{"id":1648,"date":"2025-04-30T09:50:00","date_gmt":"2025-04-30T06:50:00","guid":{"rendered":"https:\/\/tudengisatelliit.ee\/?p=1648"},"modified":"2025-11-23T17:06:42","modified_gmt":"2025-11-23T15:06:42","slug":"what-is-a-transponder","status":"publish","type":"post","link":"https:\/\/tudengisatelliit.ee\/en\/what-is-a-transponder\/","title":{"rendered":"What is a transponder?"},"content":{"rendered":"\t\t
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The Estonian Student Satellite got funding from EIS to develop two projects, one of which is a transponder with a powerful integrated computing module. Our engineers reveal what the Transponder Project is and why it matters.<\/p>\n\n\n\n

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At its core, a transponder is a small but powerful and robust device that acts as a signal \u201cbooster\u201d and enables a satellite to communicate with ground stations by helping them to determine the spacecraft\u2019s position in space with high accuracy.<\/p>\n\n\n\n

Why is this important? As more satellites enter orbit and as future missions target the Moon and deep space, we need smarter, more autonomous spacecraft that can operate even when there\u2019s no real-time communication with Earth. That\u2019s where our transponder comes in \u2014 its integrated computing module is designed to support autonomous navigation, and the ground stations on Earth make use of the transponder\u2019s two-way ranging capabilities to measure Doppler shift to figure out the satellite\u2019s location, velocity, and direction.<\/p>\n\n\n\n

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The device we\u2019re building combines three subsystems:<\/p>\n\n\n\n

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  • A radio communication chain to send and receive signals from Earth,<\/li>\n<\/ul>\n\n\n\n
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    • A system-on-chip computing module that runs embedded Linux and even AI algorithms,<\/li>\n<\/ul>\n\n\n\n
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      • A robust power supply system to keep everything running, even in harsh space conditions.<\/li>\n<\/ul>\n\n\n\n
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        Together, these elements form a compact, high-performance transponder that could one day help satellites navigate far beyond Earth orbit \u2013 and also serve as a platform for testing onboard AI in space.<\/p>\n\n\n\n

        What makes this project special is that it\u2019s entirely student-driven under the Estonian Student Satellite Foundation, supported by mentors from industry and academia. It\u2019s a chance for students to develop real-world skills in space tech, RF design, embedded systems, and systems engineering — and it shows how Estonia continues to push boundaries in space.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

        The Estonian Student Satellite got funding from EIS to develop two projects, one of which is a transponder with a powerful integrated computing module. Our engineers reveal what the Transponder Project is and why it matters. At its core, a transponder is a small but powerful and robust device that acts as a signal \u201cbooster\u201d […]<\/p>\n","protected":false},"author":236210618,"featured_media":1650,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":true,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false},"version":2},"_wpas_customize_per_network":false,"jetpack_post_was_ever_published":false},"categories":[1388],"tags":[],"class_list":["post-1648","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tech"],"acf":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/tudengisatelliit.ee\/wp-content\/uploads\/2025\/04\/IMG_3366.jpg?fit=2560%2C1920&ssl=1","jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/peXfCC-qA","jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/tudengisatelliit.ee\/en\/wp-json\/wp\/v2\/posts\/1648","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tudengisatelliit.ee\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tudengisatelliit.ee\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tudengisatelliit.ee\/en\/wp-json\/wp\/v2\/users\/236210618"}],"replies":[{"embeddable":true,"href":"https:\/\/tudengisatelliit.ee\/en\/wp-json\/wp\/v2\/comments?post=1648"}],"version-history":[{"count":11,"href":"https:\/\/tudengisatelliit.ee\/en\/wp-json\/wp\/v2\/posts\/1648\/revisions"}],"predecessor-version":[{"id":2519,"href":"https:\/\/tudengisatelliit.ee\/en\/wp-json\/wp\/v2\/posts\/1648\/revisions\/2519"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tudengisatelliit.ee\/en\/wp-json\/wp\/v2\/media\/1650"}],"wp:attachment":[{"href":"https:\/\/tudengisatelliit.ee\/en\/wp-json\/wp\/v2\/media?parent=1648"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tudengisatelliit.ee\/en\/wp-json\/wp\/v2\/categories?post=1648"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tudengisatelliit.ee\/en\/wp-json\/wp\/v2\/tags?post=1648"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}