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•India's biggest and most powerful communication satellite GSAT-11 has been successfully launched into orbit.
•Arianespace confirmed a successful launch after an on-target separation of the GSAT 11 and GEO-Kompsat 2A satellites for India and South Korea.
•In 2012, the Department of Space gave Indian Space Research Organisation’s plans a green light to build India's heaviest-ever communications satellite — the GSAT-11. In the six years since, GSAT-11 grew from being a 4.5-ton sketch to a 5.8-ton marvel with solar panels 4-metres long (almost the size of a small room).
Arianespace released GSAT-11 into the Earth's geo-transfer orbit (GTO) in a 33-minute flight on 5 December.
Why isn’t GSAT-11 being launched in India?
•GSAT-11 being ISRO’s heaviest satellite weighing close to 5.8 tons, the agency doesn’t currently have a rocket capable of lifting the satellite to orbit in one piece. The GSLV Mk-III can carry a maximum of 4 tons in satellites as of today.
•Instead, the French Arianespace’s Ariane-5 rocket — a world reference for reliable, heavy-weight launchers — with a carrying capacity of 9.1 tons, was chosen as ISRO’s hired hand to launch GSAT-11.
What will ISRO's GSAT-11 do?
•The Rs 1,174-crore GSAT-11 satellite is designed to boost the reach, speeds and capacity in India's commercial telecom sector. The satellite will help meet the country’s growing mobile and internet usage in households, businesses and public organizations.
•GSAT-11 is expected to bring far greater speeds (16 Gbps) to meet the growing data demands of Indian telecom subscribers. It is also expected to bridge the communication gap between the country's urban and rural population.
•Under Digital India's BharatNet project, GSAT-11 will boost access to voice and video streaming
How will GSAT-11 work?
•GSAT-11 will carry a next-generation I-6000 bus (communication satellite hub) to provide services in two widely-used wavelengths for telecommunications:
–the Ku- and Ka-bands.
–Ku- and Ka-bands are different frequencies of microwaves in the electromagnetic spectrum.
•GSAT-11 has
–32 Ku-band transponders and
–8 Ka-band hubs on board,
•It makes GSAT-11 three to six times more powerful than any of ISRO's (and India's) satellite as of today.
•GSAT-11 will bring bandwidths of 14 Gigabit/s in voice and video broadband services anywhere in the Indian mainland or islands over its 15-year lifespan. It will use 'spot beams' to cover the expansive area.
•Four terrestrial gateways or 'hubs' located in Delhi, Ahmedabad, Bengaluru and Ranchi, will connect the satellite to users.
•Each of these hubs is also connected to each other through an optical fibre network to ensure the connectivity is seamless.
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