{"id":452519,"date":"2023-07-19T00:57:21","date_gmt":"2023-07-19T04:57:21","guid":{"rendered":"https:\/\/www.nasa.gov\/?p=452519"},"modified":"2023-07-19T00:57:21","modified_gmt":"2023-07-19T04:57:21","slug":"tracking-and-data-relay-satellite-tdrs-generations-of-spacecraft","status":"publish","type":"post","link":"https:\/\/www.nasa.gov\/missions\/tdrs\/tracking-and-data-relay-satellite-tdrs-generations-of-spacecraft\/","title":{"rendered":"Tracking and Data Relay Satellite (TDRS) Generations of Spacecraft"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">First Generation<\/h2>\n\n\n<div id=\"\" class=\"hds-media hds-module wp-block-image\"><div class=\"margin-left-auto margin-right-auto nasa-block-align-inline\"><div class=\"hds-media-wrapper margin-left-auto margin-right-auto\"><figure class=\"hds-media-inner hds-cover-wrapper hds-media-ratio-fit \"><a href=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/first-generation-tdrs.png\"><img fetchpriority=\"high\" decoding=\"async\" width=\"985\" height=\"492\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/first-generation-tdrs.png?w=985\" class=\"attachment-2048x2048 size-2048x2048\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/first-generation-tdrs.png 985w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/first-generation-tdrs.png?resize=300,150 300w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/first-generation-tdrs.png?resize=768,384 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/first-generation-tdrs.png?resize=400,200 400w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/first-generation-tdrs.png?resize=600,300 600w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/first-generation-tdrs.png?resize=900,450 900w\" sizes=\"(max-width: 985px) 100vw, 985px\" loading=\"eager\" \/><\/a><\/figure><figcaption class=\"hds-caption padding-y-2\"><div class=\"hds-caption-text p-sm margin-0\">Capabilities of the first generation TDRS.<\/div><\/figcaption><\/div><\/div><\/div>\n\n\n<p><strong>Multiple Access Antenna<\/strong><\/p>\n\n\n\n<ul>\n<li>30 elements: 12 diplexed for transmit\/30 for receive<\/li>\n\n\n\n<li>S-band communications<\/li>\n\n\n\n<li>Circular polarization (Left Hand Circular (LHC) only)<\/li>\n\n\n\n<li>\u00b1 13\u00b0 conical field-of-view<\/li>\n<\/ul>\n\n\n\n<p><strong>Space-to-Ground Link Antenna<\/strong><\/p>\n\n\n\n<ul>\n<li>2.0 meter Ku-band antenna<\/li>\n\n\n\n<li>White Sands Complex (WSC)\/Guam Remote Ground Terminal (GRGT)-TDRS uplink\/downlink<\/li>\n\n\n\n<li>Perpendicular, linear polarization<\/li>\n<\/ul>\n\n\n\n<p><strong>Solar Panels (2)<\/strong><\/p>\n\n\n\n<p><strong>Single Access Antenna (2)<\/strong><\/p>\n\n\n\n<ul>\n<li>Dual \u2013 frequency communications\n<ul>\n<li>S-band<\/li>\n\n\n\n<li>Ku-band<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Circular polarization (Left Hand Circular (LHC) or Right Hand Circular (RHC))<\/li>\n\n\n\n<li>\u00b1 22\u00b0 E-W, \u00b1 28\u00b0 N-S rectangular field-of-view<\/li>\n<\/ul>\n\n\n\n<p><strong>Omni Antenna<\/strong><\/p>\n\n\n\n<ul>\n<li>S-band Telemetry, Tracking and Command (TT&C)<\/li>\n\n\n\n<li>Left Hand Circular (LHC) polarization<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n<div id=\"\" class=\"hds-media hds-module wp-block-image\"><div class=\"margin-left-auto margin-right-auto nasa-block-align-inline\"><div class=\"hds-media-wrapper margin-left-auto margin-right-auto\"><figure class=\"hds-media-inner hds-cover-wrapper hds-media-ratio-none \"><a href=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/tdrs1-release.