{"id":1336,"date":"2026-07-01T11:49:50","date_gmt":"2026-07-01T11:49:50","guid":{"rendered":"https:\/\/materials.simplycurrentaffairs.com\/?p=1336"},"modified":"2026-07-02T11:49:57","modified_gmt":"2026-07-02T11:49:57","slug":"gagan","status":"publish","type":"post","link":"https:\/\/materials.simplycurrentaffairs.com\/index.php\/2026\/07\/01\/gagan\/","title":{"rendered":"GAGAN"},"content":{"rendered":"\n

GAGAN<\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/mark><\/strong><\/h2>\n\n\n\n

About<\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/mark><\/strong><\/h3>\n\n\n\n
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  • GAGAN (GPS Aided GEO Augmented Navigation) <\/strong>is an Indian Satellite Based Augmentation System (SBAS)<\/strong> over the Indian Region.\u00a0\u00a0\n
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    • SBAS is an air navigation system that improves the accuracy, integrity, and availability of Global Navigation Satellite Systems (GNSS) signals (like GPS).\u00a0<\/em>\u00a0<\/li>\n<\/ul>\n<\/li>\n\n\n\n
    • GAGAN is the first such system developed for India and neighboring countries <\/strong>in the equatorial region.<\/strong>\u00a0<\/li>\n\n\n\n
    • It was developed by Indian Space Research Organisation (ISRO)<\/strong> and Airports Authority of India (AAI)<\/strong>.\u00a0<\/li>\n\n\n\n
    • Fully operationalized in 2015,<\/strong> the main objectives<\/strong> of GAGAN are:-\u00a0\n
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      • To provide satellite-based navigation services<\/strong> with the accuracy and integrity required for civil aviation applications;<\/strong><\/mark>\u00a0<\/li>\n\n\n\n
      • To provide better Air Traffic Management<\/strong> over Indian Airspace.<\/mark><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n

        Working<\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/mark><\/strong><\/h3>\n\n\n\n
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        • GAGAN works by detecting GPS signal errors<\/strong> through ground stations<\/strong> and transmitting corrected navigation signals via geostationary satellites<\/strong> to provide more accurate positioning to aircraft.<\/strong>\u00a0<\/li>\n\n\n\n
        • It operates through geostationary satellites<\/strong> such as GSAT-8, GSAT-10 to broadcast corrected navigation signals.<\/strong><\/li>\n\n\n\n
        • <\/li>\n\n\n\n
        • The system is interoperable with other international SBAS systems<\/strong> like US-Wide Area Augmentation System (WAAS), European Geostationary Navigation Overlay Service (EGNOS),<\/strong> and Japanese MTSAT Satellite Augmentation System (MSAS),<\/strong> etc., and provides seamless navigation across regional boundaries.<\/li>\n<\/ul>\n\n\n\n

          Applications of GAGAN<\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/mark><\/strong><\/h3>\n\n\n\n
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          • Although GAGAN was primarily developed<\/strong> to enhance aviation navigation <\/strong>and enable precise aircraft landing<\/strong>, its high-accuracy positioning services support several other sectors<\/strong> as well.<\/mark>\u00a0<\/li>\n\n\n\n
          • These include safer maritime navigation<\/strong>, intelligent<\/strong> transport systems<\/strong> and vehicle tracking<\/strong>, accurate<\/strong> land<\/strong> surveying and mapping for infrastructure planning<\/strong>, and disaster management activities<\/strong> such as search-and-rescue operations.<\/li>\n<\/ul>\n\n\n\n
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            Global Navigation Satellite System:<\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/h4>\n\n\n\n
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            • GNSS includes global systems<\/strong> such as Global Positioning System (GPS) \u2013 United States<\/strong>, GLONASS \u2013 Russia<\/strong>, Galileo \u2013 European Union<\/strong>, and BeiDou \u2013 China.<\/strong><\/li>\n<\/ul>\n\n\n\n

              Geostationary Earth Orbit (GEO):<\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/h4>\n\n\n\n
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              • In GEO, satellites orbit the Earth at the same speed as its rotation<\/strong> and appear fixed<\/strong> over one location, making them ideal for<\/strong> communication and navigation services.<\/strong>\u00a0<\/li>\n\n\n\n
              • It is located about 36,000 km above the Earth.<\/strong><\/li>\n<\/ul>\n\n\n\n
                \"\"<\/figure>\n<\/div><\/div>\n\n\n\n

                Why in News?<\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/mark><\/strong><\/h3>\n\n\n\n
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                • India has completed its first-ever GAGAN-based satellite-guided landing <\/strong>of a commercial aircraft.<\/strong>\u00a0\n
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                  • The milestone is significant because it showcases an alternative to the conventional Instrument Landing System (ILS),<\/strong> the precision landing aid installed at many major airports but absent at several smaller and secondary airports due to its high installation and maintenance costs.\u00a0\u00a0<\/li>\n\n\n\n
                  • By enabling precision approaches through satellite guidance<\/strong>, the technology is expected to improve operational safety<\/strong>, especially at airports without ILS infrastructure.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

                    GAGAN About Working Applications of GAGAN Global Navigation Satellite System: Geostationary Earth Orbit (GEO): Why in News?<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15],"tags":[],"class_list":["post-1336","post","type-post","status-publish","format-standard","hentry","category-science-technology"],"_links":{"self":[{"href":"https:\/\/materials.simplycurrentaffairs.com\/index.php\/wp-json\/wp\/v2\/posts\/1336","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materials.simplycurrentaffairs.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materials.simplycurrentaffairs.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materials.simplycurrentaffairs.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/materials.simplycurrentaffairs.com\/index.php\/wp-json\/wp\/v2\/comments?post=1336"}],"version-history":[{"count":1,"href":"https:\/\/materials.simplycurrentaffairs.com\/index.php\/wp-json\/wp\/v2\/posts\/1336\/revisions"}],"predecessor-version":[{"id":1338,"href":"https:\/\/materials.simplycurrentaffairs.com\/index.php\/wp-json\/wp\/v2\/posts\/1336\/revisions\/1338"}],"wp:attachment":[{"href":"https:\/\/materials.simplycurrentaffairs.com\/index.php\/wp-json\/wp\/v2\/media?parent=1336"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materials.simplycurrentaffairs.com\/index.php\/wp-json\/wp\/v2\/categories?post=1336"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materials.simplycurrentaffairs.com\/index.php\/wp-json\/wp\/v2\/tags?post=1336"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}