An X-band imaging radar built by Israel Aerospace Industries and flown on RISAT-2, India's first radar imaging satellite in orbit, from 2009 to 2022.
Like all imaging radars, it sends microwave pulses and records the echoes, so it can see through cloud and at night. Its finest mode, spotlight, resolved details smaller than 1 m on a chosen target.
The radar used a dish antenna and the whole spacecraft turned to point it. It had several modes: a 3 m stripmap mode, a wide ScanSAR mode covering up to 100 km at 8–20 m, the sub-metre spotlight mode, and a mosaic mode that stitched several spots together. Israel Aerospace Industries built it on its TecSAR design.
PSLV-C12 launched the 300 kg RISAT-2 in April 2009. It carried fuel for a four-year life but supplied radar data for 13 years, mostly for disaster management. It re-entered over the Indian Ocean on 30 October 2022.