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光电二极管的地球反照光校正及卫星姿态估计

褚理想 樊巧云

褚理想, 樊巧云. 光电二极管的地球反照光校正及卫星姿态估计[J]. 北京航空航天大学学报, 2019, 45(4): 827-833. doi: 10.13700/j.bh.1001-5965.2018.0470
引用本文: 褚理想, 樊巧云. 光电二极管的地球反照光校正及卫星姿态估计[J]. 北京航空航天大学学报, 2019, 45(4): 827-833. doi: 10.13700/j.bh.1001-5965.2018.0470
CHU Lixiang, FAN Qiaoyun. The earth's albedo correction of photodiodes and satellite attitude estimation[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(4): 827-833. doi: 10.13700/j.bh.1001-5965.2018.0470(in Chinese)
Citation: CHU Lixiang, FAN Qiaoyun. The earth's albedo correction of photodiodes and satellite attitude estimation[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(4): 827-833. doi: 10.13700/j.bh.1001-5965.2018.0470(in Chinese)

光电二极管的地球反照光校正及卫星姿态估计

doi: 10.13700/j.bh.1001-5965.2018.0470
基金项目: 

国家自然科学基金 61475012

详细信息
    作者简介:

    褚理想  男, 硕士研究生。主要研究方向:微型太阳敏感器

    樊巧云  女, 博士, 副教授, 硕士生导师。主要研究方向:光电精密测量、天体敏感器及天文导航、机器视觉

    通讯作者:

    樊巧云, E-mail: fqy@buaa.edu.cn

  • 中图分类号: V448.22

The earth's albedo correction of photodiodes and satellite attitude estimation

Funds: 

National Natural Science Foundation of China 61475012

More Information
  • 摘要:

    光电二极管作为体积小、成本低的太阳敏感器,可以结合地球敏感器进行卫星三轴姿态估计,但是地球反照光对其具有严重的影响,从而限制了其应用,然而地球反照光数学模型应用复杂。针对此问题,首先建立了一种简化的光电二极管量测模型,将地球反照光设成动态偏置项补偿在光电二极管模型中,并将误差建模为混合高斯噪声。然后应用滑窗估计和随机权重策略动态估计和更新模型中的参数。同时,采用多比例因子分别估计各光电二极管的地球反照光影响,并引入Huber影响函数处理异常值,从而提高了算法鲁棒性和参数估计精度。实验结果表明,采用地球反照光校正的光电二极管量测模型和无迹卡尔曼滤波(UKF)算法可实现卫星的高精度姿态估计,三轴姿态精度能达到0.2°~0.3°。

     

  • 图 1  地球反照光几何示意图

    Figure 1.  Geometric sketch of the earth's albedo

    图 2  滑窗估计和随机权重算法示意图

    Figure 2.  Schematic diagram of sliding window estimation and random weighting algorithm

    图 3  光电二极管1、2和3的理想电压与量测电压对比

    Figure 3.  Comparison of ideal voltage and measured voltage for photodiode 1, 2 and 3

    图 4  卫星三轴姿态估计误差对比

    Figure 4.  Comparison of satellite three-axis attitude estimation error

    图 5  光电二极管1、2和3的偏置估计误差

    Figure 5.  Bias estimation errors of photodiode 1, 2 and 3

    表  1  光电二极管偏置估计误差RMS

    Table  1.   RMS of photodiode bias estimation error

    mV
    权重选取策略 光电二极管1 光电二极管2 光电二极管3
    固定权重 3.18 3.46 1.53
    残差模值 2.97 2.95 1.46
    Huber模值 2.90 2.88 1.48
    本文方法 2.24 2.79 1.13
    下载: 导出CSV
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出版历程
  • 收稿日期:  2018-08-10
  • 录用日期:  2018-11-08
  • 刊出日期:  2019-04-20

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