• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Geodesy >Triple-frequency PPP ambiguity resolution with multi-constellation GNSS: BDS and Galileo
【24h】

Triple-frequency PPP ambiguity resolution with multi-constellation GNSS: BDS and Galileo

机译：多星座GNSS的三频PPP模糊度解析：BDS和Galileo

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Multi-constellation GNSS (multi-GNSS) and multi-frequency signals open new prospects for fast ambiguity resolution (AR) of precise point positioning (PPP). Currently, all the BDS and Galileo satellites are capable of transmitting signals on three or more frequencies. In this contribution, we investigate the triple-frequency PPP ambiguity resolution with B1, B2 and B3 observations from BDS satellites and E1, E5a and E5b observations from Galileo satellites and evaluate the contribution of BDS+Galileo combination to triple-frequency PPP AR. The uncalibrated phase delay (UPD) products are estimated based on triple-frequency observations, and the temporal characteristic as well as the residual distributions are analyzed. Our results show that the extra-wide-lane (EWL) and wide-lane (WL) UPDs for BDS and Galileo satellites are both stable during the 30days and the daily narrow-lane (NL) UPD series are also steady with no obvious fluctuation. The Galileo UPDs exhibit better performance than BDS UPDs due to the high-quality observations. It is also interesting to find that the EWL UPD corrections for all Galileo satellites are very close to the zero. With the precise UPD products, the triple-frequency PPP AR with BDS and Galileo observations was implemented in both static and kinematic modes. Compared to the ambiguity-float solution, the performance can be significantly improved by triple-frequency PPP AR with the positioning accuracy improved by 30-70% in both static and kinematic modes. Moreover, the triple-frequency PPP fixed solutions also present better performance than the dual-frequency PPP fixed solutions in terms of time to the first fix and positioning accuracy, especially for the Galileo-only and BDS+Galileo solutions. And the fusion of multi-GNSS (BDS and Galileo) can further improve the position estimations compared to the single system with more satellites and better spatial geometry.
机译：多星座GNSS（multi-GNSS）和多频率信号为精确点定位（PPP）的快速歧义分辨率（AR）开辟了新的前景。当前，所有BDS和Galileo卫星都能够在三个或更多频率上传输信号。在此贡献中，我们使用BDS卫星的B1，B2和B3观测值以及Galileo卫星的E1，E5a和E5b观测值研究三频PPP模糊度分辨率，并评估BDS + Galileo组合对三频PPP AR的贡献。根据三频观测值估算未校准的相位延迟（UPD）乘积，并分析时间特性以及残余分布。我们的结果表明，BDS和伽利略卫星的超宽车道（EWL）和宽车道（WL）UPD在30天期间均稳定，并且每日窄车道（NL）UPD系列也稳定，没有明显波动。由于高质量的观测，伽利略UPD的性能优于BDS UPD。还有趣的是，所有伽利略卫星的EWL UPD校正都非常接近零。使用精确的UPD产品，在静态和运动学模式下都实现了具有BDS和Galileo观测值的三频PPP AR。与模糊浮点解决方案相比，三频PPP AR可以显着提高性能，静态和运动模式下的定位精度都可以提高30-70％。此外，就首次定位和定位精度而言，三频PPP固定解决方案的性能也比双频PPP固定解决方案更好，特别是对于仅伽利略解决方案和BDS +伽利略解决方案而言。与具有更多卫星和更好空间几何的单个系统相比，多GNSS（BDS和Galileo）的融合可以进一步改善位置估计。

著录项

  • 来源
    《Journal of Geodesy》 |2019年第8期|1105-1122|共18页
  • 作者

    Li Xingxing; Li Xin; Liu Gege; Feng Guolong; Yuan Yongqiang; Zhang Keke; Ren Xiaodong;

  • 作者单位

    Wuhan Univ, Sch Geodesy & Geomat, 129 Luoyu Rd, Wuhan 430079, Hubei, Peoples R China|German Res Ctr Geosci GFZ, D-14473 Potsdam, Germany;

    Wuhan Univ, Sch Geodesy & Geomat, 129 Luoyu Rd, Wuhan 430079, Hubei, Peoples R China;

    Wuhan Univ, Sch Geodesy & Geomat, 129 Luoyu Rd, Wuhan 430079, Hubei, Peoples R China;

    Wuhan Univ, Sch Geodesy & Geomat, 129 Luoyu Rd, Wuhan 430079, Hubei, Peoples R China;

    Wuhan Univ, Sch Geodesy & Geomat, 129 Luoyu Rd, Wuhan 430079, Hubei, Peoples R China;

    Wuhan Univ, Sch Geodesy & Geomat, 129 Luoyu Rd, Wuhan 430079, Hubei, Peoples R China;

    Wuhan Univ, Sch Geodesy & Geomat, 129 Luoyu Rd, Wuhan 430079, Hubei, Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Precise point positioning; Uncalibrated phase delay; Ambiguity resolution; Multi-GNSS; Multi-frequency;

    机译：精确的点定位;未校准的相位延迟;模糊度分辨率;Multi-GNSS;多频率;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号