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"320\" height=\"332\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/tdrs1-release.jpg?w=320\" class=\"attachment-2048x2048 size-2048x2048\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/tdrs1-release.jpg 320w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/tdrs1-release.jpg?resize=289,300 289w\" sizes=\"(max-width: 320px) 100vw, 320px\" \/><\/a><\/figure><figcaption class=\"hds-caption padding-y-2\"><div class=\"hds-caption-text p-sm margin-0\">TDRS-1 stack prior to release from the STS-6 payload bay<\/div><\/figcaption><\/div><\/div><\/div>\n\n<div id=\"\" class=\"hds-media hds-module wp-block-image\"><div class=\"margin-left-auto margin-right-auto nasa-block-align-inline\"><div class=\"hds-media-wrapper margin-left-auto margin-right-auto\"><figure class=\"hds-media-inner hds-cover-wrapper hds-media-ratio-none \"><a href=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/tdrs3deployment.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"320\" height=\"255\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/tdrs3deployment.jpg?w=320\" class=\"attachment-2048x2048 size-2048x2048\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/tdrs3deployment.jpg 320w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/tdrs3deployment.jpg?resize=300,239 300w\" sizes=\"(max-width: 320px) 100vw, 320px\" \/><\/a><\/figure><figcaption class=\"hds-caption padding-y-2\"><div class=\"hds-caption-text p-sm margin-0\">TDRS-3 deployment<\/div><\/figcaption><\/div><\/div><\/div>\n\n\n<h2 class=\"wp-block-heading\">Second Generation<\/h2>\n\n\n<div id=\"\" class=\"hds-media hds-module wp-block-image\"><div class=\"margin-left-auto margin-right-auto nasa-block-align-inline\"><div class=\"hds-media-wrapper margin-left-auto margin-right-auto\"><figure class=\"hds-media-inner hds-cover-wrapper hds-media-ratio-fit \"><a href=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/694465main-tdrs-2.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"667\" height=\"419\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/694465main-tdrs-2.jpg?w=667\" class=\"attachment-2048x2048 size-2048x2048\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/694465main-tdrs-2.jpg 667w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/694465main-tdrs-2.jpg?resize=300,188 300w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/694465main-tdrs-2.jpg?resize=400,251 400w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/694465main-tdrs-2.jpg?resize=600,377 600w\" sizes=\"(max-width: 667px) 100vw, 667px\" \/><\/a><\/figure><figcaption class=\"hds-caption padding-y-2\"><div class=\"hds-caption-text p-sm margin-0\">Capabilities of the second generation TDRS.<\/div><\/figcaption><\/div><\/div><\/div>\n\n\n<h3 class=\"wp-block-heading\"><strong>Capabilities Include:<\/strong><\/h3>\n\n\n\n<p><br><strong>Multiple Access Antenna<\/strong><\/p>\n\n\n\n<ul>\n<li>32 receive antenna elements<\/li>\n\n\n\n<li>15 transmit antenna elements<\/li>\n\n\n\n<li>S-band communications<\/li>\n\n\n\n<li>Left Hand Circular (LHC) polarization<\/li>\n\n\n\n<li>\u00b1 13\u00b0 conical field-of-view<\/li>\n<\/ul>\n\n\n\n<p><strong>Solar Panels (2)<br>Space-to-Ground Link Antenna<\/strong><\/p>\n\n\n\n<ul>\n<li>2.4 meter Ku-band antenna<\/li>\n\n\n\n<li>White Sands Complex (WSC)\/Guam Remote Ground Terminal (GRGT)-TDRS uplink\/downlink<\/li>\n\n\n\n<li>Perpendicular, linear polarization<\/li>\n\n\n\n<li>Modified frequency plan allows collocation<\/li>\n<\/ul>\n\n\n\n<p><strong>Single Access Antenna (2)<\/strong><\/p>\n\n\n\n<ul>\n<li>Tri-frequency communications\n<ul>\n<li>S-band<\/li>\n\n\n\n<li>Ku-band<\/li>\n\n\n\n<li>Ka-band<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Circular polarization (Left Hand Circular (LHC) or Right Hand Circular (RHC))<\/li>\n<\/ul>\n\n\n\n<p><strong>On-Board Operational Enhancements<\/strong><\/p>\n\n\n\n<ul>\n<li>On-board Single Access (SA) antenna control<\/li>\n\n\n\n<li>Autonomous recovery from anomalies<\/li>\n\n\n\n<li>Improved monitoring<\/li>\n<\/ul>\n\n\n\n<p><strong>Omni Antenna<\/strong><\/p>\n\n\n\n<ul>\n<li>S-band Telemetry, Tracking and Command (TT&C)<\/li>\n\n\n\n<li>Left Hand Circular (LHC) polarization<\/li>\n<\/ul>\n\n\n<div id=\"\" class=\"hds-media hds-module wp-block-image\"><div class=\"margin-left-auto margin-right-auto nasa-block-align-inline\"><div class=\"hds-media-wrapper margin-left-auto margin-right-auto\"><figure class=\"hds-media-inner hds-cover-wrapper hds-media-ratio-none \"><a href=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/tdrsh8.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"320\" height=\"476\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/tdrsh8.jpg?w=320\" class=\"attachment-2048x2048 size-2048x2048\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/tdrsh8.jpg 320w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/tdrsh8.jpg?resize=202,300 202w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/tdrsh8.jpg?resize=269,400 269w\" sizes=\"(max-width: 320px) 100vw, 320px\" \/><\/a><\/figure><figcaption class=\"hds-caption padding-y-2\"><div class=\"hds-caption-text p-sm margin-0\">TDRS-H launch<\/div><\/figcaption><\/div><\/div><\/div>\n\n<div id=\"\" class=\"hds-media hds-module wp-block-image\"><div class=\"margin-left-auto margin-right-auto nasa-block-align-inline\"><div class=\"hds-media-wrapper margin-left-auto margin-right-auto\"><figure class=\"hds-media-inner hds-cover-wrapper hds-media-ratio-none \"><a href=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/tdrs-j.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"320\" height=\"208\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/tdrs-j.jpg?w=320\" class=\"attachment-2048x2048 size-2048x2048\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/tdrs-j.jpg 320w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/tdrs-j.jpg?resize=300,195 300w\" sizes=\"(max-width: 320px) 100vw, 320px\" \/><\/a><\/figure><figcaption class=\"hds-caption padding-y-2\"><div class=\"hds-caption-text p-sm margin-0\">TDRS-J<\/div><\/figcaption><\/div><\/div><\/div>\n\n<div id=\"\" class=\"hds-media hds-module wp-block-image\"><div class=\"margin-left-auto margin-right-auto nasa-block-align-inline\"><div class=\"hds-media-wrapper margin-left-auto margin-right-auto\"><figure class=\"hds-media-inner hds-cover-wrapper hds-media-ratio-none \"><img decoding=\"async\" loading=\"lazy\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" src=\"https:\/\/www.nasa.gov\/f7d38f7b-56b1-4787-8cba-7f82f570bffb\" ><\/figure><\/div><\/div><\/div>\n\n\n<h2 class=\"wp-block-heading\">Third Generation<\/h2>\n\n\n<div id=\"\" class=\"hds-media hds-module wp-block-image\"><div class=\"margin-left-auto margin-right-auto nasa-block-align-inline\"><div class=\"hds-media-wrapper margin-left-auto margin-right-auto\"><figure class=\"hds-media-inner hds-cover-wrapper hds-media-ratio-fit \"><a href=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/tdrs-3rd-generation-0.png\"><img loading=\"lazy\" decoding=\"async\" width=\"985\" height=\"605\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/tdrs-3rd-generation-0.png?w=985\" class=\"attachment-2048x2048 size-2048x2048\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/tdrs-3rd-generation-0.png 985w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/tdrs-3rd-generation-0.png?resize=300,184 300w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/tdrs-3rd-generation-0.png?resize=768,472 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/tdrs-3rd-generation-0.png?resize=400,246 400w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/tdrs-3rd-generation-0.png?resize=600,369 600w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/tdrs-3rd-generation-0.png?resize=900,553 900w\" sizes=\"(max-width: 985px) 100vw, 985px\" \/><\/a><\/figure><figcaption class=\"hds-caption padding-y-2\"><div class=\"hds-caption-text p-sm margin-0\">Capabilities of the third generation TDRS.