wp-image-2054\" alt=\"Government building\" \/><\/figure><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\">Governments<\/h3><p class=\"elementor-image-box-description\">Use TRFs to register remote images from satellites and other platforms to accurate surface maps.<\/p><\/div><\/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\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-ad20d3e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"ad20d3e\" 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-25 elementor-inner-column elementor-element elementor-element-b7b2ee1\" data-id=\"b7b2ee1\" data-element_type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\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-8731dac elementor-position-top elementor-widget elementor-widget-image-box\" data-id=\"8731dac\" data-element_type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><img loading=\"lazy\" decoding=\"async\" width=\"96\" height=\"96\" src=\"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-content\/uploads\/2022\/05\/space-agency.webp\" class=\"attachment-full size-full wp-image-2053\" alt=\"Rocket\" \/><\/figure><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\">Space Agencies<\/h3><p class=\"elementor-image-box-description\">TRFs can assist space agencies on flight software and navigation systems.<\/p><\/div><\/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-25 elementor-inner-column elementor-element elementor-element-8e0864a\" data-id=\"8e0864a\" data-element_type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\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-116f4e8 elementor-position-top elementor-widget elementor-widget-image-box\" data-id=\"116f4e8\" data-element_type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><img loading=\"lazy\" decoding=\"async\" width=\"96\" height=\"96\" src=\"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-content\/uploads\/2022\/05\/mapping-agency.webp\" class=\"attachment-full size-full wp-image-2051\" alt=\"Folded Map\" \/><\/figure><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\">Mapping Agencies<\/h3><p class=\"elementor-image-box-description\">Use precise reference points based on frame-based geodesy.<\/p><\/div><\/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-25 elementor-inner-column elementor-element elementor-element-d433d3f\" data-id=\"d433d3f\" data-element_type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\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-08ec5fc elementor-position-top elementor-widget elementor-widget-image-box\" data-id=\"08ec5fc\" data-element_type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><img loading=\"lazy\" decoding=\"async\" width=\"96\" height=\"96\" src=\"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-content\/uploads\/2022\/05\/surveyor.webp\" class=\"attachment-full size-full wp-image-2050\" alt=\"Surveyor Camera\" \/><\/figure><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\">Surveyors<\/h3><p class=\"elementor-image-box-description\">Use TRFs to place their surveys within a common Frame.<\/p><\/div><\/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-25 elementor-inner-column elementor-element elementor-element-a098789\" data-id=\"a098789\" data-element_type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\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-2c7a392 elementor-position-top elementor-widget elementor-widget-image-box\" data-id=\"2c7a392\" data-element_type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><img loading=\"lazy\" decoding=\"async\" width=\"96\" height=\"96\" src=\"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-content\/uploads\/2022\/05\/general-public.webp\" class=\"attachment-full size-full wp-image-2052\" alt=\"GPS Navigation pin\" \/><\/figure><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\">General Public<\/h3><p class=\"elementor-image-box-description\">TRFs help provide daily GPS navigation data accurate to 1 meter.<\/p><\/div><\/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\t<\/div>\n\t\t<\/section>\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-21422fd elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"21422fd\" 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-7d9bd6c\" data-id=\"7d9bd6c\" 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-dd8b0e8 elementor-widget elementor-widget-heading\" data-id=\"dd8b0e8\" 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\">Latest News<\/h2>\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-271e6e7\" data-id=\"271e6e7\" 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-567d398 elementor-align-right elementor-widget elementor-widget-button\" data-id=\"567d398\" 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<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-md\" href=\"\/jtrf\/news\">\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\">VIEW ALL NEWS<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/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-5aad767 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5aad767\" 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-44e89f0\" data-id=\"44e89f0\" 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-2a52703 elementor-widget elementor-widget-elementskit-blog-posts\" data-id=\"2a52703\" data-element_type=\"widget\" data-widget_type=\"elementskit-blog-posts.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<div class=\"ekit-wid-con\" >        <div id=\"post-items--2a52703\" class=\"row post-items\">\n                    <div class=\"col-lg-4 col-md-6\">\n\n                                    <div class=\"elementskit-post-image-card\">\n                        <div class=\"elementskit-entry-header\">\n                                                            <a href=\"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/jtrf2020-coming-soon\/\" class=\"elementskit-entry-thumb\">\n                                    <img decoding=\"async\" src=\"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-content\/uploads\/2022\/05\/jtrf2020_map.webp\" alt=\"JTRF2020 Coming Soon\">\n                                <\/a><!-- .elementskit-entry-thumb END -->\n                                                                                                    <div class=\"elementskit-meta-lists\">\n                                        <div class=\"elementskit-single-meta\"><span class=\"elementskit-meta-wraper\"><strong>02<\/strong>Jun<\/span><\/div>\n                                    <\/div>\n                                                                                            \n                                                            <div class=\"elementskit-meta-categories\">\n                                    <span class=\"elementskit-meta-wraper\">\n                                        <span><a href=\"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/category\/general\/\" rel=\"category tag\">General<\/a><\/span><span><a href=\"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/category\/jtrf2020\/\" rel=\"category tag\">JTRF2020<\/a><\/span>\n                                    <\/span>\n                                <\/div>\n                            \n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div><!-- .elementskit-entry-header END -->\n\n\t\t\t\t\t\t<div class=\"elementskit-post-body \">\n\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<h2 class=\"entry-title\">\n\t\t\t\t\t<a href=\"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/jtrf2020-coming-soon\/\">\n\t\t\t\t\t\tJTRF2020 Coming Soon\t\t\t\t\t<\/a>\n\t\t\t\t<\/h2>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<p>JTRF2020, JPL&#8217;s sequentially estimated terrestrial reference frame determined\u00a0from GNSS, VLBI, SLR, and DORIS station position and EOP\u00a0data spanning 1979-2020, is expected to be available Spring 2022.<\/p>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t                                                            <div class=\"btn-wraper\">\n                                    \n                                                                            <a class=\"elementskit-btn whitespace--normal\" id=\"\" href=\"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/jtrf2020-coming-soon\/\">\n                                        \t                                            Read More about JTRF2020                                        <\/a>\n                                                                    <\/div>\n                                                    <\/div><!-- .elementskit-post-body END -->\n                    <\/div>\n                \n            <\/div>\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\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>About Terrestrial Reference Frames The Terrestrial Reference Frame (TRF) is an accurate, stable set of positions and velocities of reference points on the surface of the Earth. The TRF provides the stable coordinate system that allows us to link measurements over space and time for numerous scientific and societal applications including climate and sea level &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/jtrf2020-coming-soon\/\"> <span class=\"screen-reader-text\">JTRF2020 Coming Soon<\/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":"enabled","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\/113"}],"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=113"}],"version-history":[{"count":259,"href":"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-json\/wp\/v2\/pages\/113\/revisions"}],"predecessor-version":[{"id":3944,"href":"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-json\/wp\/v2\/pages\/113\/revisions\/3944"}],"wp:attachment":[{"href":"https:\/\/www.jpl.nasa.gov\/site\/jsgt\/jtrf\/wp-json\/wp\/v2\/media?parent=113"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}