IRNSS - Indian Regional Navigation Satellite System

This System is designed to provide position information in the Indian region and 1500 km around the Indian mainland.
IRNSS would provide two types of services, namely, Standard Positioning Services (SPS) - provided to all users and Restricted Services (RS)- provided to authorised users only.

Objective 

By using the IRNSS as a platform the Government of India is planning to launch its own Global Navigational Satellite Services, GINS (Global Indian Navigation Satellite) system, similar to Global Positioning System (GPS) of the the US.

Some Facts

• Country own system for location services like US GPS.
• There are 21 ground stations. ISRO navigation centre which is nerve centre is at Byalan, Bangalore.
• Backup for Byalan nerve center is at Lucknow.
• Ground center provides data recovery and processing center, units have  instruments such as atomic clocks for keeping accurate time which is essential in navigation.
• Navigation satellites provides three main data namely PNT - information on position, navigation and time.
• Ground center presently consists of 13 Indian Range and Integrity Monitoring stations (IRIMS), 1 IRNSS Navigation Center at Byalan, Bangalore, 1 Spacecraft Control Facility(SCF) with its data communication center.
• Planned one are 2 more IRIMS, 1 Network Timing Center, 1 Indian Navigation Center, 1 SCF.
• IRIMS will be spread across Gaggal(In HP near Kangra), Dehradun, Lucknow, Jodhpur, Udaipur , Bhopal, Shillong, Kolkata, Goa, Pune, Kavaratti(Capital of Lakshadweep), Mahendragiri(TN - Southern tip of western ghats) and Port Blair(HQ of Andaman and Nicobar Island) besides Bangalore and Hassan.
• SCF is in Hassan and alternative center in Bhopal.