GAGAN (GPS-aided GEO augmented navigation)

The GPS-aided GEO augmented navigation (GAGAN) is an execution of a regional satellite-based augmentation system (SBAS) by India Government. By giving reference signals it is used to enhance the exactness of a GNSS receiver. The GAGAN’s focus is to give a navigation framework to support aircraft in accurate arriving over the Indian airspace and in the adjoining area and applicable to safety-to-life civil operations. GAGAN is interoperable with other international SBAS frameworks.