Multichannel Scanning Radiometer of FY-2C Meteorological Satellite and Its On-Orbit Operation

The major performance,composition and principle of multichannel scanning radiometer for FY-2C geostationary meteorological satellite were introduced in this paper.The main technology improvement such as 5 channel focal plane,optical system,structure,electronics,infrared sensor,radiation cooler,optical thin film and structure of secondary scanner,which were used for changing 3 channels to 5 channels,were also presented.The on-orbit test and operation results showed that the multichannel scanning radiometer in FY-2C satellite realized the channel geoobservation simultaneously in the first generation spin geostationary meteorological satellite,which included medium wave infrared channel.The image quality of FY-2C satellite was better than that of GMS-5 and METEOSAT-5 geostationary meteorological satellite,and was similar with the one of GOES-9 three-axis stabilization meteorological satellite.