Isro’s IRNSS-1G navigation satellite launched from Sriharikota: Top 7 things to know about India’s own GPS

Isro’s IRNSS-1G navigation satellite launched on Thursday from the spaceport of Sriharikota in Andhra Pradesh carrying India’s seventh and last navigation satellite.

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For the first time, under the impetus of ISRO and the French Space Agency (CNES), space agencies of over 60 countries have agreed to engage their satellites, to coordinate their methods and their data to monitor human-induced greenhouse gas emissions. (PTI)

Isro’s IRNSS-1G navigation satellite launched on Thursday from the spaceport of Sriharikota in Andhra Pradesh carrying India’s seventh and last navigation satellite. India is now among the select five nations that boast of their own GPS or navigation system. IRNSS is the Indian navigation system which envisages establishment of regional navigation system using a combination of GEO and GSO spacecraft. Here are 7 things to know about India’s own GPS system:

1. Isro’s IRNSS-1G: The Indian Regional Navigation Satellite System comprising seven satellites would be able to provide navigation system with much better accuracy and targeted position. While four satellites would be sufficient to start operations of the IRNSS system, the remaining three would make it “more accurate and efficient”.

2. Isro’s IRNSS-1G: ISRO had launched the sixth navigation satellite IRNSS-1F on March 10, the other five being IRNSS-1A on July 1, 2013, IRNSS-1B (April 4, 2014), IRNSS-1C (October 16, 2014), IRNSS-1D (March 28, 2015) and IRNSS-1E (January 20, 2016).

3. Isro’s IRNSS-1G: According to ISRO officials total cost of all the seven satellites was Rs 1,420 crore.

4. Isro’s IRNSS-1G: The PSLV-C33, carrying IRNSS-1G, in its 35th flight, would be the XL variant that was used during launch of Mars Orbiter Mission, Chandrayaan-1, ASTROSAT besides the six IRNSS satellites.

5. Isro’s IRNSS-1G: The 44.4 metre tall IRNSS-1G has a lift-off mass of 1,425 kg and would be launched in sub-Geosynchronous Transfer Orbit (sub GTO). It has a 12 year mission life.

6. Isro’s IRNSS-1G: With the operationalisation of six satellites, India has demonstrated the system’s targeted position accuracy which is much better than 20 metres over 24 hours of the day.

7. Isro’s IRNSS-1G: With the launch and operationalisation of IRNSS-1G, the seventh in the constellation, the completion of IRNSS constellation will be achieved, ISRO said.

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