A microwave radiometer is a radiometer that measures energy emitted at one millimeter-to-metre wavelengths (frequencies of 0.3–300 GHz) known as microwaves.

A net radiometer is a type of actinometer used to measure net radiation at the Earth's surface for meteorological applications.

Light-powered, vacuum-sealed kinetic device.

a sensor designed and manufactured by the Raytheon Company on board the polar-orbiting Suomi National Polar-orbiting Partnership (Suomi NPP), NOAA-20, and NOAA-21 weather satellites.

a Japanese remote sensing instrument onboard the Terra satellite launched by NASA in 1999.