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Journal of Applied Geodesy

Editor-in-Chief: Kahmen, Heribert / Rizos, Chris


CiteScore 2018: 1.61

SCImago Journal Rank (SJR) 2018: 0.532
Source Normalized Impact per Paper (SNIP) 2018: 1.064

Online
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1862-9024
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Volume 13, Issue 1

Issues

Accounting for the differential inter-system bias (DISB) of code observation in GPS+BDS positioning

Xiang Cao
  • School of Instrument Science and Engineering, 12579 Southeast University, Nanjing 210096, China
  • Nanjing Institute of Measurement and Testing Technology, Nanjing 210049, China
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/ Qing Wang
  • Corresponding author
  • School of Instrument Science and Engineering, 12579 Southeast University, Nanjing 210096, China
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/ Chengfa Gao / Jie Zhang
Published Online: 2018-08-30 | DOI: https://doi.org/10.1515/jag-2018-0025

Abstract

If the associated differential inter-system biases (DISBs) are priori known, only one common reference satellite is sufficient, which is called the inter-system model. The inter-system model can help to maximize the redundancy of the positioning model, and thus can improve the positioning performance, especially in harsh environment. However, in practice use not all receivers can be calibrated with DISBs in advance. In this paper, taking combined GPS and BDS pseudorange positioning as the example, we compare three positioning models and their positioning performance. One is traditional intra-system model, and the other two belongs to the inter-system models, i. e. the model with calibration of DISB and the model with real-time estimation of DISB parameter. Positioning performance using the three models is evaluated with simulated obstructed environments. It will be shown that besides the model with calibration of DISB, the model with real-time estimation of DISB parameter can also effectively improve positioning accuracy and reliability compared with the traditional intra-system model, especially for the severely obstructed environment with only a few satellites observed. When no more than 7 satellites visible, the positioning accuracies in each directions can be improved by no less than 15 %. The proposed model can be used alternatively when no priori DISB calibration is available.

Keywords: GPS+BDS; Differential inter-system biases (DISBs); Real-time estimation; Pseudorange positioning

References

  • [1]

    Tegedor J, Øvstedal O, Vigen E. Precise orbit determination and point positioning using GPS, Glonass, Galileo and BeiDou. J Geod Sci 2014, 4, 65–73.Google Scholar

  • [2]

    Li X, Ge M, Dai X, et al. Accuracy and reliability of multi-GNSS real-time precise positioning: GPS, GLONASS, BeiDou, and Galileo. J Geod 2015, 89, 607–635.CrossrefGoogle Scholar

  • [3]

    Gao W, Gao C, Pan S. A method of GPS/BDS/GLONASS combined RTK positioning for middle-long baseline with partial ambiguity resolution. Surv Rev 2017, 49, 212–220.CrossrefWeb of ScienceGoogle Scholar

  • [4]

    Pan S, Meng X, Gao W, Wang S, Dodson, A. A new approach for optimizing GNSS positioning performance in harsh observation environments. J Navigation 2014, 67, 1029–1048.CrossrefGoogle Scholar

  • [5]

    Julien O, Alves P, Cannon ME, Zhang W. A tightly coupled GPS/GALILEO combination for improved ambiguity resolution. Proc of the ION GNSS 2003 European navigation conference, Graz, Austria, 2003.Google Scholar

  • [6]

    Li G, Wu J, Zhao C, Tian Y. Double differencing within GNSS constellations. GPS Solut 2017, 21, 1161–1177.Web of ScienceCrossrefGoogle Scholar

  • [7]

    Odijk D, Nadarajah N, Zaminpardaz S, Teunissen PJG. GPS, Galileo, QZSS and IRNSS differential ISBs: estimation and application. GPS Solut 2016, 21, 439–450.Web of ScienceGoogle Scholar

  • [8]

    Odijk D, Teunissen PJG. Characterization of between-receiver GPS-Galileo inter-system biases and their effect on mixed ambiguity resolution. GPS Solut 2013, 17, 521–533.CrossrefWeb of ScienceGoogle Scholar

  • [9]

    Odijk D, Teunissen PJG. Estimation of differential intersystem biases between the overlapping frequencies of GPS, Galileo, BeiDou and QZSS. Proc of 4th International colloquium scientific and fundamental aspects of the Galileo programme, 4–6 December, Prague, Czech Republic, 2013.Google Scholar

  • [10]

    Odolinski R, Teunissen PJG, Odijk D. Combined BDS, Galileo, QZSS and GPS single-frequency RTK. GPS Solut 2015, 19, 151–163.Web of ScienceCrossrefGoogle Scholar

  • [11]

    Paziewski J, Wielgosz P. Accounting for Galileo-GPS intersystem biases in precise satellite positioning. J Geod 2015, 89, 81–93.CrossrefGoogle Scholar

  • [12]

    Liu H, Shu B, Xu L, Qian C, Zhang R, Zhang M. Accounting for inter-system bias in DGNSS positioning with GPS/GLONASS/BDS/Galileo. J Navigation 2017, 70, 686–698.CrossrefWeb of ScienceGoogle Scholar

  • [13]

    Tian Y, Ge M, Neitzel F, Zhu J. Particle filter-based estimation of inter-system phase bias for real-time integer ambiguity resolution. GPS Solut 2017, 21, 949–961.Web of ScienceCrossrefGoogle Scholar

  • [14]

    Gao W, Meng X, Gao C, Pan S, Wang D. Combined GPS and BDS for single-frequency continuous RTK positioning through real-time estimation of differential inter-system biases. GPS Solut 2018, 22, 20, https://doi.org/10.1007/s10291-017-0687-5.Web of ScienceCrossrefGoogle Scholar

  • [15]

    Deng C, Tang W, Liu J, Shi C. Reliable single-epoch ambiguity resolution for short baselines using combined GPS/BeiDou system. GPS Solut 2014, 18, 375–386.Web of ScienceCrossrefGoogle Scholar

  • [16]

    Li J, Yang Y, Xu J, He H, Guo H, Wang A. Performance analysis of single-epoch dual-frequency RTK by BeiDou navigation satellite system. Sun J et al. (eds) China satellite navigation conference (CSNC) proceedings, 2013, volume 245 of Lecture notes in electrical engineering, Springer-Verlag, Berlin, 133–143.Google Scholar

About the article

Received: 2018-07-09

Accepted: 2018-08-14

Published Online: 2018-08-30

Published in Print: 2019-01-28


Funding Source: National Natural Science Foundation of China

Award identifier / Grant number: 41574026

Funding Source: Government of Jiangsu Province

Award identifier / Grant number: BE2016176

This work is partially supported by the National Natural Science Foundation of China (Grant No. 41574026) and the Primary Research and Development Plan of Jiangsu Province (Grant No. BE2016176).


Citation Information: Journal of Applied Geodesy, Volume 13, Issue 1, Pages 63–68, ISSN (Online) 1862-9024, ISSN (Print) 1862-9016, DOI: https://doi.org/10.1515/jag-2018-0025.

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