|Names||Radar Imaging Satellite-2|
|Mission type||Radar imaging|
(Reconnaissance and disaster management)
|Operator||Indian Air Force|
|COSPAR ID||2009-019A |
|Mission duration||5 years (planned)|
11 years, 9 months, 6 days (elapsed)
|Launch mass||300 kg (660 lb)|
|Start of mission|
|Launch date||20 April 2009, 01:15 UTC|
|Launch site||Satish Dhawan, SLP|
|End of mission|
|Last contact||2020 (planned)|
|Reference system||Geocentric orbit|
|Altitude||440 km (270 mi)|
RISAT-2, or Radar Imaging Satellite-2 was an Indian radar reconnaissance satellite that was part of India's RISAT programme. It was built by Indian Space Research Organisation (ISRO) and successfully launched aboard a PSLV-CA rocket at 01:15 UTC on 20 April 2009 from the Second Launch Pad at the Satish Dhawan Space Centre.
RISAT-2's main sensor was an X-band synthetic-aperture radar (SAR) from Israel Aerospace Industries (IAI). It is designed to monitor India's borders and as part of anti-infiltration and anti-terrorist operations. The satellite has a mass of 300 kg (660 lb).
RISAT-2 was built at an accelerated pace following the 2008 Mumbai attacks, due to Indian army but however due to delay with the indigenously developed C band for RISAT-1. It is India's first dedicated reconnaissance satellite.
The X-band SAR used by RISAT-2 was obtained from Israel in return for launch services for the Israeli TecSAR satellite. The SAR sensor enables RISAT-2 to return images at any time of day and in all weather conditions.
RISAT-2 was India's first satellite with a synthetic aperture radar. It possess day-night as well as all-weather monitoring capability. Potential applications include tracking hostile ships at sea that are deemed a military threat to India.
Though ISRO sought to underplay the satellite's defence applications in its announcements, a substantial number of articles concerning RISAT-2 in the Indian media continue to refer to it as a "spy satellite". This is also supported by the fact that its Israeli sensor is clearly pronounced a military grade sensor by its manufacturer IAI.
ISRO scientists spent tense hours on 19 April 2009 prior to launch as one of the umbilical cords holding the PSLV-CA rocket to the launch pad fell off, damaging nearly six connectors.
RISAT-2 was used to search for and eventually locate wreckage of the helicopter crash that claimed the life of Y. S. Rajasekhara Reddy, chief minister of the state of Andhra Pradesh, as well as the lives of his fellow passengers, while traveling over dense jungles in southern India on 2 September 2009.