GPS-aided GEO augmented navigation

GAGAN
GPS-aided GEO augmented navigation
TypeRegional satellite-based augmentation system
DevelopersIndian Space Research Organisation (ISRO)
Airports Authority of India (AAI)
Accuracy1.5 m or 4 ft 11 in (horizontal),
2.5 m or 8 ft 2 in (vertical)
Launched2001
Orbital radius26,600 km (approx)
Max operational life15 years
Fully operational by2013–14[1]
Project cost₹774 crore (US$93 million)

The GPS-aided GEO augmented navigation (GAGAN) is an implementation of a regional satellite-based augmentation system (SBAS) by the Government of India.[2] It is a system to improve the accuracy of a GNSS receiver by providing reference signals.[3] The Airports Authority of India (AAI)'s efforts towards implementation of operational SBAS can be viewed as the first step towards introduction of modern communication, navigation and surveillance / air traffic management system over the Indian airspace.[4]

The project has established 15 Indian Reference Stations (INRES), 2 Indian Master Control Centre (INMCC) and 3 Indian Land Uplink Station (INLUS) and installation of all associated software and communication links.[5] It will be able to help pilots to navigate in the Indian airspace by an accuracy of 3 m (9.8 ft) and will be helpful for landing aircraft in marginal weather and difficult approaches like Mangalore International and Kushok Bakula Rimpochee airports.[6]

  1. ^ "Soon, safety in the sky as GPS-aided Gagan set to take off", The Times of India, 23 January 2012, archived from the original on 8 January 2014
  2. ^ Singh, Amit (12 January 2019). "Ensuring safety and reliabity through indigenous satellite navigation system GAGAN". Times of India Blog. Retrieved 7 May 2019.
  3. ^ "India Approves Gagan System". Magazine article. Asian Surveying and Mapping. 15 September 2008. Archived from the original on 19 May 2009. Retrieved 5 May 2009.
  4. ^ Singh, Arjun (28 August 2008). "GAGAN Update". mycoordinates.org. Archived from the original on 28 August 2008.
  5. ^ "GAGAN system ready for operations - The Hindu". The Hindu. 11 January 2014.
  6. ^ "GAGAN System". pib.gov.in. 10 August 2024. Retrieved 19 June 2024.