导航卫星精密定轨与时间同步技术进展
作者:
作者单位:

(1.中国科学院上海天文台上海200030;2.北京卫星导航中心北京100092;3.中国人民解放军国防大学北京100091)

作者简介:

通讯作者:

中图分类号:

基金项目:

国家自然科学基金项目(11573035、41574029)、中国科学院青年创新促进会项目(2016242)资助


Status of Satellite Orbit Determination and Time Synchronization Technology for Global Navigation Satellites System
Author:
Affiliation:

1. Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030;2. Beijing Satellite Navigation Center, Beijing 100092;3. National Defenses University, Beijing 100091;

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    全球卫星导航系统(Global Navigation Satellite System, GNSS)通过播发卫星钟差和精密轨道信息实现时间和空间基准信息向导航用户的传递. 随着高精度原子钟等导航卫星载荷、星间链路等天基/地基监测手段以及数据处理方法等技术的不断更新, 卫星轨道和钟差产品的精度和实时性也逐步提升. 2018年12月, 北斗三号卫星导航系统正式开通, 为``一带一路'国家提供实时高精度、高可靠的基本导航定位服务. 综述了北斗导航系统从北斗二号区域系统到北斗三号全球系统精密定轨与时间同步处理面临的困难和挑战, 针对上述问题, 阐述了北斗运行控制系统的解决途径和实现指标. 与GPS等其他GNSS系统进行比较, 分析了不同导航系统技术特点. 最后展望了精密定轨与时间同步技术未来的发展路线图, 为更高精度的GNSS导航定位授时服务提供参考.

    Abstract:

    In the form of satellite ephemerides and clock parameters, the information of space datum and system time of one global navigation satellite system (GNSS) is transferred to users. With the continuously updating of satellite payload such as high precision atomic clocks, monitoring and tracking techniques such as inter-satellite links, and data processing techniques, accuracy and real-time performance of satellite ephemerides and clock products are steadily improved. Starting from December 27th, 2018, BeiDou Navigation System 3, or BDS-3 has been providing accurate and reliable basic positioning, navigation, and timing (PNT) services to the users in the countries within the ``one belt and one road'. This paper summarizes the faced challenges of precise orbit determination and time synchronization and specific solutions sought from the regional BDS-2 system to BDS-3 global system at the control segment. It is interesting to compare BDS with other GNSS systems in terms of technical characteristics. Finally, aiming at higher accuracy and more reliable PNT services, the road map of precise orbit determination and time synchronization technique for next generation navigation systems is discussed, which will be the global navigation satellite systems with higher accuracy.

    参考文献
    相似文献
    引证文献
引用本文

周善石,胡小工,刘利,何峰,唐成盼,潘军洋.导航卫星精密定轨与时间同步技术进展[J].天文学报,2019,60(4):57-66.

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2019-02-02
  • 最后修改日期:2019-04-11
  • 录用日期:
  • 在线发布日期: 2019-09-12
  • 出版日期: