Results 111 to 120 of about 46,869 (239)

GNSS and LiDAR Integrated Navigation Method in Orchards with Intermittent GNSS Dropout

Applied Sciences
Considering the vulnerability of satellite positioning signals to obstruction and interference in orchard environments, this paper investigates a navigation and positioning method based on real-time kinematic global navigation satellite system (RTK-GNSS),
Yilong Li, Qingchun Feng, Chao Ji, Jiahui Sun, Yu Sun   +4 more
doaj   +1 more source

A Multi Antenna Receiver for Galileo SoL Applications [PDF]

, 2008
One of the main features of the Galileo Satellite Navigation System is integrity. To ensure a reliable and robust navigation for Safety of Life applications, like CAT III aircraft landings, new receiver technologies are indispensable.
Cuntz, Manuel, Denks, Holmer, Hornbostel, Achim, Konovaltsev, Andriy, Meurer, Michael, Schroth, Arno   +5 more
core  

Forecasting Total Electron Content During Geomagnetic Storms Using Convolutional Long Short‐Term Memory (ConvLSTM): Performance and Limitations

Space Weather, Volume 24, Issue 2, February 2026.
Abstract This study investigates the effects of quiet time ionospheric conditions and the number of storm events used for training on the prediction of ionospheric total electron content (TEC) during geomagnetic storms using a deep learning method.
Se‐Heon Jeong, Hyosub Kil, Woo Kyoung Lee, Jeong‐Heon Kim, Young‐Sil Kwak   +4 more
wiley   +1 more source

High‐Precision Prediction of Auroral Substorm Expansion Phase Evolution Using a Spatio‐Temporal Attention Deep Learning Model

Space Weather, Volume 24, Issue 2, February 2026.
Abstract Auroral substorms are a key manifestation of solar‐terrestrial interactions and the release of energy within the Earth's magnetosphere. The expansion phase, which is characterized by rapid changes in auroral morphology and intensity, poses significant space weather risks to satellite operations and communication systems.
Qiuju Yang, Xiaojian Cao, Yong Wang, Zanyang Xing   +3 more
wiley   +1 more source

AI‐Based Improvement of IRI‐2020 Electron Density Profiles With COSMIC Radio Occultation Data

Space Weather, Volume 24, Issue 2, February 2026.
Abstract In this study, we propose an AI‐based method to improve the electron density profiles generated by the International Reference Ionosphere (IRI)‐2020 model using the Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC) radio occultation (RO) data.
Eun‐Young Ji, Yong‐Jae Moon, Young‐Sil Kwak, Kangwoo Yi, Jeong‐Heon Kim, Woong Jeon   +5 more
wiley   +1 more source

The Real‐Time Advanced Ionospheric Data Assimilation (AIDA) Model

Space Weather, Volume 24, Issue 2, February 2026.
Abstract The Advanced Ionospheric Data Assimilation (AIDA) is a real‐time data assimilation model of global 3D ionosphere and plasmasphere electron density. Changes in the local space environment can occur on very short timescales, particularly during disturbed geomagnetic conditions.
Benjamin Reid, David R. Themens, Sean Elvidge, Mohammad Afraz Ahmed, Warrick Ball, M. Mainul Hoque   +5 more
wiley   +1 more source

Analysis of GNSS Interference Events Based on TRITON GNSS-R Measurements

Navigation
Although the issue of global navigation satellite system (GNSS) interference has been addressed in the community of satellite navigation, the extent of GNSS interference in the past couple of years has raised serious concerns for air and marine ...
Jyh-Ching Juang, Yung-Fu Tsai
doaj   +1 more source

The Non‐Linear Dependence of Daily Maximum Ionospheric Total Electron Content on F10.7

Space Weather, Volume 24, Issue 2, February 2026.
Abstract Daily 10.7 cm solar flux, the F10.7 index, is a key parameter for the ionospheric state. Global maps of ionospheric Total Electron Content (TEC) offer almost continuous multidecadal coverage. We find that the global daily maximum of TEC saturates with daily F10.7.
M. A. Cafolla, S. C. Chapman, N. W. Watkins, O. P. Verkhoglyadova   +3 more
wiley   +1 more source

Analysis of Ionospheric Disturbances Near 120°E in the Asia‐Pacific Sector During the May 2024 Superstorm Using Multi‐Instrument Observations

Space Weather, Volume 24, Issue 2, February 2026.
Abstract On 10 May 2024, a severe G5 geomagnetic storm—the most intense of solar cycle 25—significantly disturbed the global ionosphere. This study presents a comprehensive analysis using multi‐instrument observations, including ground‐based measurements from BDS‐GEO total electron content (TEC), digital ionosondes, and magnetometers; model outputs ...
Yue Sun, Jun Tang, Hanyang Teng, Chaoqian Xu, Liang Zhang   +4 more
wiley   +1 more source

Retrieving Three‐Dimensional Deformation in Groundwater Pumping Areas Based on InSAR Data

Water Resources Research, Volume 62, Issue 2, February 2026.
Abstract Monitoring three‐dimensional (3D) surface deformation in groundwater pumping areas remains a significant challenge, as conventional InSAR techniques are constrained by their limited sensitivity to north‐south displacement. This study develops an inversion approach—the Vertical Gradient‐Constrained Strain Model (VG‐SM3D)—that combines multi ...
Guangli Su, Chunbao Xiong, Wei Zhan, Nannan Guo, Renjie Wei   +4 more
wiley   +1 more source