数据与计算发展前沿 ›› 2022, Vol. 4 ›› Issue (4): 81-87.

CSTR: 32002.14.jfdc.CN10-1649/TP.2022.04.008

doi: 10.11871/jfdc.issn.2096-742X.2022.04.008

• 专刊: 北斗导航数据处理 • 上一篇    下一篇

PPP-RTK服务端卫星钟差估值性能分析

陈永昌1,*(),马广庆2,张京奎1,盛传贞1   

  1. 1.中国电子科技集团公司第五十四研究所,河北 石家庄 050002
    2.河北省地震局,河北 石家庄 050021
  • 收稿日期:2022-03-29 出版日期:2022-08-20 发布日期:2022-08-10
  • 通讯作者: 陈永昌
  • 作者简介:陈永昌,中国电子科技集团公司第五十四研究所,博士,工程师,主要研究方向为GNSS精密钟差估计、PPP-RTK等方面高精度数据处理。
    本文中负责实验设计、文稿撰写等工作。
    CHEN Yongchang, Ph.D., is an engineer at the CETC 54th Research Institute. His research interests include GNSS precise clock offset estimation, PPP-RTK and, other aspects of high-precision data processing.
    In this work, he is responsible for the experimental design and manuscript writing.
    E-mail: cycsalad@126.com
  • 基金资助:
    河北省重点研发计划项目“融合北斗PPP-RTK与微惯性传感器的地震位移实时智能监测技术及设备研发和示范应用”(21375411D);中国电子科技集团公司技术创新基金“天地协同PNT网络关键技术研究”(BAX20684X010);中央引导地方资金项目“北斗+低轨全球瞬时高精度定位终端关键技术研究”(206Z0303G)

Performance Analysis of Satellite Clock Offset Generated by PPP-RTK Server End

CHEN Yongchang1,*(),MA Guangqing2,ZHANG Jingkui1,SHENG Chuanzhen1   

  1. 1. CETC 54th Research Institute, State Key Laboratory of Satellite Navigation System and Equipment Technology, Shijiazhuang, Hebei 050002, China
    2. Hebei Earthquake Agency, Shijiazhuang, Hebei 050002, China
  • Received:2022-03-29 Online:2022-08-20 Published:2022-08-10
  • Contact: CHEN Yongchang

摘要:

【目的】针对实时动态精密单点定位(precise point positioning- real-time kinematic, PPP-RTK)技术几何固定模型解算的卫星钟差的性能,开展相关实验,评估此类卫星钟差估值在传统GNSS应用中的能力水平。【方法】通过将解算的钟差与国际GNSS服务(international GNSS service, IGS)精密钟差进行比较,并将其应用于动态精密单点定位(precise point positioning, PPP),以评估钟差估值的性能。【结果】评估了该模型逐历元策略解算的卫星钟差精度,证实其能够满足传统GNSS应用亚米级精度的增强信息需求。【结论】PPP-RTK作为一项新的高精度定位技术,其服务端能够提供丰富的增强信息。卫星钟差作为该技术几何固定模型提供的增强信息之一,不仅能够服务于PPP-RTK的用户端,而且能够兼容传统需要卫星钟差的应用。

关键词: GNSS, 卫星钟差, PPP-RTK, 精密单点定位, 几何固定模型

Abstract:

[Objective] Aiming at the performance of the satellite clock offset calculated by precise point positioning- real-time kinematic (PPP-RTK) geometry-fixed model, relevant experiments were carried out to test the capability level of satellite clock offset estimates in traditional GNSS applications. [Methods] The performance of clock offset estimates is evaluated by comparing the solved clock offsets with the international GNSS service (IGS) precise clock products and applying it to kinematic precise point positioning (PPP). [Results] The accuracy of the satellite clock offsets calculated by the epoch-by-epoch strategy of the geometry-fixed model is evaluated, and it is verified that the accuracy can meet the enhanced information requirements of sub-meter-level accuracy of traditional GNSS applications. [Conclusions] PPP-RTK is a new high-precision positioning technology, and it can provide various augmented information. As one of the augmented information generated by the geometry-fixed model of this technology, the satellite clock offset can not only serve the end-user of PPP-RTK but also be compatible with traditional applications that require satellite clock offset.

Key words: GNSS, satellite clock offset, PPP-RTK, precise point positioning, geometry fixed model