Volume 45 Issue 1
Mar.  2025
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Article Navigation >  Chinese Journal of Space Science  > 2025  >  45(1): 235-242 Open Access
YE Shaochun, XU Wenbing, YIN Xiao. Comparison on Real-time Single Point Positioning Performance of Single Beidou/Multi-mode GNSS in Remote Forested Areas (in Chinese). Chinese Journal of Space Science, 2025, 45(1): 235-242 doi: 10.11728/cjss2025.01.2023-0120
Citation: YE Shaochun, XU Wenbing, YIN Xiao. Comparison on Real-time Single Point Positioning Performance of Single Beidou/Multi-mode GNSS in Remote Forested Areas (in Chinese). Chinese Journal of Space Science, 2025, 45(1): 235-242 doi: 10.11728/cjss2025.01.2023-0120
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Comparison on Real-time Single Point Positioning Performance of Single Beidou/Multi-mode GNSS in Remote Forested Areas

doi: 10.11728/cjss2025.01.2023-0120 cstr: 32142.14.cjss.2023-0120

  • College of Environmental and Resource Sciences, Zhejiang Agriculture and Forestry University, Hangzhou 311300

  • Received Date: 2023-10-27
  • Rev Recd Date: 2023-12-29
    • Available Online: 2025-01-10
    Abstract
  • In remote forested areas, reference stations are sparse, making network communication difficult. There are significant multipath effects, causing large cycle slips during observations, making it challenging to achieve high-precision RTK (Real-Time Kinematic) positioning using double-difference methods. Considering the hardware delay introduced by broadcast ephemeris and clock errors, a pseudorange Single-Point Positioning (SPP) model for single Beidou (BDS)/multi-mode Global Navigation Satellite System (GNSS) single-frequency and ionosphere-free combinations is derived. Correction methods for pseudorange hardware delays caused by different system clock error references is introduced. Accuracy is evaluated using measured vehicle dynamic observation data in forested areas, and the achievable positioning accuracy of current satellite navigation is determined based on single-frequency SPP and ionosphere-free SPP in remote forested regions. The results show that under the condition of no correction data from reference stations in the forest area, the plane accuracy of BDS and GPS/Galileo/BDS SPP positioning can reach 2 m. Compared with single-frequency SPP, the plane accuracy of Beidou, GPS/Galileo/BDS ionosphere-free SPP is improved by about 0.5 m and 0.4 m respectively, and the SPP based on the ionosphere-free combination has better positioning performance.

     

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