Navigation Satellites
Satellites navigation services to meet the emerging demands of the Civil Aviation requirements and to meet the user requirements of the positioning, navigation and timing based on the independent satellite navigation system.
Satellite Navigation is based on a global network of satellites that transmit radio signals from medium earth orbit.
Satellite Navigation with the 31 Global Positioning System (GPS) satellites developed and operated by the United States.
While GPS is the most prevalent GNSS (Global Navigation Satellite System). GNSS can also refer to augmentation systems, but there are too many international augmentations to list below:
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Indian Satellite Navigation
ISRO is working jointly with Airport Authority of India (AAI) in establishing the GPS Aided Geo Augmented Navigation (GAGAN) system. To meet the user requirements of the positioning, navigation and timing services based on the indigenous system, ISRO is establishing a regional satellite navigation system called Indian Regional Navigation Satellite System (IRNSS).
GPS Aided GEO Augmented Navigation (GAGAN):
GAGAN is a Satellite Based Augmentation System implemented jointly with Airport Authority of India (AAI).
Indian Regional Navigation Satellite System (IRNSS) : NavIC
IRNSS is an independent Indian Satellite based positioning system for critical National applications.