The Subcommittee noted that India was currently implementing two paths in its satellite navigation programme : the GPS-aided GEO-augmented Navigation System ( GAGAN ) , a satellite-based augmentation system ; and the Indian Regional Navigation Satellite System ( IRNSS ) , an independent regional system . It was noted that GAGAN had been established to provide increased position accuracy for civil aviation applications and better air traffic management , and that the availability of GAGAN signal-in-space would bridge a major part of the gap between the coverage areas of the European Geostationary Navigation Overlay Service ( EGNOS ) and Japan 's Multi-functional Transport Satellite ( MTSAT ) Satellite-based Augmentation System ( MSAS ) , thereby offering seamless navigation coverage to the aviation industry .