<\/div><\/figcaption><\/div><\/div><\/div>\n\n\n<h3 class=\"wp-block-heading\"><strong>Capabilities Include:<\/strong><\/h3>\n\n\n\n<p><strong>Multiple Access Antenna<\/strong><\/p>\n\n\n\n<ul>\n<li>32 receive antenna elements<\/li>\n\n\n\n<li>15 transmit antenna elements<\/li>\n\n\n\n<li>S-band communications<\/li>\n\n\n\n<li>Left Hand Circular (LHC) polarization<\/li>\n<\/ul>\n\n\n\n<p><strong>Solar Panels (2)<\/strong><\/p>\n\n\n\n<p><strong>Space-to-Ground Link Antenna<\/strong><\/p>\n\n\n\n<ul>\n<li>White Sands Complex (WSC)\/Guam Remote Ground Terminal (GRGT)-TDRS uplink\/downlink<\/li>\n\n\n\n<li>Perpendicular, linear polarization<\/li>\n<\/ul>\n\n\n\n<p><strong>Single Access Antenna (2)<\/strong><\/p>\n\n\n\n<ul>\n<li>Tri-frequency communications\n<ul>\n<li>S-band<\/li>\n\n\n\n<li>Ku-band<\/li>\n\n\n\n<li>Ka-band<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p><strong>Forward Omni Antenna<\/strong><\/p>\n\n\n\n<ul>\n<li>S-band Telemetry, Tracking, and Command (TT&C)<\/li>\n<\/ul>\n\n\n\n<p><strong>AFT Omni Antenna<\/strong><\/p>\n\n\n\n<ul>\n<li>S-band Telemetry, Tracking, and Command (TT&C)<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n<div id=\"\" class=\"hds-media hds-module wp-block-image\"><div class=\"margin-left-auto margin-right-auto nasa-block-align-inline\"><div class=\"hds-media-wrapper margin-left-auto margin-right-auto\"><figure class=\"hds-media-inner hds-cover-wrapper hds-media-ratio-none \"><a href=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/tdrs-klaunch.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"320\" height=\"481\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/tdrs-klaunch.jpg?w=320\" class=\"attachment-2048x2048 size-2048x2048\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/tdrs-klaunch.jpg 320w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/tdrs-klaunch.jpg?resize=200,300 200w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/tdrs-klaunch.jpg?resize=266,400 266w\" sizes=\"(max-width: 320px) 100vw, 320px\" \/><\/a><\/figure><figcaption class=\"hds-caption padding-y-2\"><div class=\"hds-caption-text p-sm margin-0\">TDRS-K launch<\/div><\/figcaption><\/div><\/div><\/div>\n\n<div id=\"\" class=\"hds-media hds-module wp-block-image\"><div class=\"margin-left-auto margin-right-auto nasa-block-align-inline\"><div class=\"hds-media-wrapper margin-left-auto margin-right-auto\"><figure class=\"hds-media-inner hds-cover-wrapper hds-media-ratio-none \"><a href=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/tdrs-l.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"320\" height=\"213\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/tdrs-l.jpg?w=320\" class=\"attachment-2048x2048 size-2048x2048\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/tdrs-l.jpg 320w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/tdrs-l.jpg?resize=300,200 300w\" sizes=\"(max-width: 320px) 100vw, 320px\" \/><\/a><\/figure><figcaption class=\"hds-caption padding-y-2\"><div class=\"hds-caption-text p-sm margin-0\">TDRS-L<\/div><\/figcaption><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>First Generation Multiple Access Antenna Space-to-Ground Link Antenna Solar Panels (2) Single Access Antenna (2) Omni Antenna Second Generation Capabilities Include: Multiple Access Antenna Solar Panels (2)Space-to-Ground Link Antenna Single Access Antenna (2) On-Board Operational Enhancements Omni Antenna Third Generation Capabilities Include: Multiple Access Antenna Solar Panels (2) Space-to-Ground Link Antenna Single Access Antenna (2) […]<\/p>\n","protected":false},"author":323,"featured_media":452525,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"nasa_hds_core_meta_l10n":"en-US","nasa_hds_core_meta_article_editor":"","nasa_hds_core_meta_article_contacts":[],"nasa_hds_core_meta_article_topic":"","nasa_hds_core_meta_linked_locations":[],"nasa_hds_core_meta_article_related_articles":[],"hds_migrate_meta_pr_release_id":"","hds_migrate_meta_pr_release_type":"","nasa_hds_core_meta_location_x":"","nasa_hds_core_meta_location_y":"","nasa_hds_core_meta_gallery_images":[],"footnotes":""},"categories":[2787,10576],"news-tags":[],"internal-terms":[11398],"coauthors":[11359],"parsely":{"version":"1.1.0","meta":{"@context":"https:\/\/schema.org","@type":"NewsArticle","headline":"Tracking and Data Relay Satellite (TDRS) Generations of Spacecraft","url":"https:\/\/www.nasa.gov\/missions\/tdrs\/tracking-and-data-relay-satellite-tdrs-generations-of-spacecraft\/","mainEntityOfPage":{"@type":"WebPage","@id":"https:\/\/www.nasa.gov\/missions\/tdrs\/tracking-and-data-relay-satellite-tdrs-generations-of-spacecraft\/"},"thumbnailUrl":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/694465main-tdrs-2.jpg?w=150&h=150&crop=1","image":{"@type":"ImageObject","url":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/694465main-tdrs-2.jpg"},"articleSection":"Missions","author":[{"@type":"Person","name":"Catherine G. Manning"}],"creator":["Catherine G. Manning"],"publisher":{"@type":"Organization","name":"NASA","logo":"https:\/\/www.nasa.gov\/wp-content\/themes\/nasa\/assets\/images\/nasa-logo.svg"},"keywords":["Technology","Communicating and Navigating with Missions","Tracking and Data Relay Satellite (TDRS)"],"dateCreated":"2023-07-19T04:57:21Z","datePublished":"2023-07-19T04:57:21Z","dateModified":"2023-07-19T04:57:21Z"},"rendered":"<meta name=\"parsely-title\" content=\"Tracking and Data Relay Satellite (TDRS) Generations of Spacecraft\" \/>\n<meta name=\"parsely-link\" content=\"https:\/\/www.nasa.gov\/missions\/tdrs\/tracking-and-data-relay-satellite-tdrs-generations-of-spacecraft\/\" \/>\n<meta name=\"parsely-type\" content=\"post\" \/>\n<meta name=\"parsely-image-url\" content=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/694465main-tdrs-2.jpg?w=150&h=150&crop=1\" \/>\n<meta name=\"parsely-pub-date\" content=\"2023-07-19T04:57:21Z\" \/>\n<meta name=\"parsely-section\" content=\"Missions\" \/>\n<meta name=\"parsely-tags\" content=\"Technology,Communicating and Navigating with Missions,Tracking and Data Relay Satellite (TDRS)\" \/>\n<meta name=\"parsely-author\" content=\"Catherine G. Manning\" \/>","tracker_url":"https:\/\/cdn.parsely.com\/keys\/nasa.gov\/p.js"},"read_time":2,"time_ago":"11 months","featured_image":{"id":452525,"file":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/694465main-tdrs-2.jpg","title":"694465main-tdrs-2","alt":"","caption":"Capabilities of the second generation TDRS."},"_links":{"self":[{"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/posts\/452519"}],"collection":[{"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/users\/323"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/comments?post=452519"}],"version-history":[{"count":5,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/posts\/452519\/revisions"}],"predecessor-version":[{"id":452538,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/posts\/452519\/revisions\/452538"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/media\/452525"}],"wp:attachment":[{"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/media?parent=452519"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/categories?post=452519"},{"taxonomy":"news-tags","embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/news-tags?post=452519"},{"taxonomy":"internal-terms","embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/internal-terms?post=452519"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/coauthors?post=452519"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}