DARPA program aims to “see” through clouds.
DARPA’s Video Synthetic Aperture Radar (ViSAR) program seeks to develop and demonstrate an Extremely High Frequency (EHF) targeting sensor which operates through clouds as effectively as today’s infrared (IR) sensors operate in clear weather.
The brief from DARPA seems to indicate they’d like to use the technology on airborne drones, to keep watch over enemy movements for a strike from the air or to relay the information to troops on the ground.