北京航空航天大学学报 ›› 2001, Vol. 27 ›› Issue (2): 161-163.

• 论文 • 上一篇    下一篇

时钟偏差辅助的GPS完整性监测算法

黄继勋, 周丽弦, 范跃祖   

  1. 北京航空航天大学 自动控制系
  • 收稿日期:1999-12-09 出版日期:2001-02-28 发布日期:2010-09-27
  • 作者简介:黄继勋(1975-),男,江西高安人,博士生,100083,北京.
  • 基金资助:

    国家"八六三"高技术研究发展计划资助项目(863-306-ZT04-03-4)

General RAIM Algorithm Based on Aiding of Receiver Clock Bias

HUANG Ji-xun, ZHOU Li-xian, FAN Yue-zu   

  1. Beijing University of Aeronautics and Astronautics, Dept. of Automatic Control
  • Received:1999-12-09 Online:2001-02-28 Published:2010-09-27

摘要: 对伪距残差最小二乘的接收机自主完整性监测(RAIM)算法进行了分析.在此基础上,通过对接收机时钟偏差的建模,将模型预测的时钟偏差引入伪距残差最小二乘的RAIM算法中,保证了在可见星仅为4颗的情况下,仍能利用χ2检验法对全球定位系统(GPS)进行完整性监测,从而达到提高完整性监测算法有效性的目的.计算机仿真的结果显示,这种辅助方式不仅计算简单,而且有效可行.

Abstract: The characters of least-squares-residuals method belonging to receiver autonomous integrity monitoring(RAIM) were analyzed. After the receiver clock bias behavior was accurately modeled using global positioning system(GPS) measurements, a new algorithm for RAIM was developed based on the least-squares-residuals method with the aiding of receiver clock bias. It can be gained through the model. The novelty lies in that on the condition of only four satellites in view, it can still use chi-square distribution to detect the failure satellite of GPS. So it can improve the availability of RAIM. The simulation results show that this algorithm is not only simple but also available and feasible.

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