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Enhanced Agricultural Vehicle Positioning through Ultra-Wideband-Assisted Global Navigation Satellite Systems and Bayesian Integration Techniques

Author

Listed:
  • Kaiting Xie

    (The Faculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming 650500, China)

  • Zhaoguo Zhang

    (The Faculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming 650500, China
    The Faculty of Modern Agricultural Engineering, Kunming University of Science and Technology, Kunming 650500, China)

  • Shiliang Zhu

    (The Faculty of Modern Agricultural Engineering, Kunming University of Science and Technology, Kunming 650500, China)

Abstract

This paper introduces a cooperative positioning algorithm for agricultural vehicles, which uses the relative distance of the workshop to improve the performance of the Global Navigation Satellite Systems (GNSS), to improve the positioning accuracy and stability. Firstly, the extended Kalman filter (EKF) fuses the vehicle motion state data with GNSS observation data to improve the independent GNSS positioning accuracy. Subsequently, vehicle state and observation models are formulated using Bayesian theory, incorporating GNSS/UWB data with UWB tag network ranging and with GNSS positioning data among agricultural vehicles and Inter-Vehicular Ranges (IVRs). This integration addresses the significant drift issue in GNSS elevation positioning by employing a high-dimensional decoupling algorithm, standardizing the discrete elevation data, and improving the data’s continuity and predictability. A particle filter is used to refine the vehicle’s position estimation further. Finally, experiments are carried out to verify the robustness of the proposed algorithm under different working conditions.

Suggested Citation

  • Kaiting Xie & Zhaoguo Zhang & Shiliang Zhu, 2024. "Enhanced Agricultural Vehicle Positioning through Ultra-Wideband-Assisted Global Navigation Satellite Systems and Bayesian Integration Techniques," Agriculture, MDPI, vol. 14(8), pages 1-17, August.
    • Handle: RePEc:gam:jagris:v:14:y:2024:i:8:p:1396-:d:1458833
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    References listed on IDEAS

    as
    1. Wenxuan Guo, 2018. "Application of Geographic Information System and Automated Guidance System in Optimizing Contour and Terrace Farming," Agriculture, MDPI, vol. 8(9), pages 1-13, September.
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