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公开(公告)号：US6102338A
公开(公告)日：2000-08-15
申请号：US919193
申请日：1997-08-28
CPC分类号： G05D1/0883 , B64G1/24 , B64G1/288 , B64G1/361 , G01C21/025 , B64G1/36
摘要： An attitude determination system for an artificial satellite capable of performing star identification without need for the aid of ground station includes an image processing module (17) for processing star images observed at predetermined time points by a star sensor (16) mounted on the artificial satellite (1) for arithmetically determining direction vectors of the observed stars, a rotation estimating module (18) for estimating a rotational motion of the artificial satellite (1) between an attitude of the artificial satellite at a predetermined time point and an attitude of the artificial satellite at another time point, an elongation estimating module (19) for estimating elongations between the direction vectors of plural stars the images of which are picked up at a same time point by the star sensor and estimating the elongations between the direction vectors of plural stars the images of which are picked up at different time points by the star sensor on the basis of the estimated rotational motion, a star identifying module (20) for establishing correspondences between a plurality of the stars for which relation of the elongation has been determined and stars on a star catalog for identifying the stars, and an attitude angle estimating module (21) for estimating an attitude angle of the artificial satellite on the basis of result of identification of the stars.
摘要翻译： 能够在不需要地面站的帮助下进行星型识别的人造卫星的姿势确定系统包括：图像处理模块（17），用于处理在预定时间点由安装在人造卫星上的星形传感器（16）观察到的星形图像 （1），用于对所述观测星的方向矢量进行算术确定;旋转估计模块，用于估计所述人造卫星在预定时间点的姿态与人造卫星的姿态之间的旋转运动; 卫星在另一个时间点，延伸率估计模块（19），用于估计多个恒星的方向向量之间的延伸，其中图像由星形传感器在同一时间点被拾取并且估计多个恒星的方向向量之间的伸长 其基于估计的星形传感器在不同时间点拾取图像 旋转运动的星形识别模块（20），用于在已经确定了伸长关系的多个星星之间建立对应关系，并且用于识别恒星的星形目录上的恒星;以及姿态角估计模块（21），用于估计 人造卫星的姿态角基于星星识别的结果。
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公开(公告)号：US06227496B1
公开(公告)日：2001-05-08
申请号：US09610603
申请日：2000-07-05
IPC分类号： B64G136
CPC分类号： G05D1/0883 , B64G1/24 , B64G1/288 , B64G1/36 , B64G1/361 , G01C21/025
摘要： An attitude determination system for an artificial satellite capable of performing star identification without need for the aid of ground station includes an image processing module (17) for processing star images observed at predetermined time points by a star sensor (16) mounted on the artificial satellite (1) for arithmetically determining direction vectors of the observed stars, a rotation estimating module (18) for estimating a rotational motion of the artificial satellite (1) between an attitude of the artificial satellite at a predetermined time point and an attitude of the artificial satellite at another time point, an elongation estimating module (19) for estimating elongations between the direction vectors of plural stars the images of which are picked up at a same time point by the star sensor and estimating the elongations between the direction vectors of plural stars the images of which are picked up at different time points by the star sensor on the basis of the estimated rotational motion, a star identifying module (20) for establishing correspondences between a plurality of the stars for which relation of the elongation has been determined and stars on a star catalog for identifying the stars, and an attitude angle estimating module (21) for estimating an attitude angle of the artificial satellite on the basis of result of identification of the stars.
摘要翻译： 能够在不需要地面站的帮助下进行星型识别的人造卫星的姿势确定系统包括：图像处理模块（17），用于处理在预定时间点由安装在人造卫星上的星形传感器（16）观察到的星形图像 （1），用于对所述观测星的方向矢量进行算术确定;旋转估计模块，用于估计所述人造卫星在预定时间点的姿态与人造卫星的姿态之间的旋转运动; 卫星在另一个时间点，延伸率估计模块（19），用于估计多个恒星的方向向量之间的延伸，其中图像由星形传感器在同一时间点被拾取并且估计多个恒星的方向向量之间的伸长 其基于估计的星形传感器在不同时间点拾取图像 旋转运动的星形识别模块（20），用于在已经确定了伸长关系的多个星星之间建立对应关系，并且用于识别恒星的星形目录上的恒星;以及姿态角估计模块（21），用于估计 人造卫星的姿态角基于星星识别的结果。
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