Comparison Analysis on the Accuracy of Galileo PPP Using Different Frequency Combinations in Europe

by Jia Song, Lewen Zhao
Published 2021-10-01

Performance Evaluation of Troposphere Estimated from Galileo-Only Multi-Frequency Observations

by Lewen Zhao, Pavel Václavovic, Jan Douša
Published 2020-01-01

An Improved Strategy for Real-Time Troposphere Estimation and Its Application in the Severe Weather Event Monitoring

by Lewen Zhao, Mingxuan Cui, Jia Song
Published 2022-12-01

Accuracy Evaluation of Ionospheric Delay from Multi-Scale Reference Networks and Its Augmentation to PPP during Low Solar Activity

by Lewen Zhao, Jan Douša, Pavel Václavovic
Published 2021-07-01

New Adaptable All-in-One Strategy for Estimating Advanced Tropospheric Parameters and Using Real-Time Orbits and Clocks

by Jan Douša, Pavel Václavovic, Lewen Zhao, Michal Kačmařík
Published 2018-02-01

Assessment of the Real-Time and Rapid Precise Point Positioning Performance Using Geodetic and Low-Cost GNSS Receivers

by Mengmeng Chen, Lewen Zhao, Wei Zhai, Yifei Lv, Shuanggen Jin
Published 2024-04-01

New Supplementary Photography Methods after the Anomalous of Ground Control Points in UAV Structure-from-Motion Photogrammetry

by Jia Yang, Xiaopeng Li, Lei Luo, Lewen Zhao, Juan Wei, Teng Ma
Published 2022-04-01