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Carrier phase multipath mitigation for BeiDou navigation satellite system

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Abstract

As is true of GPS, multipath disturbance is a limiting factor for further improvements in BDS high precision positioning applications. We investigate the characteristics of multipath errors and multipath mitigation for BDS geostationary earth orbit, inclined geosynchronous orbit and medium earth orbit satellites according to their orbital repeat periods. We argue that multipath errors can be mitigated using models extracted from a previous period since there is a strong agreement correlation in the multipath errors between subsequent periods. A multipath mitigation method, which is based on observation domain filtering and considers the repeat period of every satellite independently, was applied. The application of the proposed method shows that BDS positioning precision was improved by about 56, 48, and 48 % to 1.90, 1.28, and 4.37 mm in the north, east, and up components. After resolving BDS carrier phase multipath error, the positioning precision of the combined GPS&BDS with multipath correction reached to 0.95, 0.92, and 2.31 mm in the north, east, and up components that were more precise than either the GPS or BDS system alone. The more accurate and reliable precision obtained from the combined system after applying multipath mitigation method, would greatly contribute to high-performance precision deformation monitoring and seismological studies.

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Acknowledgments

Thanks are due to Shilai Cheng for valuable discussion. The authors also thank anonymous reviewers for their suggestions which significantly improved the quality of the manuscript. This work is supported by National Natural Science Foundation of China (No. 41074008), National 973 Program of China (No. 2012CB957701), Research Fund for the Doctoral Program of Higher Education of China (No. 20120141110025), Non-profit Industry Financial Program of MWR (No. 201401072).

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Authors and Affiliations

  1. GNSS Research Center, Wuhan University, No. 129 Luoyu Road, Wuhan, 430079, China

    Shirong Ye, Dezhong Chen, Yanyan Liu, Peng Jiang, Weiming Tang & Pengfei Xia

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  1. Shirong Ye
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  2. Dezhong Chen
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  3. Yanyan Liu
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  4. Peng Jiang
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  5. Weiming Tang
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  6. Pengfei Xia
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Correspondence to Dezhong Chen or Yanyan Liu.

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Ye, S., Chen, D., Liu, Y. et al. Carrier phase multipath mitigation for BeiDou navigation satellite system. GPS Solut 19, 545–557 (2015). https://doi.org/10.1007/s10291-014-0409-1

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