ISRO’s 101st space mission, is ready to be launched from the Kourou
launch base in French Guyana. GSAT-10, weighing 3400 kg at the lift off,
is the heaviest that ISRO has built. GSAT-10 has been integrated with
the Ariane-5 launch vehicle along with co-passenger communication
satellite ASTRA-2F awaiting the launch scheduled at 0248 hrs on
September 29, 2012 (IST).
About 31 minutes after lift off, GSAT-10 would be injected in a
Geosynchronous Transfer Orbit with a perigee of 250 km and an apogee of
about 36,000 km. From there, the satellite would be moved to
Geostationary Orbit (circular 36,000 km above equator) by using the
satellite propulsion system in a three step approach. After this, the
solar panels and antennas would be deployed. In the next few weeks, the
payload would be turned on to perform a series of extensive In-orbit
Tests. The satellite is expected to be operational by November 2012.
GSAT-10 satellite will be positioned at 83 deg East orbital location
along with INSAT-4A and GSAT-12. The nominal operational life of GSAT-10
is expected to be 15 years.
GSAT-10 satellite, carrying 30 communication transponders [12 Ku-band,
12 C-band and 6 Extended C-Band] would provide vital augmentation to
INSAT/GSAT transponder capacity. Also, it has a Navigation payload
“GAGAN” that would provide improved accuracy of GPS signals (of better
than 7 meters) to be used by the Airports Authority of India for Civil
Aviation requirements. This is the second satellite in INSAT/GSAT
constellation with GAGAN payload after GSAT-8, launched in May 2011.