作者投稿和查稿 主编审稿 专家审稿 编委审稿 远程编辑

计算机工程 ›› 2011, Vol. 37 ›› Issue (11): 251-252,256. doi: 10.3969/j.issn.1000-3428.2011.11.087

• 工程应用技术与实现 • 上一篇    下一篇

基于Kalman滤波的单基准站钟差估计

李振校,李治安,卢艳娥   

  1. (空军工程大学电讯工程学院,西安 710077)
  • 收稿日期:2010-12-20 出版日期:2011-06-05 发布日期:2011-06-05
  • 作者简介:李振校(1985-),男,硕士研究生,主研方向:GPS/BD2高精密定位,数字信号处理;李治安,教授;卢艳娥,副教授
  • 基金资助:
    空军工程大学电讯工程学院科研创新基金资助项目(DY CX1002)

Time Correction Estimation of Single Reference Station Based on Kalman Filtering

LI Zhen-xiao, LI Zhi-an, LU Yan-e   

  1. (Telecommunication Engineering Institute, Air Force Engineering University, Xi’an 710077, China)
  • Received:2010-12-20 Online:2011-06-05 Published:2011-06-05

摘要: 在卫星定位中,通常认为地面系统的钟差是常数,但在实际中地面系统的钟差是随时间变化而变化的。为此,提出一种基准站钟差的估计方法,假设钟差的时钟模型有三参数,运动目标假设为siger模型,利用预报星历数据进行后处理,采用Kalman滤波算法对基准站的钟差进行仿真,得到基准站钟差的变化误差。结果表明,该方法能有效提高卫星定位精度。

关键词: 时间估计, Kalman滤波, 基准站, 钟差, 定位精度

Abstract: In the satellite positioning, the time correction of reference station is considered generally as a fixed number, but in actually, the time correction of reference station is considered changed along with the time. For this, a method of time correction estimation is put forward and the time model is corrected with three parameter. The time correction error of reference station can be got through using ephemeris data, supposing the moving-target as siger model and introducing the Kalman filtering algorithm. The time correction of reference station is accurately estimated. The results demonstrate that the positioning accuracy is advanced largely.

Key words: time estimation, Kalman filtering, reference station, time correction, positioning accuracy

中图分类号: