Q17.Why is the Indian Regional Navigational Satellite System (IRNSS) needed? How does it help in navigation?

The Indian Regional Navigational Satellite System (IRNSS), officially known as NavIC (Navigation with Indian Constellation), is an independent regional navigation satellite system developed by the Indian Space Research Organisation (ISRO).

Need for IRNSS (NavIC)

India's need for NavIC stems primarily from strategic autonomy. It reduces critical dependence on foreign global navigation systems like the US GPS, ensuring uninterrupted access to vital positioning services, especially during times of conflict or restricted access.

How IRNSS Aids in Navigation

NavIC provides accurate positioning, navigation, and timing (PNT) services over India and a region extending 1500 km around its boundary. It offers two distinct services:

• Standard Positioning Service (SPS) for civilian users.
• Restricted Service (RS) for authorized users, including defense and security agencies.

Its applications are diverse, aiding in terrestrial, aerial, and marine navigation, disaster management, vehicle tracking, fleet management, and precise timing for various sectors.

Ultimately, NavIC enhances national security, fosters economic development, and signifies India's self-reliance in critical satellite technology, bolstering its strategic capabilities.