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Research ArticleRegular Papers
Open Access

A Station-Specific Ionospheric Modeling Method for the Estimation and Analysis of BeiDou-3 Differential Code Bias Parameters

Ningbo Wang, Zishen Li, Andrzej Krankowski, and Xingliang Huo
NAVIGATION: Journal of the Institute of Navigation March 2022, 69 (1) navi.509; DOI: https://doi.org/10.33012/navi.509
Ningbo Wang
1Aerospace Information Research Institute (AIR), Chinese Academy of Sciences (CAS), Beijing 100094, China
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  • For correspondence: [email protected]
Zishen Li
1Aerospace Information Research Institute (AIR), Chinese Academy of Sciences (CAS), Beijing 100094, China
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Andrzej Krankowski,
2Space Radio-Diagnostics Research Centre, University of Warmia and Mazury in Olsztyn, 10-720 Olsztyn, Poland
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Xingliang Huo
3State Key Laboratory of Geodesy and Earth’s Dynamics, Innovation Academy of Precision Measurement Science and Technology (APM), CAS, Wuhan 430077, China
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  • FIGURE 1
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    FIGURE 1

    Distribution of iGMAS and MGEX stations in support of BeiDou-3 dual-frequency signal tracking. The iGMAS and MGEX receivers are identified by square and circle dots in different colors.

  • FIGURE 2
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    FIGURE 2

    Weekly stability of BeiDou-2 satellite B1I-B3I DCBs generated by GTS-based and MGTS-based local ionospheric modeling methods

  • FIGURE 3
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    FIGURE 3

    Comparison of BeiDou satellite B1I-B3I DCB estimates from the iGMAS-only, MGEX-only, and iGMAS-plus-MGEX solutions; individual satellites are identified by their SVNs.

  • FIGURE 4
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    FIGURE 4

    Comparison of BeiDou-transmitted TGD1 parameters and post-processed B1I-B3I DCBs for January 2019; MGX and COM denote DCB estimates from the MGEX-only and MGEX-plus-iGMAS solutions, respectively.

  • FIGURE 5
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    FIGURE 5

    Monthly averages of BeiDou receiver B1I-B3I DCBs from the iGMAS-plus-MGEX solution

  • FIGURE 6
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    FIGURE 6

    Monthly STD of BeiDou receiver B1I-B3I DCBs at the individual station

  • FIGURE 7
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    FIGURE 7

    Receiver DCB differences generated from the independent BeiDou-2 and BeiDou-3 constellations; iGMAS and MGEX stations depicted on the horizontal axis are sorted by their geographic latitudes.

  • FIGURE 8
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    FIGURE 8

    BeiDou-3 B1Cp-B3I (circle) and B2ap-B3I (square) receiver DCBs in January 2019; different types of iGMAS receivers are depicted in different colors.

  • FIGURE 9
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    FIGURE 9

    Data-pilot biases of BeiDou-3 B1C and B2a signals; the color bars and dots correspond to the post-processed DCBs and transmitted ISCs, respectively.

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    TABLE 1

    Multi-GNSS receivers and BeiDou-3 capable pseudorange measurements within iGMAS and MGEX networks (as of January 2019).

    NetworksManufacturesReceiver typesBeiDou-3 signalsSites
    B1CB1B2aB3
    iGMASCETC-54CETC-54-GMR-4016C1PC2IC5PC6I8
    CETC-54-GMR-4011N/A3
    CETC-20GNSS_GGRN/A7
    UnicoreUB4B0-13478C1DC2IC5DC6I6
    MGEXJavadJAVAD TRE_3/3 DE/G3THC1XC2IC5XC6I30 (9)
    LeicaLEICA GR10/25/30/50N/AC2IN/AC6I33 (0)
    SeptentrioSEPT POLARX4/4TR/5/5TRN/A57 (32)
    TrimbleTRIMBLE NETR9/ALLOYN/A70 (18)
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    TABLE 2

    The day-to-day repeatability as well as weekly and monthly STDs of BeiDou satellite B1I-B3I DCBs from the iGMAS-only (IGM), MGEX-only (MGX), and iGMAS-plus-MGEX (COM) solutions

