Building being imaged

This office building neighbouring RUAG Space AB in Gothenburg, Sweden, was imaged by the Geostationary Atmospheric Sounder demonstrator in mm-waves. The instrument has a rotating configuration which allows for a reduced number of antenna elements relative to a stationary Y-shape interferometer. The rotation also provides useful information for relative phase calibration. The required dense sampling of the visibility function over the complete field of view is achieved after half a revolution of the array.