With the launch of IRNSS-1G satellite, ISRO’s Indian Regional Navigation Spacecraft System (IRNSS) which is India’s own version of the Global Positioning System (GPS), is in place! The flawless launch of IRNSS-1G, the seventh satellite in the navigation system, marks a big milestone for the Indian Space Research Organisation.
When the IRNSS-1G becomes operational in about a month’s time, the system would offer services like terrestrial and marine navigation, disaster management, vehicle tracking and fleet management, navigation aide for hikers and travellers, visual and voice navigation for drivers.
Congratulating ISRO’s scientists for the gigantic scientific leap, PM Narendra Modi termed the system ‘Navic’. “The world will know it as Navic…that is navigate with Indian constellation…. The new technology will benefit our people, our fishermen. This is a great gift to people from scientists,” PM Modi said. “This is an example of Make in India, made in India and made for Indians. 125 crore Indians have got a new Navic,” Modi said.
IRNSS-1G launched from the spaceport of Sriharikota in Andhra Pradesh on Thursday. IRNSS is the Indian navigation system which envisages establishment of regional navigation system using a combination of GEO and GSO spacecraft.
The benefits from this new technology will benefit our people, our fishermen. The world will know it as Navic: PM @narendramodi
— PMO India (@PMOIndia) April 28, 2016
PM Modi said, “I would like to heartily congratulate and appreciate the scientists and teams of ISRO. Everyone is experiencing that how science can help in making life easier for the common man.” “All seven satellites were launched successfully. We are now self-reliant,” he said.
Congratulations to ISRO team on successful launch of PSLV-C33 carrying IRNSS-1G
— President of India (@RashtrapatiBhvn) April 28, 2016
The IRNSS comprises seven satellites and while four satellites would be sufficient to start operations, the remaining three would make it “more accurate and efficient”, claims ISRO.
IRNSS system is expected to provide position accuracy of better than 20 m over Indian region and an area extending about 1500 sq km around India. It consists of three Geostationary Earth Orbit (GEO) spacecraft and four spacecraft in Geosynchronous orbit inclined at 29 degrees.
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).
The total cost of all the seven satellites is said to be Rs 1,420 crore. As in the previous six launches of IRNSS satellites, PSLV-C33 will use ‘XL’ version of PSLV equipped with six strap-ons, each carrying 12 tons of propellant. The XL variant was used during the launch of Mars Orbiter Mission, Chandrayaan-1, ASTROSAT besides the six earlier IRNSS satellites.
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.