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吉林大学 仪器科学与电气工程学院,吉林 长春 130012
[ "张刘 (1978-),男,安徽蚌埠人,博士,教授,2007年于哈尔滨工业大学获得工学博士学位,主要从事航天光学遥感系统设计、仿真及应用,星敏感器等技术研究。E-mail: zhangliu@jlu.edu.cn" ]
[ "王文华 (1982-),男,山东泰安人,博士,副教授,2010年于中国科学院长春光学精密机械与物理研究所获得博士学位,主要从事航天相机成像电子学、光电成像与图像处理、空间目标对接位姿测量等技术方面的研究。E-mail: wangwh900@jlu.edu.cn" ]
收稿日期:2021-09-21,
修回日期:2021-10-15,
纸质出版日期:2022-03
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张刘, 张文, 王亚明, 等. 微小卫星交会对接位姿测量中合作目标设计方法[J]. 液晶与显示, 2022,37(3):415-424.
LIU ZHANG, WEN ZHANG, Ya-ming WANG, et al. Cooperative target design method in microsatellite rendezvous and docking pose measurement[J]. Chinese journal of liquid crystals and displays, 2022, 37(3): 415-424.
张刘, 张文, 王亚明, 等. 微小卫星交会对接位姿测量中合作目标设计方法[J]. 液晶与显示, 2022,37(3):415-424. DOI: 10.37188/CJLCD.2021-0244.
LIU ZHANG, WEN ZHANG, Ya-ming WANG, et al. Cooperative target design method in microsatellite rendezvous and docking pose measurement[J]. Chinese journal of liquid crystals and displays, 2022, 37(3): 415-424. DOI: 10.37188/CJLCD.2021-0244.
针对基于视觉传感器的微小卫星大视距交会对接中,合作目标难以被相机清晰识别的问题,本文设计了一种一体化新型合作靶标,在100 m~100 mm测量范围内,实现由远及近高精度双星相对位姿解算。首先,建立合作目标模型,确定合作目标类型;其次,采用P
n
P(Perspective-
n
-Point)算法设计合作目标特征点的个数与尺寸;然后,根据相机视场、焦距与合作靶标的约束关系,确定合作目标模型尺寸;最后,通过理论与实验相结合的手段进行验证。仿真实验结果表明,在双星相对距离为100 m时,姿态误差小于4.01°,位置误差小于7.57 mm。在相对距离为100 mm时,姿态误差小于0.06°,位置误差小于0.02 mm。
Aiming at the problem that the cooperative target is difficult to be clearly recognized by the camera in the large visual range rendezvous and docking of small satellites based on vision sensors
this paper designs a new integrated cooperative target
which can achieve high precision to resolve the relative poses of the binary stars from far to near in the measurement range of 100 m to 100 mm. Firstly
a cooperative target model is established to determine the type of cooperative target. Secondly
the P
n
P (Perspective-
n
-Point) algorithm is used to design the number and size of the cooperative target's feature points. Then
according to the constraint relationship between the camera's field of view
focal length and the cooperative target
the size of the cooperative target model is determined. Finally
it is verified by a combination of theory and experiment. The simulation experiment results show that the attitude error is less than 4.01°
and the position error is less than 7.57 mm when the object distance is 100 m. When the object distance is 100 mm
the attitude error is less than 0.06°
and the position error is less than 0.02 mm.
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