Multi-GNSS PPP/INS tightly coupled integration with atmospheric augmentation and its application in urban vehicle navigation

S Gu, C Dai, W Fang, F Zheng, Y Wang, Q Zhang… - Journal of …, 2021 - Springer
Precise point positioning (PPP) is receiving increasing interest due to its cost-effectiveness,
global coverage and high accuracy. However, its application in the urban environment is still …

[HTML][HTML] 不同纬度区域电离层增强PPP-RTK 性能分析

宋伟伟, 何成鹏, 辜声峰 - 武汉大学学报(信息科学版), 2021 - ch.whu.edu.cn
收敛速度慢一直是限制精密单点定位(precise point positioning, PPP) 发展的重要因素.
研究表明, 通过高精度电离层延迟改正, 进而实现精密单点定位实时动态(PPP-real time …

Research progress of geodesy in China (2019—2023)

D Yamin, J Tao, Y Yuanxi, SUN Heping… - Acta Geodaetica et …, 2023 - xb.chinasmp.com
From July 11 to 20, 2023, the 28th International Union of Geodesy and Geophysics (IUGG)
general assembly was held in Berlin, Germany. According to the tradition of IUGG, the …

Amplitude scintillation index derived from C/N0 measurements released by common geodetic GNSS receivers operating at 1 Hz

X Luo, S Gu, Y Lou, L Cai, Z Liu - Journal of Geodesy, 2020 - Springer
Two widely used scintillation indexes S_ 4 S 4 and φ σ φ are generated by dedicated
ionospheric scintillation monitoring receivers (ISMRs), which typically have 50-Hz temporal …

Integration of multi-GNSS PPP-RTK/INS/vision with a cascading kalman filter for vehicle navigation in urban areas

S Gu, C Dai, F Mao, W Fang - Remote Sensing, 2022 - mdpi.com
Precise point positioning (PPP) has received much attention in recent years for its low cost,
high accuracy, and global coverage. Nowadays, PPP with ambiguity resolution and …

Quasi-4-dimension ionospheric modeling and its application in PPP

S Gu, C Gan, C He, H Lyu, M Hernandez-Pajares… - Satellite …, 2022 - Springer
Ionospheric delay modeling is not only important for Global Navigation Satellite System
(GNSS) based space weather study and monitoring, but also an efficient tool to speed up the …

Single-frequency PPP models: analytical and numerical comparison

B Li, N Zang, H Ge, Y Shen - Journal of Geodesy, 2019 - Springer
Ionosphere delay is a key factor in the single-frequency Precise Point Positioning (SFPPP).
In tradition, two SFPPP models are applied, ie, ionosphere-corrected (IC) and ionosphere …

Modeling wide-area tropospheric delay corrections for fast PPP ambiguity resolution

B Cui, J Wang, P Li, M Ge, H Schuh - GPS Solutions, 2022 - Springer
The performance of precise point positioning (PPP) has been significantly improved thanks
to the continuous improvements in satellite orbit, clock, and ambiguity resolution (AR) …

Satellite's differential code bias conversion model between different IGS clock products using uncombined BDS-3 multi-frequency data

J Zhao, L Fan, S Guo, C Shi - Journal of Geodesy, 2024 - Springer
Differential code bias (DCB) is widely used to achieve consistency between global
navigation satellite system (GNSS) observations at different frequencies. Since a strong …

BDS-3 differential code bias estimation with undifferenced uncombined model based on triple-frequency observation

S Gu, YT Wang, Q Zhao, F Zheng, X Gong - Journal of Geodesy, 2020 - Springer
Since 2015, the new generation global BDS system, ie, BDS-3, has started its development
with five experimental satellites demonstration system and has announced its initial global …