二维调节式太阳观测系统变形误差在轨辨识与补偿
doi: 10.11728/cjss2026.01.2025-0016 cstr: 32142.14.cjss.2025-0016
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王皓 男, 1984年9月出生于山西省太原市, 现为上海卫星工程研究所高级工程师, 主要研究方向为卫星姿轨控设计与仿真、遥感图像导航与配准等. E-mail: wanghaobuaa@163.com -
张立昌 男, 1984年8月出生于山东省聊城市, 现为上海卫星工程研究所工程师, 主要研究方向为卫星总体设计与遥感图像处理. E-mail: q_q_zone@163.com
作者简介:
通讯作者:
On-orbit Identification and Compensation for Deformation Errors of Two-demensional Adjusment Solar Observation System
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摘要: 针对卫星二维调节式太阳观测系统内部变形误差导致的光轴指向偏差问题, 提出了一种变形误差在轨辨识与补偿方法. 对太阳观测系统内部光路传递过程进行了数学建模, 对数学模型中的变形误差参数给出在轨辨识与补偿方法, 通过引入高精度数字太敏分步辨识的方式, 解决了利用太阳观测成像结果无法直接解算全部变形误差参数的问题, 通过数学仿真对辨识与补偿方法进行模拟, 并以光轴指向精度作为评价标准对补偿效果进行了评估. 仿真结果表明, 变形误差在轨补偿前后, 太阳观测载荷光轴指向精度提升了两个数量级. 验证了本文提出方法的有效性. 研究结果可为其他含有二维调节机构的有效载荷提供参考.Abstract: Aiming at the problem of optical axis pointing deviation caused by the internal deformation errors of the satellite’s solar observation system with two-dimensional adjustment, an on-orbit identification and compensation method for the deformation errors is proposed. Firstly, the mathematical modeling for the light path transfer process of the solar observation system is established. Secondly, the on-orbit identification and compensation method for the deformation error parameters in the mathematical model is given. Finally, the identification and compensation methods are simulated by mathematical simulation. The compensation effect is evaluated with the optical axis pointing accuracy as the evaluation standard. The simulation results show that the pointing accuracy of the solar observation payload's optical axis is improved by two orders of magnitude before and after the on-orbit compensation for the deformation error, which verifies the effectiveness of the proposed method. The results can be used as a reference for other payloads with a two-dimensional adjustment mechanism.
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图 1 太阳观测系统坐标系定义
Figure 1. Schematic diagram of coordinate definition of the solar observation system
图 2 太阳观测等效变形误差在轨辨识示意
Figure 2. On-orbit identification for deformation errors of the solar observation system
图 3 数字太敏视场内5个太阳矢量示意
Figure 3. Schematic diagram of solar vectors within the view field of digital sun sensor
图 4 理想光轴与实际光轴指向偏差
Figure 4. Deviation between ideal optical axis and actual optical axis
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