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基于自适应Kalman滤波器的原子钟信号预测方法

陈小敏1, 李孝辉2   

  1. 1. 焦作大学 基础部, 河南 焦作 454000; 2. 中国科学院 国家授时中心, 西安 710600
  • 收稿日期:2008-07-02 修回日期:1900-01-01 出版日期:2009-05-26 发布日期:2009-06-23
  • 通讯作者: 李孝辉

Adaptive Estimate of Noise Covariance Matrix in Kalman Filter

CHEN Xiao min1, LI Xiao hui2   

  1. 1. Department of Foundation, Jiaozuo University, Jiaozuo 454000, Henan Province, China;2. National Time Service Center, Chinese Academy of Sciences, Xi’an 710600, China
  • Received:2008-07-02 Revised:1900-01-01 Online:2009-05-26 Published:2009-06-23
  • Contact: LI Xiao hui

摘要: 给出一种Kalman滤波器噪声方差阵的自适应更新方法, 该方法在进行原子钟参数估计时不需要预先输入噪声参数, 且噪声参数在递推过程中自动更新并随噪声改变而自适应改变. 利用国家授时中心标准时间(UTC(NTSC))与铷原子钟的钟差数据进行了验证, 结果表明, 效果优于一般的Kalman滤波器. 

关键词: 预测, Kalman滤波器, 原子钟

Abstract: An adaptive update method of noise covariance is given. This method needn’t input the noise parameters, the noise parameter can automatically renew according the change of the noise in recursion. This method was checked with origin measure data of UTC(NTSC) and the time of rubidium atomic clock. The experiment results show that this method is better than general Kalman filter. 

Key words: prediction, Kalman filter, atomic clock

中图分类号: 

  • O4-34