Volume 48 Issue 1
Jan.  2023
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MI Xiaolong, YUAN Yunbin, ZHANG Baocheng. RTK Positioning Performance Analysis for Combined BDS-3 and Galileo[J]. Geomatics and Information Science of Wuhan University, 2023, 48(1): 113-118. DOI: 10.13203/j.whugis20200483
Citation: MI Xiaolong, YUAN Yunbin, ZHANG Baocheng. RTK Positioning Performance Analysis for Combined BDS-3 and Galileo[J]. Geomatics and Information Science of Wuhan University, 2023, 48(1): 113-118. DOI: 10.13203/j.whugis20200483
shu

RTK Positioning Performance Analysis for Combined BDS-3 and Galileo

  • 1.

    State Key Laboratory of Geodesy and Earth' s Dynamics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, China

  • 2.

    University of Chinese Academy of Sciences, Beijing 100049, China

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  • Received Date: September 27, 2022
  • Available Online: February 07, 2023
  • Published Date: January 04, 2023
    Graphical Abstract
    • Abstract
  •   Objectives  BeiDou-3 navigation satellite system (BDS-3) has been fully completed and provides reliable positioning, navigation, and timing services to global users. In order to achieve compatibility and interoperability with other global navigation satellite systems (GNSS), B1C and B2a signals have been modulated by BDS-3 based on BDS-2, which enable frequency multiplexing with E1 and E5a signals of Galileo. The inter-system biases (ISBs) are important for the fusion processing of different GNSS.
      Methods  This paper proposes an ISB estimation and application model based on the single-differenced observations and analyzes the ISBs between the overlapping frequencies of BDS-3 and Galileo. Based on several receivers of the new trackable BDS-3 signals, the characteristics of ISBs between BDS-3 and Galileo are revealed, and the real-time kinematic (RTK) positioning performance of BDS-3 and Galileo is analyzed.
      Results  The results show that the ISBs of B1C-E1 and B2a-E5a exist in different types of receivers but not in the same type of receivers. In addition, compared with BDS-3-only and Galileo-only, the combination of BDS-3 and Galileo has an improvement of more than 10% in both the success rate of ambiguity resolution and positioning accuracy.
      Conclusions  The multi-constellation RTK positioning performance with the introduction of ISBs is more advantageous than that of a single constellation.
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    • References (22)
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