Source: News Bharati English10 Mar 2016 16:57:58

Sriharikotta, March 10: Indian Space organization launched 6th navigation satellite IRNSS-1F at 4.01 PM on board trusted workhorse PSLV C32. After 54 hour countdown, Mission Readiness Review Committee and Launch Authorisation Board gave green signal to launch the satellite. 

Polar Satellite Launch Vehicle, in its thirty fourth flight (PSLV-C32), launched IRNSS-1F, the sixth satellite of the Indian Regional Navigational Satellite System (IRNSS). As in the previous five launches of IRNSS satellites, PSLV-C32 will use 'XL' version of PSLV. This is the 12th time 'XL' configuration is being flown. 
Prime Minister Narendra Modi congratulated the whole team of scientists, “Successful launch of IRNSS-1F is an accomplishment we all take immense pride in. I salute the hard work of our scientists & ISRO”, he tweeted.

“While four satellites would be sufficient to start operations of the IRNSS system, the remaining three would make it more accurate and efficient”, an ISRO official Jay Kumar said. Embeded Object

"With the launch of four satellites, we were able to provide navigation for 18 hours. But after fifth launch we increased the capacity to 24 hours with an accuracy of 20 metres. The sixth IRNSS-1F and seventh launch (IRNSS-1G) will be accurate and more efficient," an ISRO official said.

It is part of the seven satellite regional navigation system to be established by India to help terrestrial, aerial and maritime navigation. It also helps in vehicle tracking and fleet management, disaster management and mapping.

Indian Space Research Organisation to provide independent regional navigation satellite system on par with GPS, had launched five navigation satellites under the Indian Regional Navigation Satellite System (IRNSS).

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. ISRO scientists plan to put all seven navigation satellites into orbit by March 2016. The last in the series is expected to be launched by March end.

For the IRNSS-1F launch, scientists have used the "XL" variant used in previous launches of IRNSS satellites, given its capacity to carry load. Similar occasions where rocket with XL configuration were used were during launch of Chandrayaan-1, Mars Orbiter Mission, ASTROSAT besides the five IRNSS satellites.  

Along with the navigation payload and ranging payload, the satellite also carries a "highly accurate Rubidium atomic clock" with it. The payload will transmit navigation service signals to the users. The 44.4 metre tall IRNSS-1F has a liftoff mass of 1,425 kg and would be launched in sub-Geosynchronous Transfer Orbit (sub GTO). It has a 12 year mission life.