FY-2C星多通道扫描辐射计及其在轨运行

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

介绍了风云二号(FY-2)C静止气象卫星多通道扫描辐射计的性能、组成和工作原理,以及为适应将3通道改为5通道而完成的5通道焦平面、光学系统、结构、电子学、红外探测器、辐射致冷器、光学薄膜和第二扫描结构等主要设计改进。卫星的在轨测试和运行结果表明,C星扫描辐射计在第一代自旋静止气象卫星上实现了包括中波红外的5通道同时对地观测,图像质量总体优于同类GMS-5,METEOSAT-5静止气象卫星,与目前应用的GOES-9三轴稳定静止气象卫星基本相当。

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 O, OES-9 three-axis stabilization meteorological satellite.