中国科技核心期刊

中文核心期刊

CSCD来源期刊

空间控制技术与应用 ›› 2015, Vol. 41 ›› Issue (6): 8-.doi: 10.3969/j.issn.1674-1579.2015.06.002

• 学术研究 • 上一篇    下一篇

基于自适应滤波的脉冲星导航方法研究

  

  • 出版日期:2015-12-25 发布日期:2016-01-19

Adaptive Filter of XRay PulsarBased Navigation

  • Online:2015-12-25 Published:2016-01-19

摘要: 基于X射线脉冲星的自主导航技术能够为深空探测航天器提供高精度导航信息.脉冲星星表误差对导航性能存在不利影响,特别是方差不确定的星表误差,会引起较大定位误差.建立不确定项的导航模型,提出一种基于方差匹配的自适应滤波方法,通过估计不确定观测模型中的待估参数减小不确定项对观测的影响.通过数学仿真对比了自适应滤波方法和传统扩展卡尔曼滤波方法(EKF),验证了所提方法的有效性.

关键词: 脉冲星导航, 自适应卡尔曼滤波, 自主导航

Abstract: Highaccuracy autonomous navigation information can be obtained autonomously by pulsar navigation, including the position, velocity, attitude and time. The precision of the pulsar navigation can be mainly affected by the pulsar’s position error system, especially the uncertainty variance affect. Firstly, the uncertainty model of the pulsar navigation is presented. Secondly, the adaptive filter can reduce the unacceptable effect uncertainty variance. Numerical simulation demonstrates the effectiveness of the proposed approach.

Key words: pulsar navigation, adaptive filter, autonomous navigation

中图分类号: 

  •