资源三号国产星敏感器事后定姿方案设计与系统实现

发布时间：2018-03-14 18:11

本文选题：资源三号卫星　切入点：事后定姿方案　出处：《武汉大学学报(信息科学版)》2017年04期 　论文类型：期刊论文

【摘要】：作为绝对姿态测量精度最高的仪器,星敏感器已广泛应用在当前大多遥感卫星上,其定姿精度直接影响光学测绘遥感卫星的几何定位能力。针对资源三号卫星首次下传的国产APS原始星图数据,设计并实现了一套基于国产星图的地面事后定姿方案。该方案充分利用地面事后定姿时间充足、计算资源丰富的特点,重点对星图预处理、星表重构、星图识别、恒星相机在轨检校等关键技术进行优化和改进,实现了一套资源三号国产星敏感器事后定姿系统,并将其应用于基于国产星图的绝对姿态确定中。利用资源三号卫星下传原始星图对该系统进行全面试验验证,结果分析表明,事后定姿系统不仅可靠性高,而且定姿精度达到1.82角秒(1σ,光轴指向精度),优于星上处理2.18角秒(1σ),为资源三号卫星原始星图业务化处理提供了技术保障。
[Abstract]:As the instrument with the highest precision of absolute attitude measurement, the star sensor has been widely used in most remote sensing satellites. The precision of attitude determination directly affects the geometric positioning ability of optical surveying and mapping remote sensing satellite. In view of the original APS star map data first transmitted from Resource-3 satellite, This paper designs and implements a set of ground postmortem determination scheme based on domestic star map, which makes full use of sufficient ground postmortem determination time and abundant computing resources, and focuses on star map preprocessing, star catalog reconstruction and star map recognition. The key technologies, such as star camera on-orbit calibration, have been optimized and improved, and a set of post-post attitude determination system for domestic star sensor No. 3 has been realized. It is applied to the absolute attitude determination based on the domestic star map. The system is tested and verified by using the original star map transmitted down by the resource 3 satellite. The results show that the attitude determination system is not only reliable, but also reliable. Moreover, the precision of attitude determination is 1.82 angle / s 1 蟽, and the optical axis pointing accuracy is 1.82, which is superior to the onboard processing of 2.18 angle / second / 1 蟽, which provides a technical guarantee for the operational processing of the original star map of the resource 3 satellite.
【作者单位】：国家测绘地理信息局卫星测绘应用中心;辽宁工程技术大学测绘与地理信息学院;信息工程大学地理空间信息学院;
【基金】：国家青年自然科学基金(41301525,41571440) 测绘地理信息公益性行业科研专项(201512012) 基础测绘青年科技项目(1461501900202) 国家测绘地理信息局青年学术带头人基金(201607)~~
【分类号】：P237

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