The Indian Space Research Organization (ISRO) has been developing microwave instruments for remote sensing missions since 1978, including radiometers, scatterometers and synthetic aperture radars. This talk will describe the organization’s overall remote-sensing program, and then focus on recent developments in scatterometry and synthetic aperture radar systems, notably OceanSat-2 and Radar Imaging Satellite 1. Kumar, a scientist at ISRO’s Space Applications Centre for more than 30 years, has contributed significantly towards the effective utilization of space technology for the studies of ocean, atmosphere and climate for societal benefits. The main focus of his research has been using satellite data for ocean state predictions with assimilative numerical models and algorithms development. His contributions are predominantly towards altimeter, scatterometer and synthetic aperture radar systems.