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India's Sixth Navigation Satellite in Orbit
Mar 12, 2016

ISRO on 10 March successfully put into orbit India’s sixth dedicated navigation satellite, the IRNSS-1F, from Sriharikota in Andhra Pradesh. The satellite was launched on-board India’s dependable launch vehicle, the Polar Satellite Launch Vehicle (PSLV).

  • The Polar Satellite Launch Vehicle (PSLV C-32) lifted off at 4.01 p.m. with the payload.

  • The launch was revised by one minute to 4.01 p.m. for collision avoidance as per the space debris studies

  • The Independent Regional Navigation Satellite System (IRNSS) is designed to provide accurate position information service to users in India and the region extending up to 1,500 km from the border.

  • The IRNSS-1F carrying two payloads—the navigation payload and ranging payload—was put into orbit 20 minutes after take-off from the second launch pad at the Satish Dhawan Space Centre, Sriharikota.

  • The navigation payload of IRNSS-1F will transmit navigation service signals and will operate in the L5 band and S band. The ranging payload consists of a C-band transponder that facilitates accurate determination of the range of the satellites.

  • Along with the navigation payload and ranging payload, the satellite also carries a highly accurate Rubidium atomic clock with it.

  • The 44.4 metre tall satellite has a liftoff mass of 1,425 kg and was launched in sub-Geosynchronous Transfer Orbit. It has a 12 year mission life.

  • India's navigation system will cost about Rs. 1,400 crore. ISRO says the system will have an error margin of no more than 20 metres.
  • The satellite will take ISRO to the threshold of putting in place an independent regional navigation satellite system like the American Global Positioning System (GPS).
  • The five satellites already launched are IRNSS-1A on July 1, 2013, IRNSS-1B on April 4, 2014, IRNSS-1C on October 16, 2014, IRNSS-1D on March 28, 2015 and IRNSS-1E on January 20, 2016.

  • The satellites in this series continuously beam down data that can be read even by smart phones.


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