India boosts radar satellite count with two launches in 2019

Among the significant but low-profile Indian space missions of 2019 were the launches of two Radar Imaging Satellites, RISAT-2B and RISAT-2BR1. Earth observation (EO) satellites that use a radar, thus giving them all-weather vision, have been around since 1978. India entered this field in 2009 with RISAT-2 using an Israeli built payload. Ten years on, the Indian Space Research Organisation (ISRO) has now increased to four its tally of SAR, or synthetic aperture radar, satellites. More

(Source: The Hindu - Jan 3)