This humidity and temperature profiler uses radiation using two bands: 22-31 GHz (7 channel filter bank humidity profiler and LWP radiometer) and 51-58 GHz (7 channel filter bank temperature profiler).
Temperature vertical resolution is 50 m in the boundary layer (0-1200 meters), 200 m until 5000 m altitude, and 400 m until 1000 m altitude. Tropospheric humidity profiles have a resolution of 200 m in the first 2 km altitude and 400 m of altitude between 2-5 km.
It is a stand-alone system, automated and functional under nearly all environmental conditions.