India gets its own GPS with the successful launch of IRNSS-1G

India gets its own GPSIndia successfully put into orbit the IRNSS-1G, completing its system in the sky. The IRNSS-1G is the seventh and final navigation satellite of the Indian Regional Navigational Satellite System.

The Indian Regional Navigational Satellite System is similar to the GPS of the U.S., Glonass of Russia, Galileo of Europe, and China’s Beidou.

The PSLV rocket was launched at 12:50 PM, on Thursday afternoon. Scientists were continuously looking at their computer screens to watch the rocket escaping the earth’s gravitational pull. Just over 20 minutes into the flight, the PSLV rocket ejected its sole passenger IRNSS-1F at an altitude of 488.9 km and then the satellite’s solar panels were deployed.

The control of the satellite was under the Mission Control Facility at Hassan in Karnataka. It will manage the orbit raising operations of the satellite firing the on board motors till it is placed in its slotted orbit. Once the satellite is declared operational, India will join the select group of nations owing such system.

According to Indian space agency the applications of IRNSS are: terrestrial, aerial and marine navigation, vehicle tracking and fleet management, terrestrial navigation for hikers and travelers, disaster management, integration with mobile phones, mapping and geodetic data capture and visual and voice navigation for drivers. The IRNSS is not only be used in civilian applications but also for defense purposes.

Some specific facts of the system:

The satellite is having two payloads for navigation and ranging.

It will have a life span of 12 years.

The navigation payloads will transmit signals to the users on the L5-band and S-band.

It consists of a C-band transponder (automatic receivers and transmitters of radio signals) which facilitates accurate determination of the range of the satellite.

The system unique as it comprises of 9 satellites in orbit and 2 on the ground as stand by, while other systems in the world have minimum 20 satellites.

The system is regional in nature, while all other systems are global.

It will provide accurate position information service to users across the country and the region, extending up to an area of 1,500 km.

Each satellite costs Rs. 150 crore and the PSLV-XL version rocket costs Rs. 130 crore. Thus it totally costs about Rs. 910 crore.

According to ISRO officials the total project costs around Rs. 1420 crore.

The system will provide two types of service. First is Standard Positioning Service (for all users) and second is Restricted Service (for authorized users).


In the views of A.S. Ganeshan there will be more development of application software that would be useful for different segments, once the IRNSS is ready. The Indian government should mandate the use of indigenous satellite navigation systems by various government agencies and the emergency service providers so that the signal receiver makers are enthused to get into accelerated production mode. Once the mandatory usage is there, more software applications could be developed, thereby widening the usage.


Check out the dates of the 7-series navigation Satellites

The first satellite IRNSS-1A was launched in July 2013, the second IRNSS-1B in April 2014, the third on October 2014, the fourth in March 2015, and the fifth, sixth and seventh on January 20, March 10, and April 28 2016. India will become self-dependent if the IRNSS passes all these tests and India will be able to provide better positional accuracy.


Stay tuned with us for more General Knowledge updates. For updates refer GK Eduwrap on regular basis.

You can read more useful articles at Out of the Box section.

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