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基于GPS/BDS的陆基增强系统精度和完好性

倪育德,路璐,刘瑞华   

  1. (taptap下载安装安卓电子信息与自动化学院,天津300300)
  • 收稿日期:2017-01-22 修回日期:2017-03-15 出版日期:2017-12-27 发布日期:2017-12-15
  • 作者简介:倪育德(1963—),男,江西鹰潭人,教授,工学硕士,研究方向为无线电导航与监视.
  • 基金资助:
    国家空管委科研项目(GKG201410004);民航安全能力建设项目(AADSA0007)

Accuracy and integrity of ground-based augmentation system based on GPS/BDS

NI Yude, LU Lu, LIU Ruihua   

  1. (College of Electronic Information & Automation, CAUC, Tianjin 300300, China)
  • Received:2017-01-22 Revised:2017-03-15 Online:2017-12-27 Published:2017-12-15

摘要: 陆基增强系统(GBAS)的精度和完好性是刻画GBAS所需导航性能(RNP)的两个重要指标。分析了GBAS精度增强所使用的Hatch 载波相位平滑伪距算法,研究了在H0假设和H1假设时的GBAS 完好性,并根据美国海岸警卫队导航中心提供的全球定位系统(GPS)历书数据和实时采集的北斗卫星导航系统(BDS)数据,对GBAS 的精度和完好性增强算法进行了仿真实验。实验表明,基于GPS 或BDS 单星座以及GPS/BDS双星座的GBAS 精度和完好性均能满足I 类(CAT I)精密进近的要求,且双星座环境下的GBAS 精度和完好性要优于单星座相应的性能。

关键词: GBAS, 精度, 完好性, GPS, BDS

Abstract: The accuracy and integrity of GBAS (ground-based augmentation system)are two important indices to describethe RNP (required navigation performance)of GBAS. The Hatch carrier phase smoothing pseudorange algorithm for GBAS accuracy enhancement is analyzed and the integrity of GBAS in H0 and H1 hypotheses is studied. Based on GPSdata provided by US CoastGuard Navigation Center and real-time data of BDS (Beidou navigation satellite system), the simulation of GBAS accuracy and integrity enhancing algorithm are carried out. Experiment results show that the accuracy and integrity of GBAS based on GPS or BDS single constellation and GPS/BDS double constellations can meet the requirement of CAT I precision approach, and GBAS accuracy and integrity in double constellations environment are better than those of single constellation corresponding performance.

Key words: GBAS, accuracy, integrit, GPS, BDS

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