स्पेस-आधारित ऑग्मेंटेशन सिस्टम निम्नलिखित में से कौन सा है? A. इन्सैट B. गगन C. जीसैट D. सरल

GAGAN (GPS Aided GEO Augmented Navigation), built by ISRO and the Airports Authority of India, is India's Space-Based Augmentation System. It improves the accuracy of GPS signals for aviation. INSAT and GSAT are communication satellites, and SARAL is an oceanographic satellite.