FY-4大气垂直探测仪扫描镜的太阳入侵研究

摘要

A model of solar irradiation on sensors onboard the FY-4 geostationary satellite in the case of solar intrusion was proposed. Solar radiation and the angle of incidence of the sun light on arbitrary surface of satellite can be calculated at any given time. Considering structure of baffle, the solar radiation, angle of incidence and the solar intrusion duration on scanning mirror of atmosphere vertical sounder on any day of the year can be given. The changes in one year are also given. The simulation results are similar with the measured data of GOES-8 ( Geostationary Operational Environmental Satellites) , and proved the accury of the simulation data.%针对FY-4三轴稳定静止卫星上遥感器的夜间太阳入侵问题,建立了星上遥感器的太阳辐照模型,由此计算了星上任意面元的太阳入射角系数和太阳辐射.针对其上的大气垂直探测仪结合遮光罩实际设计参数,分析了扫描镜的每日太阳入射角系数、太阳辐射、太阳入侵的时刻、入侵持续时间以及接受的太阳辐照的年变化曲线,并与GOES-8(地球静止轨道环境卫星8号)实测数据作比较,验证了计算的合理性和正确性.