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Instrument observation strategy for a new generation of three-axis-stabilized geostationary meteorological satellites from China

机译：来自中国新一代三轴稳定地球静止气象卫星的仪器观测策略

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The Fengyun-4 (FY-4) satellite series is a new generationof geostationary meteorological satellites from China. The newly adoptedthree-axis-stabilized attitude-control platform can increase observationefficiency and flexibility while bringing great challenges for imagenavigation as well as integrated observation mode design. Considering therequirements of earth observation, navigation and calibration as well asobservation flexibility, instrument observation strategies are proposed. These include the earth, the moon, stars, cold space, blackbody and diffuserobservations on which the instruments' in-orbit daily observations must bebased. The most complicated part is the star observation strategy, whilenavigation precision is dependent on in-orbit star observations. A flexible,effective, stable and automatic star observation strategy directlyinfluences star data acquisition and navigation precision. According to therequirement of navigation, two specific star observation strategies for thetwo main instruments on board FY-4A were proposed to be used in theoperational ground system. The strategies have been successfully used inFY-4A in-orbit tests for more than a year. Both the simulation results andin-orbit application results are given, including instrument observationstrategies, star observation strategies and moon observation tasks, todemonstrate the validity of the proposed observation strategies, which layimportant foundations for the instruments' daily operation.
机译：Fengyun-4（FY-4）卫星系列是来自中国的地球静止气象卫星新一代。新采用的采用轴稳定的姿态控制平台可以提高观察效率和灵活性，同时为Imagenavigation和集成观察模式设计带来了巨大挑战。考虑到地球观测，导航和校准以及诸如特殊灵活性，提出了仪器观测策略。这些包括地球，月球，星星，寒冷的空间，黑体和漫射器，其中仪器的轨道每日观察必须被占用。最复杂的部分是明星观察策略，次数依赖于轨道恒星观测。灵活，有效，稳定，自动的明星观测策略直接耗尽明星数据采集和导航精度。根据导航的规定，建议在FY-4A上的Thetwo主仪器进行两种特定的明星观测策略，以便在Wealital地面系统中使用。这些策略已成功使用了一年多的INFY-4A IN-OTBIT测试。给出了仿真结果和轨道轨道施用结果，包括仪器观察战略，明星观察策略和月亮观察任务，致力于提出拟议观察策略的有效性，该策略为仪器的日常行动提供了不足的基础。

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