Engineering:RISAT-1A
| Names | Radar Imaging Satellite-1A Earth Observation Satellite-4 |
|---|---|
| Mission type | Imaging radar |
| Operator | ISRO |
| Website | www |
| Mission duration | 5 years (planned) |
| Spacecraft properties | |
| Spacecraft | RISAT-1A |
| Manufacturer | Indian Space Research Organisation |
| Launch mass | 1,858 kg (4,096 lb) |
| Power | 1850 watts |
| Start of mission | |
| Launch date | October-November 2021(Expected) |
| Rocket | Polar Satellite Launch Vehicle, PSLV-C52 |
| Launch site | Satish Dhawan Space Centre, First Launch Pad (FLP) |
| Contractor | Indian Space Research Organisation |
| Orbital parameters | |
| Reference system | Geocentric orbit[1] |
| Regime | Sun-synchronous orbit |
| Perigee altitude | 536 km (333 mi) |
| Apogee altitude | 536 km (333 mi) |
| Inclination | 97.84° |
| Period | 96.50 minutes |
| Instruments | |
| Synthetic Aperture Radar (X-band) (SAR-X) | |
Radar Imaging Satellite-1A, or RISAT-1A, is a planned remote sensing satellite as a follow on to RISAT-1 and with similar configuration. The satellite is being developed by Indian Space Research Organisation (ISRO) and it will be 6th in series of RISAT satellites. It will be a land based mission with primary application in terrain mapping and analysis of land, ocean and water surface for soil moisture.[2]
Satellite description
Synthetic aperture radar can be used for Earth observation irrespective of the light and weather conditions of the area being imaged.[3] The satellite will carry a C-band synthetic-aperture radar (SAR) and will have a liftoff mass of 1,858 kg (4,096 lb).[1]
Payload metrics are defined by the following parameters and areas of study:
| Category | Parameters |
|---|---|
| Land | Albedo and reflectance |
| Soil moisture | |
| Vegetation | |
| Multi-purpose imagery | |
| Ocean | Ocean topography/currents |
| Snow & Ice | Ice sheet topography |
| Snow cover, edge and depth | |
| Sea ice cover, edge and thickness |
Launch
RISAT-1A will be launched on the Polar Satellite Launch Vehicle (PSLV-C52). RISAT-1A is planned to be launched in September 2021.[4]
See also
- RISAT
- PSLV
References
- ↑ 1.0 1.1 Reddy, O.V. Raghav (3 February 2016). "Future Earth Observation Missions of ISRO, NRSC User Interaction Meet 2016". http://nrsc.gov.in/sites/all/pdf/modnrscUIM%20_Raghava%20Reddy_1.pdf.
- ↑ "CEOS Instrument: Synthetic Aperature Radiometer (RISAT)". http://ceos-sysdb.com/CEOS/db/db_instrument_low_level.php?id=790.
- ↑ Raj, N. Gopal (25 April 2012). "RISAT-1's radar can see through clouds and work in darkness". The Hindu (Chennai, India). http://www.thehindu.com/sci-tech/technology/article3350204.ece.
- ↑ "SDSC-SHAR Website". https://www.shar.gov.in/sdscshar/index.jsp.
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