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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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Preprints
https://doi.org/10.5194/angeo-2020-37
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/angeo-2020-37
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

  26 Jun 2020

26 Jun 2020

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A revised version of this preprint was accepted for the journal ANGEO and is expected to appear here in due course.

Epoch-by-epoch estimation and analysis of BDS receiver differential code biases with the additional BDS-3 observations

Qisheng Wang1,2,3, Shuanggen Jin2,3,4, and Youjian Hu1 Qisheng Wang et al.
  • 1School of Geography and Information Engineering, China University of Geosciences, Wuhan 430074, China
  • 2School of Remote Sensing and Geomatics Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
  • 3Jiangsu Engineering Center for Collaborative Navigation/Positioning and Smart Applications, Nanjing 210044, China
  • 4Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China

Abstract. The differential code bias (DCB) of global navigation satellite systems (GNSS) is an important error source in ionospheric modeling, which was generally estimated as constants every day. However, the receiver DCB may be changing due to the varying space environments and temperatures. In this paper, the receiver DCB of BeiDou Navigation Satellite System (BDS) is estimated as the changing parameter within one day with epoch-by-epoch. The BDS receiver DCBs are analyzed from 30 days of multi-GNSS experiment observations. The comparison of estimated receiver DCB of BDS with the DCB provided by German Aerospace Center (DLR) and Chinese Academy of Sciences (CAS) shows a good agreement. The root mean square (RMS) values of receiver DCB are 0.43 and 0.80 ns with respect to DLR and CAS, respectively. In terms of the intra-day variability of receiver DCB, most of the receiver DCBs show relative stability within one day with the intra-day standard deviation (STD) of less than 1 ns. However, larger fluctuations with more than 2 ns of intra-day receiver DCB are found. Besides, the intra-day stability of receiver DCB calculated by the third-generation BDS (BDS-3) and the second-generation BDS (BDS-2) observations is compared. The result shows that the intra-day stability of BDS-3 receiver DCB is better than that of BDS-2 receiver DCB.

Qisheng Wang et al.

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Qisheng Wang et al.

Qisheng Wang et al.

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Short summary
In this paper, the receiver differential code bias (DCB) of BDS is estimated as the changing parameter within one day with epoch-by-epoch. The intra-day variability of receiver DCB is analyzed from 30 days of multi-GNSS experiment observations. In particular, the intra-day stability of receiver DCB for the BDS-3 and BDS-2 is compared. The result shows that the intra-day stability of BDS-3 receiver DCB is better than that of BDS-2 receiver DCB.
In this paper, the receiver differential code bias (DCB) of BDS is estimated as the changing...
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