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中文摘要: 星敏感器通过观测恒星进而解算载体的姿态信息，其姿态精度决定了系统的导航精度。为了分析星点随机误差对星敏感器精度的影响，基于QUEST算法，通过求解Whaba问题，提出了星点随机误差对星敏感器精度影响的解析模型。利用该模型分析了星点随机质心误差与星敏感器精度之间的关系，仿真结果表明，星点相对于探测器原点的均匀性和平均距离影响了星敏感器的姿态精度，而非星敏感器的视场。解析模型揭示了星点随机误差、星点的位置和姿态精度之间的关系。所提解析模型的三轴姿态解算精度为(98.1%, 93.3%, 96.1%)，而经验模型的三轴姿态解算精度为(58.8%,61.5%,26.9%)。星敏感器的精度分析对星敏感器光学系统设计、标定和天文导航具有重要的指导意义。
Abstract:Star sensor is a high-precision attitude measurement device, and its attitude measurement accuracy plays a decisive role in navigation. In order to analyze the impact of star points’ random errors on the accuracy of star sensors, based on the QUEST algorithm, an analytical model for the influence of star points’ random errors on the star sensor accuracy is proposed by solving the Whaba problem. The relationship between the random centroid error of star points and the accuracy of star sensors is analyzed using this model. The simulation results show that the uniformity and average distance of star points relative to the detector origin affect the attitude accuracy of star sensors, rather than the field of view. The analytical model reveals the relationship between the star points’ random error, the star points position and attitude accuracy. The three-axis attitude solution accuracy of the proposed model is (98.1%, 93.3%, 96.1%), while that of the empirical model is (58.8%,61.5%,26.9%). The accuracy analysis of star sensors has important guiding significance for the design, calibration, and astronomical navigation of star sensor optical systems.
文章编号：20250507 中图分类号：V11 文献标志码：A
基金项目:科技部国家重点研发计划专项项目（2019YFA0706003）；中国航天科技集团有限公司第八研究院产学研合作基金资助项目（SAST2023-058）
引用文本：
汪洪源,武少冲,郑循江,孙朔冬,叶志龙,张徐玮,姚帅,杨振.星点随机误差对星敏感器精度影响的解析模型[J].飞控与探测,2025,8(5):61-69.
汪洪源,武少冲,郑循江,孙朔冬,叶志龙,张徐玮,姚帅,杨振.星点随机误差对星敏感器精度影响的解析模型[J].飞控与探测,2025,8(5):61-69.