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多通道扫描成像辐射计是FY-4卫星的主要载荷之一,可实现对地的多光谱观测。辐射计在轨运行期间承受复杂的外热流环境,为保证高质量的成像品质,必须对其进行有效的热设计。根据地球静止轨道和辐射计构型特点,分析了热设计的特点,并对仪器进行详细的热设计和热分析,计算结果证明了热设计方案的合理性。
Multichannel scanning imaging radiometers are one of the major payloads of the FY-4 satellite, enabling multi-spectral observations of the earth. Radiometers are subjected to complicated external heat flux conditions during orbital operation. In order to ensure high quality imaging, they must be effectively thermally designed. According to the characteristics of geostationary orbit and the configuration of radiometer, the characteristics of the thermal design are analyzed, and the thermal design and thermal analysis of the instrument are carried out in detail. The calculation results prove the rationality of thermal design scheme.