Results 91 to 100 of about 200,933 (218)

Robust Machine Learning–Based Ionospheric Delay Grid Modeling for PPP‐RTK Under Sparse Reference Stations and Severe Geomagnetic Disturbance

Space Weather, Volume 24, Issue 9, September 2026.
Abstract Sparse reference station networks and severe geomagnetic disturbances can significantly degrade the accuracy of regional ionospheric delay modeling at the network side, thereby reducing the positioning performance of PPP‐RTK. To address this issue, this study proposes a machine learning‐based ionospheric delay grid modeling method that finely ...
Linyu He, Weiping Jiang, Hua Chen, Xingyu Zhou, Tianjun Liu, Jie He, Jie Ding   +6 more
wiley   +1 more source

An Investigation of GNSS Radio Occultation Data Pattern for Temperature Monitoring and Analysis over Africa

NDT - Journal of Non-Destructive Testing
Climate change monitoring and analysis is a critical task that involves the consideration of both spatial and temporal dimensions. Theimproved spatial distribution of the global navigation satellite system (GNSS) ground-based Continuous Operating ...
Usman Sa’i Ibrahim, Kamorudeen Aleem, Tajul Ariffin Musa, Terwase Tosin Youngu, Yusuf Yakubu Obadaki, Wan Anom Wan Aris, Kelvin Tang Kang Wee   +6 more
doaj   +1 more source

Autonomous GEO Satellite Navigation with Multiple GNSS Measurements [PDF]

, 2009
The poor satellite visibility and the weak signal power of the Global Positioning System (GPS) signal reception in side lobes are the main constraint on the Geostationary Earth Orbit (GEO) determination, however, the situation will improve when multi ...
Lim, S ; https://orcid.org/, Qiao, L ; https://orcid.org/, Liu, J, Rizos, C ; https://orcid.org/   +3 more
core   +1 more source

Remote sensing of ionospheric plasma bubbles using GPS/GNSS

, 2023
2016 International Conference on Localization and GNSS (ICL-GNSS), 28-30 June 2016, Barcelona, Spain.202305 bckwAccepted ManuscriptRGCOthersNational Natural Science Foundation of ChinaPublishedGreen ...
Kumar, S, Chen, W
core   +1 more source

Polarimetric GNSS Radio-Occultations for heavy rain detection [PDF]

, 2010
© 2010 IEEE. Reprinted, with permission, from Cardellach, E., Rius, A., Cerezo, F., Garcia-Primo, M.A., de la Torre-Juarez, M., Cucurull, L., Ector, D., Polarimetric GNSS Radio-Occultations for heavy rain detection, Proceedings of IEEE International ...
Rius, Antonio, E. Cardellach, M.A. Garcia-Primo, Torre Juárez, Manuel de la, L. Cucurull, D. Ector, Cardellach, Estel, Cerezo, Fernando, F. Cerezo, M. de la Torre-Juarez, A. Rius, Ector, Dave, García-Primo, Miguel Ángel, Cucurull, Lidia   +13 more
core   +1 more source

gnss-sdr/gnss-sdr: v0.0.10

, 2018
<p>This release has several improvements in different dimensions, addition of new features and bug fixes:</p> Improvements in Accuracy: <ul> <li>Part of the RTKLIB core library has been integrated into GNSS-SDR.
Gerald LaMountain, antonioramosdet, Zosoworld, Michael Dickens, marc-sales, Hoernchen, Javier Arribas, sundw2014, mmajoral, Marc L, Johannes, Gabriel Araujo, lmne741, Damian Miralles, Luis Esteve, OSQZSS, Academias IT, Anthony Arnold, marabra, Álvaro Cebrián Juan, Carles Fernandez, Mustafa Abaas, Usman Haider, odrisci, Andrés Cecilia Luque, Sergey   +25 more
core   +1 more source

Sensitivity of PAZ LEO polarimetric GNSS radio-occultation experiment to precipitation events [PDF]

, 2015
A Global Navigation Satellite System (GNSS) radio occultation (RO) experiment is being accommodated in the Spanish low Earth orbiter for Earth Observation PAZ.
Rius, Antonio, Padullés, Ramon, Tomás, Sergio, Torre Juárez, Manuel de la, Ao, Chi On, Turk, F. Joseph, Ector, Dave, Kursinski, E. Robert, Cardellach, Estel, Schreiner, Bill, Cucurull, Lidia, Oliveras, Santiago   +11 more
core   +1 more source

Advanced GNSS Receiver Signal Processing and Remote Sensing Applications [PDF]

, 2021
Global Navigation Satellite Systems (GNSS) signals are gaining popularity as signals-of-opportunity for remote sensing of the Earth ionosphere, atmosphere, and surface.
Wang, Yang
core  

Characterisation of residual ionospheric errors in bending angles using GNSS RO end-to-end simulations

, 2013
Global Navigation Satellite System (GNSS) radio occultation (RO) is an innovative meteorological remote sensing technique for measuring atmospheric parameters such as refractivity, temperature, water vapour and pressure for the improvement of numerical ...
Gottfried Kirchengast (20031621), Brett Carter (18031558), Congliang Liu (19996113), Kefei Zhang (18044098), Z Tan (11040648), M Schwaerz (20031627), Robert Norman (9699338), Yan Li (23143), Suqin Wu (7870070), Shaocheng Zhang (3710149), J Fritzer (20031624), Suelynn Choy (18030355)   +11 more
core  

Improvement of reflection detection success rate of GNSS RO measurements using artificial neural network

, 2018
Global Navigation Satellite System (GNSS) radio occultation (RO) has been widely used in the prediction of weather, climate, and space weather, particularly in the area of tropospheric analyses.
Andong Hu (2067883), Changyong He (14226753), Kefei Zhang (18044098), Sue Wu (19970970), Xiaoming Wang (187053), Yan Wang (15435), Robert Norman (9699338), Han Cai (3961724)   +7 more
core