PPP models and performances from single-to quad-frequency BDS observations

S **, K Su - Satellite Navigation, 2020 - Springer
Abstract Nowadays, China BeiDou Navigation Satellite System (BDS) has been developed
well and provided global services with highly precise positioning, navigation and timing …

The comparison of predicting storm-time ionospheric TEC by three methods: ARIMA, LSTM, and Seq2Seq

R Tang, F Zeng, Z Chen, JS Wang, CM Huang, Z Wu - Atmosphere, 2020 - mdpi.com
Ionospheric structure usually changes dramatically during a strong geomagnetic storm
period, which will significantly affect the short-wave communication and satellite navigation …

Validation of GNSS-derived global ionosphere maps for different solar activity levels: Case studies for years 2014 and 2018

P Wielgosz, B Milanowska, A Krypiak-Gregorczyk… - GPS Solutions, 2021 - Springer
Abstract Ionosphere Associate Analysis Centers (IAACs) of the International GNSS Service
(IGS) independently produce global ionosphere maps (GIMs) of the total electron content …

[HTML][HTML] Evaluation of ionospheric delay effects on multi-GNSS positioning performance

K Su, S **, MM Hoque - Remote Sensing, 2019 - mdpi.com
Ionospheric delay is a significant error source in multi-GNSS positioning. We present
different processing strategies to fully exploit the ionospheric delay effects on multi …

Mid‐latitude ionospheric response to a weak geomagnetic activity event during solar minimum

C Zhai, X Cai, W Wang, A Coster, L Qian… - Journal of …, 2023 - Wiley Online Library
Abstract Salient depletions (30%–40% of the reference values) were observed in the vertical
total electron content (VTEC) from the Global Navigation Satellite System (GNSS) network …

The mechanism for GNSS‐based kinematic positioning degradation at high‐latitudes under the March 2015 great storm

W Nie, A Rovira‐Garcia, M Li, Z Fang, Y Wang… - Space …, 2022 - Wiley Online Library
In this study, we focus on the kinematic precise point positioning (PPP) solutions at high‐
latitudes during the March 2015 great geomagnetic storm. We aim to discover the …

Potential of regional ionosphere prediction using a long short‐term memory deep‐learning algorithm specialized for geomagnetic storm period

JH Kim, YS Kwak, YH Kim, SI Moon, SH Jeong… - Space …, 2021 - Wiley Online Library
In our previous study (Moon et al., 2020, https://doi. org/10.3938/jkps. 77.1265), we
developed a long short‐term memory (LSTM) deep‐learning model for geomagnetic quiet …

Global ionospheric modeling using multi-GNSS and upcoming LEO constellations: Two methods and comparison

X Ren, J Zhang, J Chen, X Zhang - IEEE transactions on …, 2021 - ieeexplore.ieee.org
Global ionosphere model with high accuracy and resolution is of great importance for
ionospheric research and global navigation satellite system (GNSS) precise positioning …

A new method for global ionospheric real-time modeling integrating ionospheric VTEC short-term forecast results

P Chen, R Wang, Y Yao, M **ong, Y Zhang, X Yang - Journal of Geodesy, 2024 - Springer
As an important data source for monitoring the behavior and variations of the ionosphere,
the accuracy of current real-time global ionospheric maps (RT-GIMs) in low-latitude regions …

Research progress and prospect of monitoring ionosphere by GNSS technique

Y YAO, X GAO - Geomatics and Information Science of Wuhan …, 2022 - ch.whu.edu.cn
Ionosphere is an important part of the near-earth space environment, and it has an important
impact on radio communication, satellite navigation and positioning. Therefore, monitoring …