Which of the following is a satellite specifically for navigation?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → GAGAN
GAGAN (GPS Aided GEO Augmented Navigation) is India’s satellite-based augmentation system for navigation, built by ISRO and the Airports Authority of India. It corrects GPS signals over the Indian region so that aircraft can fix their position accurately enough for landing approaches.
Strictly, GAGAN is a system rather than one satellite: its signals are sent through navigation payloads on GSAT-8, GSAT-10 and GSAT-15. Among the options it is the only one made for navigation; India’s own navigation satellites form the NavIC (IRNSS) series.