| 伽利略卫星定位系统三载波姿态确定技术研究 |
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| 引用本文： | 郁丰,刘建业,曾庆化. 伽利略卫星定位系统三载波姿态确定技术研究[J]. 宇航学报, 2006, 27(6): 1187-1190 |
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| 作者姓名： | 郁丰 刘建业 曾庆化 |
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| 作者单位： | 南京航空航天大学导航研究中心,南京,210016 |
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| 摘 要： | 利用伽利略卫星定位系统来确定载体的姿态是伽利略系统的重要应用领域。目前利用GPS确定姿态的算法比较复杂，初始化时间较长，本文详细地介绍了伽利略定位系统三载波模糊度解算技术（TCAR）的要点，分析了TCAR技术求解模糊度的概率分布特点，提出了基于小模糊度搜索空间的单差模糊度搜索策略，克服了传统TCAR技术模糊度确定错误率较高的缺点。以低轨卫星姿态确定为应用对象，利用STK软件工具与Matlab进行了联合仿真，仿真结果表明，该方案完全可行，效果理想，适合单历元姿态确定。
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| 关 键 词： | 伽利略卫星定位系统 整周模糊度 姿态确定 三载波 |
| 文章编号： | 1000-1328（2006）06-1187-04 |
| 收稿时间： | 2005-11-22 |
| 修稿时间： | 2005-11-222006-03-07 |
Research on Attitude Determination by Three-Carrier Ambiguity Resolution of Galileo |
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| YU Feng,LIU Jian-ye,ZENG Qing-hua. Research on Attitude Determination by Three-Carrier Ambiguity Resolution of Galileo[J]. Journal of Astronautics, 2006, 27(6): 1187-1190 |
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| Authors: | YU Feng LIU Jian-ye ZENG Qing-hua |
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| Affiliation: | Navigation Research Center, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
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| Abstract: | It's an important aspect to determine the vehicle's attitude in real time by Galileo.The algorithm for attitude determination using GPS is complicated,needs long initialization time.Based on Three-Carrier Ambiguity Resolution(TCAR) Technique and analysis of probability distribution of integer ambiguity resolution by TCAR,a method based on a small ambiguity space and optimized ambiguity search algorithm is presented.Compared to traditional TCAR,it wins a higher success probability of Integer ambiguity determination.The algorithm is applied to attitude determination for a LEO satellite in the simulation by STK and Matlab.The result indicates that the method is feasible and is suitable for single epoch attitude determination. |
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| Keywords: | Galileo Integer ambiguity Attitude determination Three-carrier |
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