中国空间科学技术

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编队飞行小卫星群的相对自主定轨算法研究

王世练,杨军,张尔扬   

  1. 国防科技大学电子科学与工程学院,国防科技大学电子科学与工程学院,国防科技大学电子科学与工程学院 长沙410073 ,长沙410073 ,长沙410073
  • 发布日期:2003-04-25

Research of Multi-Agent Based Satellite Fault Diagnosis and Fusion Technology

Fan Xianfeng Jiang Xingwei (Harbin Institute of Technology, Harbin 150001)$$$$   

  • Online:2003-04-25

摘要: 针对有参考星的编队飞行小卫星群的自主位置保持 ,研究了基于星间测距的主从星相对自主定轨的可行性及其算法。考虑突发测量噪声对算法稳定性的影响 ,在迭代EKF算法中引入弱化因子 ,对误差较大的观测量实施“软删除” ,相比抗差Kalman滤波 ,性能稳定、额外计算量小、适于星载实现。仿真表明 ,无摄动运动下的相对定轨误差可控制在 0 1m左右 ;J2 项摄动的情况下的相对定轨误差约为 2m。

关键词: 轨道控制, 编队飞行, 小型卫星, 算法

Abstract: In order to improve the accuracy of Multi Agent based fault diagnosis system for satellite and to make use of diagnosis information captured by every diagnosis method, technology of data fusion is introduced into Multi Agent diagnosis based on the analysis of fault diagnosis theory . Weights are introduced into fusion of diagnosis result according to the feature of satellite fault diagnosis. The improved Dempster Shafer evidential theory arithmetic and the method of weights calculating are given. At last, validity of the method is proved by an example given in this paper.