Image taken by INSAT 2-E

Shown here is a GSLV launch vehicle, one of the main launch vehicles for INSAT satellites.

Indian National Satellite System (INSAT) 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. Active satellites of this series include INSAT-2E, INSAT-3A, INSAT-3B, INSAT-3C, INSAT-3E, KALPANA-1 (METSAT), GSAT-2, EDUSAT (GSAT-3) and INSAT-4A. INSAT satellites provide transponders (about 150) in various bands (C, S, Extended C and Ku) to serve the television and communication needs of India. Some of the satellites also have the Very High Resolution Radiometer (VHRR), CCD cameras for metrological imaging. The satellites also incorporate transponder(s) for receiving distress alert signals for search and rescue missions in the South Asian and Indian Ocean Region, as ISRO is a member of the Cospas-Sarsat programme. Image File history File links Insat_vhrr. ... Image File history File links Insat_vhrr. ... Image File history File links Gslv1. ... Image File history File links Gslv1. ... The GSLV or Geosynchronous Satellite Launch Vehicle was developed by India (Indian Space Research Organization) to launch satellites into geostationary orbit. ... It has been suggested that Indian space program be merged into this article or section. ... This article needs to be cleaned up to conform to a higher standard of quality. ... EDUSAT or GSAT-3 was launched in September 2004 by the Indian Space Research Organisation. ... In telecommunication, the term transponder (sometimes abbreviated to XPDR or TPDR) has the following meanings: An automatic device that receives, amplifies, and retransmits a signal on a different frequency (see also broadcast translator). ... A specially developed CCD used for ultraviolet imaging in a wire bonded package. ... A camera is a device used to take pictures (usually photographs), either singly or in sequence, with or without sound recording, such as with video cameras. ... Metrology is variously described as the science of measurement; the science of accuracy and precision; the history of measures; the history of measurement and other definitions. ... Cospas-Sarsat is an international satellite-based search and rescue system, established by Canada, France, the United States, and the former Soviet Union in 1979. ...

INSAT milestones

• INSAT 1 Series
  • 1A April 10, 1982
  • 1B August 30, 1983
  • 1C July 21, 1988
  • 1D June 12, 1990
• INSAT 2 Series
  • 2A July 10, 1992
  • 2B July 23, 1993
  • 2C December 7, 1995
  • 2D June 4, 1997
    • 2DT ARABSAT-1C is acquired and renamed as INSAT-2DT
  • 2E April 3, 1999
• INSAT 3 Series
  • 3A April 10, 2003
  • 3B March 22, 2000
  • 3C January 24, 2002
  • 3E September 28, 2003
• INSAT 4 Series
  • 4A December 22, 2005 (Image & details of the satellite)
  • 4B (To be launched by Ariane Space)
  • 4C (destroyed during liftoff)
  • 4D (Spare)
  • 4E
  • 4F
  • 4G