|Mission type||Radar imaging|
|Mission duration||Planned: 5 years |
Elapsed: 1 year, 4 months, 2 days
|Launch mass||628 kg |
|Start of mission|
|Launch date||11 December 2019, 09:55 UTC|
|Launch site||Satish Dhawan Space Centre, First Launch Pad|
|Contractor||Indian Space Research Organisation (ISRO)|
|Reference system||Geocentric orbit|
|Regime||Low Earth orbit|
|Perigee altitude||557 km|
|Apogee altitude||557 km|
RISAT-2BR1 is a synthetic-aperture radar (SAR) imaging satellite for reconnaissance built by Indian Space Research Organisation (ISRO). It is part of India's RISAT series of SAR imaging spacecraft and fourth satellite in the series. RISAT-2BR1 was launched on 11 December 2019 at 09:55 UTC aboard PSLV-C48 from First Launch Pad of Satish Dhawan Space Centre. It was the 50th launch of Polar Satellite Launch Vehicle and 75th launch from Satish Dhawan Space Centre.
The RISAT-2BR1 is follow on to RISAT-2B and has an X-band SAR with unfurlable radial rib reflector antenna of 3.6 meter diameter. RISAT-2BR1 can operate in different modes including Very High Resolution imaging modes of 1 x 0.5 m resolution and 0.5 x 0.3 m resolution with swath of 5 to 10 km.
RISAT-2BR1 was launched aboard PSLV-C48 on 11 December 2019 at 09:55 UTC with nine other ride-sharing commercial satellites from First Launch Pad of SDSC, SHAR. Launch vehicle used was QL variant of Polar Satellite Launch Vehicle with four PSOM-XL strap-ons and employed a 195 kg Dual Launch Adapter (DLA) to accommodate primary and secondary payloads. After a flight of 16 minutes 27 seconds, RISAT-2BR1 was separated from PSLV fourth stage (PS4) and injected into 576 km circular orbit with 37.0° inclination. After primary payload, DLA-Upper and subsequently nine other co-passenger satellites were separated. RISAT-2BR1 deployed it solar panels within 3 minutes after separation and deployed its 3.6 meter antenna on 08:30 UTC, 12 December 2019.