 Render of RISAT-1 satellite | |
| Names | Radar Imaging Satellite-1 |
|---|---|
| Mission type | Earth observation Radar imaging satellite |
| Operator | ISRO |
| COSPAR ID | 2012-017A |
| SATCAT no. | 38248 |
| Website | https://www.isro.gov.in/ |
| Mission duration | 5 years (planned) 4 years (achieved) |
| Spacecraft properties | |
| Bus | RISAT |
| Manufacturer | Indian Space Research Organisation |
| Launch mass | 1,858 kg (4,096 lb) [1] |
| Power | 2.2 kW |
| Start of mission | |
| Launch date | 26 April 2012, 00:17 UTC |
| Rocket | Polar Satellite Launch Vehicle-XL, PSLV-C19 |
| Launch site | Satish Dhawan Space Centre, First Launch Pad (FLP) |
| Contractor | Indian Space Research Organisation |
| Entered service | 19 October 2012 [2] |
| End of mission | |
| Deactivated | 31 March 2017 [3][4] |
| Last contact | 30 September 2016 [2] |
| Orbital parameters | |
| Reference system | Geocentric orbit |
| Regime | Sun-synchronous orbit |
| Perigee altitude | 539 km (335 mi) |
| Apogee altitude | 543 km (337 mi) |
| Inclination | 97.55° |
| Period | 95.49 minutes |
| Mean motion | 14 |
| Instruments | |
| Synthetic-aperture radar (C-band) (SAR-C) | |
Radar Imaging Satellite 1 or RISAT-1, was an Indian remote sensing satellite built and operated by the Indian Space Research Organisation (ISRO). The second RISAT satellite to be launched, it used a C-band 5.35 GHz synthetic-aperture radar (SAR) for Earth observation.[5]
The launch of RISAT-1 came several years after that of RISAT-2, which carried an Israeli-built X-band radar. The RISAT-2 mission was prioritised over RISAT-1 following the 2008 Mumbai attacks, resulting in RISAT-1 being delayed by several years.[6][7][8]
- ^ "RISAT-1 satellite launch a "grand success"". The Hindu. 26 April 2012.
- ^ a b "RISAT-1 (Radar Imaging Satellite-1) - Status Mission". ESA Earth Observation Portal. 9 May 2021. Retrieved 10 May 2021.
- ^ Cite error: The named reference
DCwas invoked but never defined (see the help page). - ^ Cite error: The named reference
LS_replywas invoked but never defined (see the help page). - ^ Raj, N. Gopal (25 April 2012). "RISAT-1's radar can see through clouds and work in darkness". The Hindu. Chennai, India.
- ^ Laxman, Srinivas (26 April 2012). "ISRO Launches India's First Radar Imaging Satellite, RISAT-1". Asian Scientist. Retrieved 26 April 2012.
- ^ "India to Launch RISAT-2". ASM. Archived from the original on 12 September 2010. Retrieved 25 March 2009.
- ^ "ISRO's New Satellite Could See Through Even Cloudy Sky". Indo Daily. 7 November 2008. Archived from the original on 20 May 2011. Retrieved 21 March 2009.