As the pseudorange differential positioning accuracy of single base station decreases with the increase of differential measurement residual errors, it is difficult to realize decimeter-level positioning in long-range real-time positioning. In this study, we propose a decimeter-level pseudorange positioning approach that combines multiple global navigation satellite system (multi-GNSS) and multi-base stations into an enhanced positioning solution to improve the positioning performance. The approach calculates the pseudorange corrections based on multi-GNSS and multi-base stations, and generates one fused pseudorange correction for rover by different interpolation models. The fused pseudorange correction is broadcasted to rover, and the measurements of rover are modified for the final positioning. The experiments based on Hong Kong SatRef network are carried out and the results have shown that the proposed method can achieve decimeter-level positioning accuracy in the medium baseline case. The positioning accuracy can be affected by the interpolation model and the number of base stations. The increase number of base stations can effectively improve the positioning accuracy.


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    Title :

    Decimeter-Level Pseudorange Differential Positioning Based on Hong Kong SatRef Network


    Additional title:

    Lect. Notes Electrical Eng.


    Contributors:
    Yan, Liang (editor) / Duan, Haibin (editor) / Yu, Xiang (editor) / Li, Hui (author) / Wang, Renlong (author) / Li, Nan (author) / Feng, Weinan (author) / Zhao, Lin (author)


    Publication date :

    2021-10-30


    Size :

    12 pages





    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English





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