    ConstellationDay-to-day scatter (ns)Weekly STD (ns)Monthly STD (ns)
    IGMMGXCOMIGMMGXCOMIGMMGXCOM
    BDS-2GEO (5)0.1710.1420.1180.1390.1210.1000.1580.1410.109
    IGSO (7)0.0720.1190.0880.0560.0820.0620.0820.1000.074
    MEO (3)0.1560.1640.1580.1280.1500.1380.1370.1540.131
    BDS-3SIGSO (1)0.1010.1580.0870.0620.1310.0660.0740.1320.065
    BDS-3MEO CAST (10)0.1880.1690.1430.1580.1380.1020.1680.1700.117
    MEO SECM (8)0.1740.1670.1330.1500.1420.1040.1530.1530.109
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    TABLE 3

    Comparison of BeiDou-3 broadcast B1C/B2a-B3I TGDs and post-processed DCBs in January 2019 (unit: ns)

    SatelliteB1Cp-B3IB1Cd-B3IB2ap-B3IB2ad-B3I
    TGDB1CpDCBDCBTGDB2apDCBDCB
    CASTC201 (C19)7.27.18±0.167.25±0.5211.311.25±0.1411.29±0.37
    C202 (C20)14.114.12±0.1413.73±0.4411.511.14±0.1410.81±0.31
    C205 (C22)15.215.20±0.1414.86±0.506.36.23±0.146.29±0.38
    C206 (C21)12.912.97±0.1612.71±0.5311.29.87±0.1510.72±0.32
    C209 (C23)20.820.27±0.1020.25±0.498.48.11±0.107.93±0.42
    C210 (C24)15.214.84±0.1014.14±0.597.87.42±0.097.16±0.35
    C213 (C32)-9.5-9.80±0.19-9.53±0.456.05.95±0.155.67±0.28
    C214 (C33)–15.9–15.77±0.16–16.18±0.50–37.7–37.42±0.29–38.42±0.36
    C218 (C36)–21.2–21.77±0.14–22.05±0.486.76.27±0.105.70±0.40
    C219 (C37)–13.9–14.38±0.14–14.39±0.483.42.55±0.141.64±0.35
    SECMC203 (C27)–4.7–4.38±0.11–4.26±0.43–4.2–3.67±0.08–3.25±0.28
    C204 (C28)0.00.29±0.150.47±0.46–4.3–3.90±0.11–3.76±0.35
    C207 (C29)1.61.97±0.142.01±0.44–4.7–4.16±0.11–3.63±0.32
    C208 (C30)–10.1–9.96±0.10–9.46±0.42–4.9–4.64±0.09–4.42±0.29
    C211 (C26)–2.8–2.16±0.10–1.85±0.46–4.7–4.05±0.11–3.80±0.32
    C212 (C25)–0.5–0.43±0.090.11±0.51–4.6–4.28±0.10–4.16±0.46
    C215 (C35)–3.3–3.02±0.14–3.22±0.50–3.2–2.95±0.10–2.59±0.34
    C216 (C34)–5.2–5.16±0.16–4.535±0.50–4.1–3.72±0.11–3.81±0.34

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NAVIGATION: Journal of the Institute of Navigation: 69 (1)
NAVIGATION: Journal of the Institute of Navigation
Vol. 69, Issue 1
Spring 2022
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A Station-Specific Ionospheric Modeling Method for the Estimation and Analysis of BeiDou-3 Differential Code Bias Parameters
Ningbo Wang, Zishen Li, Andrzej Krankowski,, Xingliang Huo
NAVIGATION: Journal of the Institute of Navigation Mar 2022, 69 (1) navi.509; DOI: 10.33012/navi.509

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A Station-Specific Ionospheric Modeling Method for the Estimation and Analysis of BeiDou-3 Differential Code Bias Parameters
Ningbo Wang, Zishen Li, Andrzej Krankowski,, Xingliang Huo
NAVIGATION: Journal of the Institute of Navigation Mar 2022, 69 (1) navi.509; DOI: 10.33012/navi.509
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Keywords

  • BeiDou-3 global system
  • data-pilot bias
  • differential code bias (DCB)
  • inter-signal correction (ISC)
  • station-specific ionospheric modeling

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