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Instrument observation strategy for a new generation of three-axis-stabilized geostationary meteorological satellites from China
Geoscientific Instrumentation, Methods and Data Systems ( IF 1.8 ) Pub Date : 2019-07-18 , DOI: 10.5194/gi-8-161-2019 Jian Shang , Lei Yang , Pan Huang , Huizhi Yang , Chengbao Liu , Jing Wang , Lei Zhao , Shengxiong Zhou , Xiaodong Chen , Zhiqing Zhang
Geoscientific Instrumentation, Methods and Data Systems ( IF 1.8 ) Pub Date : 2019-07-18 , DOI: 10.5194/gi-8-161-2019 Jian Shang , Lei Yang , Pan Huang , Huizhi Yang , Chengbao Liu , Jing Wang , Lei Zhao , Shengxiong Zhou , Xiaodong Chen , Zhiqing Zhang
The Fengyun-4 (FY-4) satellite series is a new generation
of geostationary meteorological satellites from China. The newly adopted
three-axis-stabilized attitude-control platform can increase observation
efficiency and flexibility while bringing great challenges for image
navigation as well as integrated observation mode design. Considering the
requirements of earth observation, navigation and calibration as well as
observation flexibility, instrument observation strategies are proposed. These include the earth, the moon, stars, cold space, blackbody and diffuser
observations on which the instruments' in-orbit daily observations must be
based. The most complicated part is the star observation strategy, while
navigation precision is dependent on in-orbit star observations. A flexible,
effective, stable and automatic star observation strategy directly
influences star data acquisition and navigation precision. According to the
requirement of navigation, two specific star observation strategies for the
two main instruments on board FY-4A were proposed to be used in the
operational ground system. The strategies have been successfully used in
FY-4A in-orbit tests for more than a year. Both the simulation results and
in-orbit application results are given, including instrument observation
strategies, star observation strategies and moon observation tasks, to
demonstrate the validity of the proposed observation strategies, which lay
important foundations for the instruments' daily operation.
更新日期：2019-07-18
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