RISAT-2
| RISAT-2 | |
|---|---|
| Type: | Radar reconnaissance satellite |
| Country: |
 India
|
| Operator: |
 ISRO
|
| COSPAR-ID : | 2009-019A |
| Mission dates | |
| Dimensions: | 300 kg |
| Begin: | April 20, 2009, 01:15 UTC |
| Starting place: | Satish Dhawan Space Center |
| Launcher: | PSLV C-12 |
| Status: | active |
| Orbit data | |
| Rotation time : | 93 min |
| Orbit inclination : | 41.2 ° |
| Apogee height : | 445 km |
| Perigee height : | 416 km |
Risat-2 (short for Radar Imaging Satellite 2 ) is an Indian radar reconnaissance satellite , which successfully within the framework of the Indian program RISAT was started.
It was brought into sun-synchronous earth orbit on April 20, 2009 at 01:15 ( UTC ) with a Polar Satellite Launch Vehicle from the second launch platform of the Satish Dhawan Space Center . The launch vehicle carried the student-built microsatellite ANUSAT as a secondary payload . RISAT-2 was built by the Israeli company Israel Aerospace Industries on the basis of the Israeli satellite TecSAR , which was launched in 2008. The main payload of the satellite is in the X-band operating synthetic aperture radar system having a large bowl-shaped antenna, can make at any time and in any weather which photos to achieve a resolution of up to one meter. The life expectancy is given as three years.
Officially, it is supposed to serve the disaster control, the border and the surveillance of drought areas, as well as help with the planning of the urban development. According to media reports, it is also used for military reconnaissance tasks. This was requested by the Indian military after the attacks on November 26, 2008 in Mumbai , whereupon the acquisition plans were accelerated and RISAT-2 was started before RISAT-1 . ISRO denies this.
With the launch of Risat-2B on May 22, 2019, the construction of a constellation of more modern successor satellites began. Despite a planned lifespan of just five years, Risat-2 was still in operation at this point.
Web links
- ISRO: RISAT-2 ( Memento from June 12, 2010 in the Internet Archive ) (English)
- ESA: RISAT-2 (Radar Imaging Satellite-2) (English)
swell
- ↑ a b RISAT-2 (Radar Imaging Satellite-2). In: eoPortal. ESA, accessed on May 19, 2014 .
- ↑ Railway data according to RISAT-2. n2yo, May 19, 2014, accessed May 19, 2014 .
- ↑ raumfahrer.net: PSLV C-12 brings radar and small satellites into space
- ^ RIA Novosti: India sends spy satellites into space
- ↑ India launches key spy satellite . BBC News, April 20, 2009
- ↑ RISAT-2 is no spy satellite: ISRO chief. In: News April 18 , 2009, accessed on May 22, 2019 : “There is nothing like a spy satellite in our agenda; this is another series in the Earth-Observation satellite category "
- ↑ Stephen Clark: Indian rocket successfully delivers radar observation satellite to orbit. In: Spaceflight Now. May 22, 2019, accessed May 22, 2019 .