一种伪随机脉冲的快速参数估计方法

刘伟平; 郝金明; 田英国; 于合理

doi:10.13203/j.whugis20130556

一种伪随机脉冲的快速参数估计方法

信息工程大学导航与空天目标工程学院, 河南郑州, 450001

基金项目: 中国第二代卫星导航系统重大专项资助项目(GFZX0301040308);信息工程大学博士研究生学位论文创新基金资助项目(S201307)。

详细信息

作者简介:
刘伟平,博士,讲师,主要从事卫星精密定轨研究。E-mail:lwpchxy@sina.com

通讯作者:
郝金明,教授。E-mail:hjm@163.com

中图分类号: P228.41;P207.2
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出版历程
- 收稿日期: 2014-05-09
- 发布日期: 2015-11-04

Fast Parameter Estimation for Pseudo-Stochastic Pulse

College of Navigation and Aerospace Engineering, Information Engineering University, Zhengzhou 450001, China

Funds: The National Key Projects of Second-generation Navigation Satellite System of China, No. GFZX0301040308;the Innovation Fund for PhD of Information Engineering University, No. S201307.

摘要

摘要: 在精密定轨中,附加伪随机脉冲能够很好地弥补力学模型精度不足的问题,然而由于伪随机脉冲数量通常较多,如果利用常规最小二乘方法直接进行参数估计,会严重降低计算效率。针对这一问题,给出了一种基于参数预消除与回代思想的伪随机脉冲参数快速估计方法,实测算例表明,利用本文方法,能够获得与常规最小二乘方法相同的参数估值,但本文方法在计算效率上要明显优于后者。
- 伪随机脉冲 /
- 参数快速估计 /
- 参数预消除 /
- 力学模型 /
- 精密定轨
Abstract: Pseudo-stochastic pulse can compensate for the deficiencies of a dynamic model in precise orbit determination. Because of the great number of pseudo-stochastic parameters, the efficiency of the conventional least squares estimation may be depressed. To resolve this problem, a method based on the theory of parameter pre-elimination and back substitution, is presented. This proposed method was validated by experiments, and the result shows that parameter estimation using this method is the same as that of the conventional least squares, but with improved efficiency.
- pseudo-stochastic pulse /
- fast parameter estimation /
- parameter pre-elimination /
- dynamic model /
- precise orbit determination

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参考文献(21)

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施引文献(8)

期刊类型引用(6)

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