In order to simultaneously determine the values of total solar irradiance (TSI) and Earth’s radiation at top atmosphere (TOA) on board Fengyun-3F satellite, a spaceborne relative radiometer (SRR) was developed. It adopts dual-channel structure, including channel (SR) with an unobstructed field view (FOV) 1.5° Earth (ER) wide (WFOV) 95.3° diameter about 1900 km ground. Before launch, both SR ER ...
