{"id":87711,"date":"2026-10-30T18:11:00","date_gmt":"2026-10-30T12:41:00","guid":{"rendered":"https:\/\/www.nextias.com\/ca\/?p=87711"},"modified":"2026-10-30T18:11:58","modified_gmt":"2026-10-30T12:41:58","slug":"nvs-03-navic-satellite-navigation-system","status":"publish","type":"post","link":"https:\/\/www.nextias.com\/ca\/current-affairs\/30-10-2026\/nvs-03-navic-satellite-navigation-system","title":{"rendered":"NVS-03 Mission Strengthening India\u2019s Indigenous Navigation System"},"content":{"rendered":"\n<p><strong>Syllabus: GS3\/ Science and Technology<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Context<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>In order to restore the functioning of India\u2019s indigenous satellite navigation system (NavIC), ISRO is launching <strong>NVS-03 satellite<\/strong>.\u00a0<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Navigation with Indian Constellation (NavIC)<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Established by <strong>Indian Space Research Organisation (ISRO), NavIC is <\/strong>India\u2019s <strong>autonomous regional navigation satellite system<\/strong>, designed to fulfill both civilian and military navigational needs. It was launched in<strong> 2013.<\/strong><\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img data-dominant-color=\"445c64\" data-has-transparency=\"false\" loading=\"lazy\" decoding=\"async\" width=\"598\" height=\"469\" src=\"https:\/\/wp-images.nextias.com\/cdn-cgi\/image\/format=auto\/ca\/uploads\/2026\/10\/image-12.webp\" alt=\"NavIC\" class=\"not-transparent wp-image-87712\" style=\"--dominant-color: #445c64; aspect-ratio:1.275104951022856;width:460px;height:auto\" srcset=\"https:\/\/wp-images.nextias.com\/cdn-cgi\/image\/format=auto\/ca\/uploads\/2026\/10\/image-12.webp 598w, https:\/\/wp-images.nextias.com\/cdn-cgi\/image\/format=auto\/ca\/uploads\/2026\/10\/image-12-300x235.webp 300w\" sizes=\"auto, (max-width: 598px) 100vw, 598px\" \/><\/figure>\n<\/div>\n\n\n<p><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>NavIC was erstwhile known as the <strong>Indian Regional Navigation Satellite System (IRNSS).<\/strong><\/li>\n\n\n\n<li><strong>It provides precise Position, Velocity, and Timing (PVT) services<\/strong> within India and extends up to <strong>1,500 km<\/strong> beyond the country&#8217;s borders, forming its primary service area.\n<ul class=\"wp-block-list\">\n<li>Its development began following the <strong>1999 Kargil War,<\/strong> when India reportedly faced restrictions on access to GPS information from the United States<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>NavIC is designed with a constellation of <strong>7 satellites<\/strong> and a network of ground stations operating 24 x 7.\n<ul class=\"wp-block-list\">\n<li><strong>Three satellites <\/strong>of the constellation are placed in<strong> geostationary orbit<\/strong> and <strong>four satellites<\/strong> are placed in <strong>inclined geosynchronous orbit.<\/strong><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>NavIC offers two services:<\/strong><strong>Standard Position Service (SPS)<\/strong> for <strong>civilian users<\/strong> and <strong>Restricted Service (RS)<\/strong> for <strong>strategic users.\u00a0<\/strong>\n<ul class=\"wp-block-list\">\n<li>It provides location accuracy better than 20 meters and timing accuracy better than 40 nanoseconds across the core service area.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Navigation frequencies:<\/strong> The first-generation satellites use<strong> L5 and S-band <\/strong>frequencies.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>NVS Series<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>These are<strong> five second-generation NavIC satellites<\/strong> \u2014 <strong>NVS-01 to NVS-05 <\/strong>and are <strong>planned to enhance the existing constellation.\u00a0<\/strong>\n<ul class=\"wp-block-list\">\n<li>These satellites incorporate <strong>L1 band communication<\/strong>, which <strong>broadens NavIC&#8217;s compatibility and usability for diverse applications.\u00a0<\/strong><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>NVS-01,<\/strong> the first of the second-generation satellites, was launched in <strong>2023.\u00a0<\/strong>\n<ul class=\"wp-block-list\">\n<li>For the first time, an indigenous <strong>atomic clock was flown in NVS-01.<\/strong><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>NVS-02 was launched in January 2025.<\/strong><\/li>\n\n\n\n<li>The second-generation NVS satellites carry at least one <strong>indigenously developed rubidium atomic clock.\u00a0<\/strong>\n<ul class=\"wp-block-list\">\n<li>Developed by<strong> ISRO\u2019s Space Applications Centre<\/strong>, they are intended to replace the imported rubidium clocks that were used in the first generation of IRNSS satellites.\u00a0<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"wp-block-group has-background\" style=\"background-color:#ebecf0\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<h3 class=\"wp-block-heading\"><strong>About Atomic Clock<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>An Atomic Clock is a <strong>highly precise time-keeping device<\/strong> that measures time based on the natural vibration frequency of atoms, usually cesium or rubidium atoms.