GPS-aided GEO augmented navigation
GAGAN improves GNSS accuracy and modernizes Indian airspace management / From Wikipedia, the free encyclopedia
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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]
GEO augmented navigation system | |
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Type | Regional satellite-based augmentation system |
Developers | Indian Space Research Organisation, Airports Authority of India |
Accuracy | 1.5 m or 4 ft 11 in (horizontal), 2.5 m or 8 ft 2 in (vertical) |
Launched | 2001 |
Orbital radius | 26,600 km (approx) |
Max operational life | 15 years |
Fully operational by | 2013–14[1] |
Project cost | ₹774 crore (US$93 million) |
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The project has established fifteen Indian reference stations, three Indian navigation land uplink stations, three Indian mission control centres, 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) This will be helpful for landing aircraft in marginal weather and difficult approaches like Mangalore International and Kushok Bakula Rimpochee airports.