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- W4386989441 abstract "Multipath and non-light-of-sight (NLOS) reception greatly deteriorate the GNSS positioning accuracy in urban areas. Currently, most of the attempts using machine learning in this area focus on signal status prediction (LOS, multipath, NLOS). This paper exploits the capability of deep learning in multipath/NLOS mitigation. A new input feature, the single-differenced residual map is proposed, which has a high correlation with the user location and is very effective in multipath/NLOS mitigation. Combining the domain knowledge in GNSS, features of residual maps from different satellites are extracted by the proposed network and generate the heat map to indicate the user location. The proposed network can significantly improve the positioning accuracy of 84% of the epochs in the dense urban to 5-meter level. In addition, our network has a superior generalization ability, reducing the error of 90% of the epochs to 7 meter level in a new scenario." @default.
- W4386989441 created "2023-09-24" @default.
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- W4386989441 date "2023-11-01" @default.
- W4386989441 modified "2023-10-09" @default.
- W4386989441 title "PositionNet: CNN-based GNSS Positioning in Urban Areas with Residual Maps" @default.
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- W4386989441 doi "https://doi.org/10.1016/j.asoc.2023.110882" @default.
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