GAGAN system satellite in position: report

The satellite that will operate the GPS-Aided Geo Augmented Navigation (GAGAN) system providing navigation services over the Indian Ocean and the Indian airspace has been positioned.
“We are now going through the certification stage of the Satellite-Based Augmentation System (SBAS) and we will have certification of the system by June 2013,” Airports Authority of India (AAI) chairman VP Agarwal said at a recent workshop on aviation safety.
GAGAN´s certification process is being carried out with the Indian CAA, the AAI and the Indian Space Research Organisation (ISRO) developing it.
Once operational, GAGAN will provide augmented information for satellite navigation to aircraft flying over Indian airspace and routes over high seas with high level of accuracy, integrity and continuity during the entire flight operations – from take-off to landing, they said.
The GAGAN transmitter is to be integrated with the Geosynchronous Satellite Launch Vehicle (GSLV) to provide an SBAS over Indian airspace.
The project is currently in the final operational phase and is scheduled to be completed by June 2013.
The Wide Area Augmentation System codes for radio frequencies were obtained from the US Air Force and US Department of Defence in November 2001 and March 2005. US defence contractor Raytheon, which is implementing the Auto Track-III system at the IGI airport, is also involved.
The system would use eight reference stations located in Delhi, Guwahati, Kolkata, Ahmedabad, Thiruvananthapuram, Bangalore, Jammu and Port Blair, and a control centre at Bangalore to provide navigation and air traffic management over the entire Indian airspace and Indian Ocean area from Southeast Asia to Africa.
The Flight Management System based on GAGAN will help operators save time and money by managing climb, descent and engine performance profiles of aircraft.
It will also help improve airport and airspace access in all-weather conditions and the ability to meet environmental and obstacle clearance constraints.
GAGAN will also enhance reliability and reduce delays by defining more precise terminal area procedures that feature parallel routes and environmentally optimised airspace corridors.
After its final operational phase completion, the estimated cost of GAGAN will be over Rs780 crore.
It will be compatible with other SBAS like WAAS of the US, the European Geostationary Navigation Overlay Service and the Multi-functional Satellite Augmentation System of Japan, providing seamless air navigation service across regional boundaries.

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