中国空间科学技术

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基于GPS的三维姿态确定系统研究

郑庆晖,张育林,曾国强,刘友明   

  1. 国防科技大学航天与材料工程学院,装备指挥技术学院,装备指挥技术学院,装备指挥技术学院 长沙410073 ,北京101416 ,北京101416 ,北京101416
  • 发布日期:2003-08-25

Research on 3D Attitude Determination System Based on GPS

Zheng Qinghui (College of Aerospace and Material Engineering, National University of Defense Technology Changsha 410073) Zhang Yulin Zeng Guoqiang Liu Youming (College of Arming and Commanding Technic,Beijing 101416 )   

  • Published:2003-08-25

摘要： 论述了基于GPS姿态确定的原理、方法、步骤。首先 ,利用最小二乘平差校准基线 ,得到基线的准确长度及相互间的几何关系 ;随后 ,可以利用这些约束条件加速模糊度求解过程 ,适于实时应用。通过估计基线向量得到姿态粗解 ,以粗解为初值进行迭代最小二乘平差 ,最后得到最终的姿态解。通过一个实验系统验证 ,给出了实验结果

关键词: 最小二乘法, 实时估计, 全球定位系统, 卫星姿态

Abstract: A 3D attitude determination system is established. Theory and algorithm of attitude determination based GPS are addressed in this paper. Least square adjustment is used to calibrate baseline, then get baseline length and angle between two baselines, which can be used as a restriction to accelerate ambiguity resolution. Vector of baseline is estimated to get coarse attitude, ultimately, the precise attitude is estimated by iterative least square adjustment. All the discussed above are validated by attitude determination system.