 Render of Radar Imaging Satellite RISAT-1 in deployed configuration. | |
| Manufacturer | ISRO |
|---|---|
| Country of origin | India |
| Operator | ISRO |
| Applications | Earth imaging SAR |
| Specifications | |
| Launch mass | 400 kg (880 lb)-2,000 kg (4,400 lb) |
| Power | Up to 2200 W |
| Batteries | Solar |
| Equipment | Synthetic Aperture Radar |
| Regime | SSO |
| Production | |
| Status | Operational |
| Launched | 6 |
| Operational | 4 |
| Lost | 1 |
| Maiden launch | RISAT-2 (2009) |
| Last launch | RISAT-1A (2022) |
RISAT (Radar Imaging Satellite) is a series of Indian radar imaging reconnaissance satellites built by the Indian Space Research Organization (ISRO). They provide all-weather surveillance using synthetic aperture radars (SAR).
The RISAT series are the first all-weather Earth observation satellites from ISRO. Previous Indian observation satellites relied primarily on optical and spectral sensors which were hampered by cloud cover.
After the 26 November 2008, 2008 Mumbai attacks, the launch plan was modified to launch RISAT-2 before RISAT-1, since the indigenous C-band SAR to be used for RISAT-1 was not ready. RISAT-2 used an Israel Aerospace Industries (IAI) X-band SAR sensor similar to the one employed on TecSAR.