{"id":2873,"date":"2026-04-22T21:24:49","date_gmt":"2026-04-22T15:54:49","guid":{"rendered":"https:\/\/lotusarise.com\/qna\/?p=2873"},"modified":"2026-04-22T21:24:51","modified_gmt":"2026-04-22T15:54:51","slug":"gps-aided-geo-augmented-navigation-gagan-uses-a-system-of-ground-stations-to-provide-necessary-augmentation-which-of-the-following-statements-is-are-correct-in-respect-of-gagan","status":"publish","type":"post","link":"https:\/\/lotusarise.com\/qna\/upsc\/prelims\/gps-aided-geo-augmented-navigation-gagan-uses-a-system-of-ground-stations-to-provide-necessary-augmentation-which-of-the-following-statements-is-are-correct-in-respect-of-gagan","title":{"rendered":"GPS-Aided Geo Augmented Navigation (GAGAN) uses a system of ground stations to provide necessary augmentation. Which of the following statements is\/are correct in respect of GAGAN?\u00a0"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">I. It is designed to provide additional accuracy and integrity.&nbsp;&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">II. It will allow more uniform and high quality air traffic management.&nbsp;&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">III. It will provide benefits&nbsp;<strong>only in aviation<\/strong>, but not in other modes of transportation.&nbsp;&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Select the correct answer using the code given below.&nbsp;&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list mcq\">\n<li>I, II and III\u00a0\u00a0<\/li>\n\n\n\n<li>I only\u00a0\u00a0<\/li>\n\n\n\n<li>II and III only\u00a0\u00a0<\/li>\n\n\n\n<li><strong>I and II only\u00a0<\/strong>\u00a0<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Answer: (d) I and II only<\/strong><\/p>\n<\/blockquote>\n\n\n\n<h5 class=\"wp-block-heading\" id=\"gpsaided-geo-augmented-navigation-gagan\"><strong>GPS-Aided Geo Augmented Navigation (GAGAN)<\/strong><\/h5>\n\n\n\n<ul class=\"wp-block-list\">\n<li>GAGAN is the acronym for GPS Aided GEO Augmented Navigation. The GAGAN uses a\u00a0<strong>system of ground stations to provide necessary augmentations to the GPS standard positioning service(SPS) navigation signal<\/strong>. GAGAN is jointly developed by the\u00a0<strong>Indian Space Research Organisation (ISRO) and the Airports Authority of India (AAI).<\/strong><\/li>\n\n\n\n<li>GAGAN is India\u2019s\u00a0<strong>satellite-based augmentation system (SBAS).<\/strong>\u00a0The SBAS is a navigation system that builds on the Global Navigation Satellite Systems (GLONASS) and\u00a0<strong>adds to the accuracy and integrity of these navigation tools.<\/strong>\u00a0For aircraft operators,\u00a0<strong>both civilian and military<\/strong>, it means that pilots can land aircraft at smaller airports and airstrips using navigation guidance without expensive instrument-based landing systems being installed on the ground.<\/li>\n\n\n\n<li>The GAGAN is designed to provide the\u00a0<strong>additional accuracy, availability, and integrity necessary to enable users to rely on GPS<\/strong>\u00a0for all phases of flight, from en route through approach for all qualified airports within the GAGAN service volume. GAGAN also\u00a0<strong>provides the capability for increased accuracy in position reporting, allowing for more uniform and high-quality Air Traffic Management (ATM).<\/strong><\/li>\n\n\n\n<li>GAGAN\u00a0<strong>provides benefits beyond aviation to all modes of transportation, including maritime, highways, and railroads.<\/strong><\/li>\n<\/ul>\n\n\n\n<h6 class=\"wp-block-heading\" id=\"coverage-of-gagan\">Coverage of GAGAN<\/h6>\n\n\n\n<ul class=\"wp-block-list\">\n<li>GAGAN provides coverage over a\u00a0<strong>vast geographical area, extending from Africa to Australia.<\/strong><\/li>\n\n\n\n<li>The system has expansion capabilities to offer\u00a0<strong>seamless navigation services across the region.<\/strong><\/li>\n\n\n\n<li>The\u00a0<strong>coverage area includes 45 reference stations<\/strong>\u00a0for potential expansion to neighbouring countries.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lotusarise.com\/wp-content\/uploads\/2026\/04\/GAGAN-UPSC-Notes.jpg\" alt=\"\" class=\"wp-image-53549\" title=\"\"><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>I. It is designed to provide additional accuracy and integrity.&nbsp;&nbsp; II. It will allow more uniform and high quality air traffic management.&nbsp;&nbsp; III. It will provide benefits&nbsp;only in aviation, but not in other modes of transportation.&nbsp;&nbsp; Select the correct answer using the code given below.&nbsp;&nbsp; Answer: (d) I and II only GPS-Aided Geo Augmented Navigation&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[3,1],"tags":[44],"years":[63],"class_list":["post-2873","post","type-post","status-publish","format-standard","hentry","category-prelims","category-upsc","tag-science-and-tech","years-63"],"acf":[],"taxonomy_info":{"category":[{"value":3,"label":"Prelims"},{"value":1,"label":"UPSC"}],"post_tag":[{"value":44,"label":"Science and Tech"}],"years":[{"value":63,"label":"2025"}]},"featured_image_src_large":false,"author_info":{"display_name":"LotusArise","author_link":"https:\/\/lotusarise.com\/qna\/author\/team-lotusarise"},"comment_info":0,"category_info":[{"term_id":3,"name":"Prelims","slug":"prelims","term_group":0,"term_taxonomy_id":3,"taxonomy":"category","description":"","parent":1,"count":1251,"filter":"raw","cat_ID":3,"category_count":1251,"category_description":"","cat_name":"Prelims","category_nicename":"prelims","category_parent":1},{"term_id":1,"name":"UPSC","slug":"upsc","term_group":0,"term_taxonomy_id":1,"taxonomy":"category","description":"","parent":0,"count":1269,"filter":"raw","cat_ID":1,"category_count":1269,"category_description":"","cat_name":"UPSC","category_nicename":"upsc","category_parent":0}],"tag_info":[{"term_id":44,"name":"Science and Tech","slug":"science-and-tech","term_group":0,"term_taxonomy_id":44,"taxonomy":"post_tag","description":"","parent":0,"count":167,"filter":"raw"}],"_links":{"self":[{"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/posts\/2873","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/comments?post=2873"}],"version-history":[{"count":0,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/posts\/2873\/revisions"}],"wp:attachment":[{"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/media?parent=2873"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/categories?post=2873"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/tags?post=2873"},{"taxonomy":"years","embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/years?post=2873"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}