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 by Staff Writers New Delhi (Sputnik) Aug 31, 2017
To be launched on board PSLV-C39 on Thursday at 1900hrs local time, IRNSS-1H will be a 'back-up' navigation satellite for IRNSS-1A, one of the seven satellites in the constellation, as its three rubidium atomic clocks on board had stopped functioning. The 29-hour countdown for tomorrow's launch of navigation satellite 'IRNSS-1H' to augment the existing seven satellites of the NavIC constellation began today. "The 29-hr countdown operations of the PSLV-C39/IRNSS-1H mission have started on Wednesday at 14:00 hrs IST," the Indian Space Research Organisation said. The launch is scheduled at 1900hrs from the Second Launch Pad of the Satish Dhawan Space Centre at Sriharikota in Andhra Pradesh. The Mission Readiness Review (MRR) committee and Launch Authorisation Board (LAB) had on Tuesday cleared the 29-hour countdown. PSLV-C39 will use the 'XL' version of PSLV equipped with six strap-ons, each carrying 12 tons of propellant. The spacecraft weighs over 1,400kg and was built and tested by ISRO along with a consortium of six small and medium industries. The Indian Regional Navigation Satellite System (IRNSS) is an independent regional navigation satellite system developed by India at par with US-based GPS. ISRO had launched seven satellites - IRNSS-1G on April 28, 2016, IRNSS-1F (March 10, 2016), IRNSS-1E (January 20, 2016), IRNSS-1D (March 28, 2015), IRNSS-1C (October 16, 2014), IRNSS-1B (April 4, 2014) and IRNSS-1A on July 1, 2013. According to ISRO officials, the total cost of all the seven satellites was $ 222 million. Source: Sputnik News
ISRO Develops Ship-Based Antenna System to Track Satellite LaunchesNew Delhi (Sputnik) Jul 18, 2017 The Indian Space Research Organisation (ISRO) has successfully designed and developed a ship-borne transportable antenna terminal to fulfill the telemetry tracking and command requirements for all satellites and launch vehicle missions. ISRO Telemetry, Tracking and Command Network (ISTRAC)'s 4.6-meter ship-borne antenna system has been built indigenously and consists of three-axis Antenna ... read more Related Links ISRO Rocket Science News at Space-Travel.Com
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