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China Satellite Navigation Conference (CSNC) 2012 Proceedings pp 381–394Cite as

Medium-Range Kinematic Positioning Constraint by Ionospheric Pseudo-Observation with Elevation-Dependent Weight

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  • First Online:

  • 2014 Accesses

Part of the book series: Lecture Notes in Electrical Engineering ((LNEE,volume 159))

Abstract

The performance of RTK (real time kinematic positioning) is much degraded with increasing distance between receivers due to the presence of distance-dependent GPS errors, notably ionosphere and troposphere refraction. In this paper, we investigate the methodology for medium-range kinematic positioning constraint by ionosphere pseudo-observation with elevation-dependent weight. The ionospheric delays of double differenced (DD) observations are treated as pseudo-observations having a priori values and respective weights. This means that the ionospheric delays are modeled as the unknown parameters with prior stochastic information which is expressed as the form of ionospheric pseudo-observations. The weight of ionospheric pseudo-observation is determined according to satellite elevation. Moreover, the relative variation constraint to the DD ionospheric delay between consecutive epochs is also taken into account. A field experiment is conducted to verify and demonstrate the proposed method. The dual frequency GPS data were collected with sampling interval of 1 s in two CORS stations spacing 94.6 km. The results demonstrate that the presented method can provide high-quality DD ionospheric delay estimates instantaneously, which can improve the speed and reliability of the Ambiguity Resolution (AR). Furthermore, medium-range (up to 100 km) RTK solution precision achieves centimeters in all components. The precision of the horizontal component is less than 2 cm, horizontal component is about 3 cm.

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References

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Acknowledgments

This work is supported by the National Natural Science Funds of China (grant 40874016, 41074018) and partially supported by Kwang-Hua Fund for College of Civil Engineering, Tongji University.

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Authors and Affiliations

  1. Department of Surveying and Geo-informatics Engineering, Tongji University, 20092, Shanghai, China

    Yihe Li & Yunzhong Shen

  2. Center for Spatial Information Science and Sustainable Development, Tongji University, 20092, Shanghai, China

    Yihe Li

Authors
  1. Yihe Li
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  2. Yunzhong Shen
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Corresponding author

Correspondence to Yihe Li .

Editor information

Editors and Affiliations

  1. , China Aerospace Sci. & Technology Corp., Chinese Academy of Sciences, Beijing, China, People's Republic

    Jiadong Sun

  2. GPS Engineering Res. Center, Wuhan University, Wuhan, 430079, China, People's Republic

    Jingnan Liu

  3. China Natl. Admin. of GNSS & Application, Beijing, China, People's Republic

    Yuanxi Yang

  4. Dengzhuang South Road 9, Beijing, 100094, China, People's Republic

    Shiwei Fan

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© 2012 Springer-Verlag GmbH Berlin Heidelberg

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Li, Y., Shen, Y. (2012). Medium-Range Kinematic Positioning Constraint by Ionospheric Pseudo-Observation with Elevation-Dependent Weight. In: Sun, J., Liu, J., Yang, Y., Fan, S. (eds) China Satellite Navigation Conference (CSNC) 2012 Proceedings. Lecture Notes in Electrical Engineering, vol 159. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-29187-6_38

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  • DOI: https://doi.org/10.1007/978-3-642-29187-6_38

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-29186-9

  • Online ISBN: 978-3-642-29187-6

  • eBook Packages: EngineeringEngineering (R0)

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