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Earth, Planets and Space
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Volume 52 Supplement 10

Special Issue: Application of GPS and other space geodetic techniques to Earth Sciences (1)

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Development and assessment of a medium-range real-time kinematic GPS algorithm using an ionospheric information filter

Earth, Planets and Space volume 52, pages 783–788 (2000)Cite this article

Abstract

The key requirement of centimeter-level real-time kinematic (RTK) positioning using the Global Positioning System (GPS) relies on the ability to fast and accurately determine the ambiguities of carrier-phase observations to their inherent integer values. In addition, the identification must be completed on the fly since the remote receiver is constantly in motion. The Kalman filter-based algorithm described in this paper uses an ionospheric information filter to perform on-the-fly phase ambiguity resolution for high precision RTK applications. Experiments based on 16 independent test baselines ranging from 10–50 km in length indicate that the algorithm can reliably achieve centimeter-level positioning accuracy, provided that a small enough threshold value for ambiguity identification is pre-defined and that sufficient geometry change in the GPS constellation is observed. Experimental results also show that the convergence (initialization) time for ambiguity resolution is linearly proportional to instantaneous baseline length, and the slope of the regression line increases with tighter ambiguity identification criteria.

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Authors and Affiliations

  1. Department of Surveying Engineering, National Cheng Kung University, Tainan, Taiwan

    Ming Yang & Chin-Hsien Tang

  2. Satellite Geoinformatics Research Center, National Cheng Kung University, Tainan, Taiwan

    Ting-To Yu

Authors
  1. Ming Yang
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  2. Chin-Hsien Tang
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  3. Ting-To Yu
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Correspondence to Ming Yang.

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Yang, M., Tang, CH. & Yu, TT. Development and assessment of a medium-range real-time kinematic GPS algorithm using an ionospheric information filter. Earth Planet Sp 52, 783–788 (2000). https://doi.org/10.1186/BF03352282

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  • DOI: https://doi.org/10.1186/BF03352282

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