GNSS

Fast and precise GNSS RTK positioning with ionosphere-constrained weighted least squares quadratic programming
Achieving fast and precise real-time kinematic (RTK) positioning depends on effective carrier phase integer ambiguity resolution (IAR), …
Xiaolong Mi, Xingyu Chen, Robert Odolinski, Yuyan Wang, Wu Chen, Yunbin Yuan
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Improving GNSS precise point positioning with tropospheric constraints from data-driven numerical weather prediction model
Accurate a priori tropospheric knowledge is advantageous for Global Navigation Satellite System (GNSS) precise point positioning (PPP), …
Yuanfan Deng, Wu Chen, Junsheng Ding, Ahmed El-Mowafy, Duojie Weng, Long Tang, Lei Bai, Xiaolong Mi*
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Effect of Constraining a Limited Number of Slant Ionospheric Corrections in PPP and an Improved Partial Tight-Constraining Algorithm
With external ionospheric corrections, precise point positioning solutions can be augmented with proper constraints, enabling fast …
Jiahuan Hu, Yao Shi, Pan Li*, Wu Chen, Long Tang, Feng Zhou, Xiaolong Mi, Sunil Bisnath
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GNSS Positioning Aided with Pedestrian Dead Reckoning (PDR) in Urban Areas
Urban environments, characterized by dense high-rise buildings and narrow streets, present substantial challenges to GNSS positioning …
Huan Luo, Duojie Weng*, Ahmed Mansour, Xiaolong Mi, Yang Yang, Wu Chen
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Bridging missing GNSS phase measurements through cycle slip detection for improved smartphone positioning
Smartphone-related location-based services (LBSs) are among the most frequently used applications in daily life. The accuracy of …
Jiahuan Hu, Wu Chen, Pan Li, Xiaolong Mi, Kai Zheng, Long Tang, Wanke Liu, Jingkai Yuan, Sunil Bisnath
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Multi-constellation instantaneous single difference triple-carrier ambiguity resolution in urban environments
The demand for high-precision real-time positioning is critical for applications such as autonomous vehicles, urban planning, and …
Qi Cheng, Wu Chen, Junhui Wang, Xiaolong Mi, Yang Yang, Rui Sun
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A Novel Optimized Hybrid VMD-PCA-XGBoost Model for Forecasting Precipitation: Exemplified by the Beijing-Tianjin-Hebei Study Region in China
Extreme precipitation events pose significant challenges to societal infrastructure and environmental stability, particularly in …
Qiaoli Kong, Qian Li, Qi Bai, Xiaolong Mi*, Joseph Awange, Shi Wang, Yi Yang, Guoli Bo
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A Novel Network RTK Technique for Mobile Platforms: Extending High-Precision Positioning to Offshore Environments
Network Real-Time Kinematic (NRTK) positioning is widely recognized for centimetre-level accuracy and operational efficiency, but …
Wu Chen, Junsheng Ding, Yuyan Wang, Xiaolong Mi, Tong Liu
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A new high-precision short-term ionospheric TEC prediction model based on the DBO-BiLSTM algorithm: A case study of Europe
In order to achieve high accuracy of ionospheric total electron content (TEC) short-term prediction for Europe, a novel hybrid deep …
Qiaoli Kong*, Yunqing Huang, Xiaolong Mi, Qi Bai, Jingwei Han, Yanfei Chen, Shi Wang
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Array-Aided GNSS for Precise Determination of Ionospheric and Tropospheric Delays With Integer Ambiguity Resolution
Ground-based global navigation satellite system (GNSS) observations are essential for acquiring high-precision ionospheric and …
Xingyu Chen, Xiaolong Mi*, Yunbin Yuan, Ahmed El-Mowafy, Hongjin Xu, Wenwu Ding
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