<\/li>\n\n\n\n<li>It is considered the <strong>most accurate time-keeping technology<\/strong>, capable of maintaining accuracy to nanoseconds (billionths of a second).<\/li>\n\n\n\n<li><strong>Working Principle:\u00a0<\/strong>\n<ul class=\"wp-block-list\">\n<li>Atoms vibrate at <strong>extremely stable and predictable frequencies<\/strong> when they <strong>change energy states.<\/strong><\/li>\n\n\n\n<li>The atomic clock measures this frequency and converts it into standard time signals.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Why is NavIC currently not functioning as intended?<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Failure of Atomic Clocks: <\/strong>Several first-generation satellites experienced failures of their onboard clocks, reducing the number of satellites available for positioning services.\n<ul class=\"wp-block-list\">\n<li>In March 2026, the last functioning atomic clock aboard <strong>IRNSS-1F<\/strong> also stopped working after the satellite completed its designed mission life of 10 years.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Failure of NVS-02:<\/strong> NVS-02 was successfully placed in<strong> Geosynchronous Transfer Orbit (GTO)<\/strong>, but a technical malfunction prevented its propulsion system from completing the required orbit-raising manoeuvre.<\/li>\n\n\n\n<li><strong>Insufficient Operational Satellites:<\/strong> As of July 2026, only <strong>three satellites (IRNSS-1B, IRNSS-1I and NVS-01) <\/strong>were providing Positioning, Navigation and Timing (PNT) services.\n<ul class=\"wp-block-list\">\n<li><strong>At least four operational satellites<\/strong> are required for basic standalone positioning services. Consequently, NavIC&#8217;s standalone positioning capability is currently unavailable, although its timing service remains functional.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>How does NVS-03 strengthen India&#8217;s navigation capabilities?<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Restoration of Positioning Services:<\/strong> Its successful commissioning would increase the number of operational satellites to the minimum threshold of four required for basic standalone positioning services.<\/li>\n\n\n\n<li><strong>Improved Compatibility: <\/strong>The L1 frequency will facilitate the adoption of NavIC in consumer <strong>electronic devices.<\/strong><\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"wp-block-group has-background\" style=\"background-color:#fff2cc\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<h3 class=\"wp-block-heading\"><strong>Other Satellite Navigation Systems<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>GPS:<\/strong> Developed and operated by the United States, it uses a constellation of satellites primarily in <strong>Medium Earth Orbit (MEO).<\/strong><\/li>\n\n\n\n<li><strong>GLONASS:<\/strong> Russia&#8217;s global navigation satellite system.<\/li>\n\n\n\n<li><strong>Galileo: <\/strong>The European Union&#8217;s independent global navigation system.<\/li>\n\n\n\n<li><strong>BeiDou:<\/strong> China&#8217;s global navigation system, using a combination of Medium Earth Orbit, Geostationary Orbit and Geosynchronous Orbit satellites.<\/li>\n\n\n\n<li><strong>QZSS: <\/strong>Japan&#8217;s regional satellite navigation system designed to complement GPS over Japan and the Asia-Oceania region.<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n<p><\/p>\n\n\n\n<p><strong>Source: <\/strong><a href=\"https:\/\/www.thehindu.com\/sci-tech\/science\/why-is-isros-nvs-03-satellite-launch-crucial-explained\/article71643798.ece\" target=\"_blank\" rel=\"noopener\"><strong>TH<\/strong><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p><strong> Context <\/strong><\/p>\n<li class=\"ms-5\"> In order to restore the functioning of India\u2019s indigenous satellite navigation system (NavIC), ISRO is launching NVS-03 satellite.\u00a0 <\/li>\n<p><\/p>\n<p><strong> Navigation with Indian Constellation (NavIC) <\/strong><\/p>\n<li class=\"ms-5\"> Established by Indian Space Research Organisation (ISRO), NavIC is India\u2019s autonomous regional navigation satellite system, designed to fulfill both civilian and military navigational needs. It was launched in 2013. <\/li>\n<p><a href=\" https:\/\/www.nextias.com\/ca\/current-affairs\/30-10-2026\/nvs-03-navic-satellite-navigation-system \" class=\"btn btn-primary btn-sm float-end\">Read More<\/a><\/p>\n","protected":false},"author":15,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[21],"tags":[],"class_list":["post-87711","post","type-post","status-publish","format-standard","hentry","category-current-affairs"],"acf":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts\/87711","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/users\/15"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/comments?post=87711"}],"version-history":[{"count":2,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts\/87711\/revisions"}],"predecessor-version":[{"id":87714,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts\/87711\/revisions\/87714"}],"wp:attachment":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/media?parent=87711"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/categories?post=87711"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/tags?post=87711"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}