isro

INSAT or the Indian National Satellite System is a series of multipurpose Geo-stationary satellites launched by ISRO to satisfy the telecommunications, broadcasting, meteorology, and search and rescue needs of India. Commissioned in 1983, INSAT is the largest domestic communication system in the Asia Pacific Region. The satellite will be monitored and controlled by Master Control Facilities that exist in Hassan and Bhopal.

SARAL mission results from the common interest of both CNES and ISRO in studying ocean from space using altimetry system and in promoting maximum use of the ARGOS Data Collecting System. Radar altimetry by satellite is a technique used in oceanography to measure, globally over the oceans, the sea level needed to understand ocean circulation and its variability.

Oceansat-2 satellite mainframe systems derive their heritage from previous IRS missions. Oceansat-2 was launched by PSLV-C14 from Satish Dhawan Space Centre, Sriharikota on Sept. 23, 2009.

Metsat is an exclusive meteorological satellite of ISRO in geo-synchronous orbit. This satellite is developed out of a small I-1000 bus made of carbon fibre re-enforced plastic light weight structure, a uni power bus employing an 18AH Ni-Cd battery and a single GaAs/Ge solar panel generating 640 watts of power. Metsat uses a 3-axis stabilized momentum biased attitude control system with suitable linearly controlled magnetic torquers for solar radiation pressure compensation.