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文部省宇宙科学研究所内之浦宇宙空间观测所1991年8月30日用M-3S-Ⅱ火箭发射了第14号科学观测卫星SOLAR-A(发射后命名为“日光”号)。它是当前日本唯一一颗在轨执行观测太阳峰年活动任务的太阳观测卫星,它利用星上搭载的观测仪器将完成各种高精度的观测任务,因此必须进行高精度的姿态控制,为此星上配置了姿态测量用敏感器,其中之一星跟踪器可持续地跟踪恒星,在摄取到已知的星图后进行识别处理,对星图上的已知星跟踪定向,然后利用陀螺仪等星载仪器校正卫星姿态。根据初始运用情况和以后的在轨数据分析,可确认该星跟踪器已满足所希望达到的姿态检测精度和星等精度。本文记述了“日光”号搭载的星跟踪器的在轨性能。
On August 30, 1991, the U-Space Observatory of the Ministry of Education, Culture, Sports, Science and Technology under the U-Space Observatory issued the SOLAR-A Scientific Observation Satellite No. 14 (named “Nikko” after launch) using the M-3S-II rocket. It is currently the only Japanese observatory in orbit to perform the task of observing the solar peak year. It uses high-precision observational tasks with on-board observation instruments, and therefore requires high-precision attitude control. This star is equipped with sensors for attitude measurement. One of the star trackers can follow the stars continuously, identify the stars after capturing the known star image, track the known stars on the star image, and then use the gyroscope Instrument and other satellite equipment calibration satellite attitude. Based on initial use and subsequent in-orbit data analysis, it is confirmed that the star tracker has satisfied the desired attitude detection accuracy and star accuracy. This article describes the orbital performance of the Star Tracker on the Nikko.