LEO constellation-augmented multi-GNSS for rapid PPP convergence

X Li, F Ma, X Li, H Lv, L Bian, Z Jiang, X Zhang - Journal of Geodesy, 2019 - Springer
The fast motion of low earth orbit (LEO) satellite contributes to the geometric diversity,
allowing for rapid convergence of precise point positioning (PPP). In this contribution, we …

Was magnetic storm the only driver of the long‐duration enhancements of daytime total electron content in the Asian‐Australian sector between 7 and 12 September …

J Lei, F Huang, X Chen, J Zhong, D Ren… - Journal of …, 2018 - Wiley Online Library
In this study, multiple data sets from Beidou geostationary orbit satellites total electron
contents (TECs), ionosonde, meteor radar, magnetometer, and model simulations have …

Combined model of topside ionosphere and plasmasphere derived from radio-occultation and Van Allen Probes data

FS Prol, AG Smirnov, MM Hoque, YY Shprits - Scientific reports, 2022 - nature.com
In the last years, electron density profile functions characterized by a linear dependence on
the scale height showed good results when approximating the topside ionosphere. The …

NeQuick-G performance assessment for space applications

O Montenbruck, B González Rodríguez - GPS solutions, 2020 - Springer
Other than traditional single-layer ionosphere models for global navigation satellite system
(GNSS) receivers, the NeQuick-G model of Galileo provides a fully three-dimensional …

Mapping topside ionospheric vertical electron content from multiple LEO satellites at different orbital altitudes

X Ren, J Chen, X Zhang, M Schmidt, X Li, J Zhang - Journal of Geodesy, 2020 - Springer
In this paper, we present an approach to generating a global topside ionospheric map
(GTIM) using dual-frequency global positioning system (GPS) data from multiple low Earth …

Long‐duration depletion in the topside ionospheric total electron content during the recovery phase of the March 2015 strong storm

J Zhong, W Wang, X Yue, AG Burns… - Journal of …, 2016 - Wiley Online Library
Topside ionospheric total electron content (TEC) observations from multiple low‐Earth orbit
(LEO) satellites have been used to investigate the local time, altitudinal, and longitudinal …

A tomographic method for the reconstruction of the plasmasphere based on COSMIC/FORMOSAT-3 data

FS Prol, MM Hoque - IEEE Journal of Selected Topics in …, 2022 - ieeexplore.ieee.org
A tomographic method has been developed for reconstructing the topside ionospheric and
plasmaspheric electron density distribution using total electron content (TEC) measurements …

Middle‐latitudinal band structure observed in the nighttime ionosphere

J Zhong, J Lei, X Yue, X Luan… - Journal of Geophysical …, 2019 - Wiley Online Library
In this study, the Constellation Observing System for Meteorology, Ionosphere, and Climate
(COSMIC) electron densities (Ne) from 200 to 800 km during 2006–2017 are used to …

Inland water body surface height retrievals using CYGNSS delay doppler maps

J Zhang, YJ Morton - IEEE Transactions on Geoscience and …, 2023 - ieeexplore.ieee.org
CYGNSS satellites record the power of GNSS reflection signals in delay and Doppler shift
bins. Myriad delay Doppler maps (DDMs) have been collected since 2016. Research has …

Topside ionospheric conditions during the 7–8 September 2017 geomagnetic storm

O Jimoh, J Lei, J Zhong, C Owolabi… - Journal of …, 2019 - Wiley Online Library
The uplooking total electron contents (TECs) from the GRACE, SWARM‐A, TerraSAR‐X,
and MetOp‐A satellites and in situ electron density (Ne) from SWARM‐A were utilized to …