GPS Aided GEO Augmented Navigation (GAGAN)
GAGAN is a Satellite Based Augmentation System (SBAS) implemented jointly with Airport Authority of India (AAI). The main objectives of GAGAN are to provide Satellite-based Navigation services with accuracy and integrity required for civil aviation applications and to provide better Air Traffic Management over Indian Airspace. The system will be interoperable with other international SBAS systems and provide seamless navigation across regional boundaries.
The first GAGAN navigation payload was flown on GSAT-8
which was launched on May 21, 2011 and the second on GSAT-10
launched on Sep 29, 2012.