Indian national satellite system
From Glossary of Meteorology
Indian National Satellite System
(Acronym INSAT.) A series of multipurpose geostationary satellites designed to support communications, television broadcasting, and meteorological observations.
INSAT-1 (launched August 1983) was positioned at 74°E longitude, and was the first three- axis stabilized geostationary satellite. Not all satellites in the INSAT series have carried meteorological imagers.