Results 121 to 130 of about 47,957 (238)

GLSP‐EDConvLSTM: Enhancing TEC Prediction Performance by Simultaneously Perceiving Local and Global Spatial Features

Space Weather, Volume 24, Issue 5, May 2026.
Abstract Total Electron Content (TEC) is influenced by local and global scale factors: localized effects causing fine‐grained differences in small areas, and global‐scale effects driving synchronized variations across all over the world. This underscores the necessity of modeling both global and local features for high‐performance TEC prediction.
Xingyue Yao, Haijun Liu, Huijun Le, Shijia Li, Liwei Sun   +4 more
wiley   +1 more source

Smartphone Carrier Phase TEC: A Study Across Ionospheric Spatio‐Temporal Scales

Space Weather, Volume 24, Issue 5, May 2026.
Abstract This study explores the potential of dual‐frequency smartphones as accessible tools for citizen science in ionospheric research. While prior work by Smith et al. (2024, https://doi.org/10.1038/s41586‐024‐08072‐x) demonstrated global ionospheric monitoring using aggregated pseudorange Total Electron Content (TEC) data from millions of Android ...
Nina Servan‐Schreiber, Vincent Ledvina, Joshua Semeter, Jeremy Kuzub, Michael Hirsch, Meghan LeMay, Kshitij Duraphe, Jen‐Hsin Chiao, Yafei Chen, Joaquín Díaz Peña   +9 more
wiley   +1 more source

An Ambient Adaptive Global Navigation Satellite System Total Electron Content Predictive Model for Short-Term Rapid Geomagnetic Storm Events

Remote Sensing
Satellite navigation is an essential component of the national infrastructure. Space weather and ionospheric conditions are the prime sources of GNSS (global navigation satellite system) positioning, navigation, and timing (PNT) service disruptions and ...
Renato Filjar, Ivan Heđi, Jasna Prpić-Oršić, Teodor Iliev   +3 more
doaj   +1 more source

Snow Water Storage Within Eight Pacific Coastal Watersheds in British Columbia (Canada) Inferred From Four Years of Airborne Lidar Data

Water Resources Research, Volume 62, Issue 5, May 2026.
Abstract Maritime mountain snowpacks are among the least understood and most poorly quantified components of global snow water storage, despite their vital role in sustaining water supplies and ecosystem health. Here, we present a 4‐year record of snow mass distribution across eight small‐to‐medium‐sized (5.2–63.4 km2) watersheds within the coastal ...
R. Bisset, W. C. Floyd, B. Menounos, A. Bishop, S. Marchenko, G. Fisk, A. Cebulski, P. Marshall, D. Heathfield, S. Beffort, R. White, S. Gonzalez Arriola, N. Viner   +12 more
wiley   +1 more source

Refinement of a Framework for Moving Aircraft River Velocimetry (MARV) and Application to Particle Tracking Along Alaskan Rivers

Water Resources Research, Volume 62, Issue 5, May 2026.
Abstract Information on river velocities enhances understanding flood hazards, evaluating habitat conditions, and predicting the transport of floating materials. In this follow‐up study, we used data from two new sites, one with a more complex morphology and the other with a lower suspended sediment concentration, to provide further evidence that ...
Carl J. Legleiter, Paul J. Kinzel, Mark Laker, Jeffrey S. Conaway   +3 more
wiley   +1 more source

Robust Positioning in the Presence of Multipath and NLOS GNSS Signals [PDF]

GNSS signals can be blocked and reflected by nearby objects, such as buildings, walls, and vehicles. They can also be reflected by the ground and by water.
Ashman, Benjamin W., Groves, Paul D., McGraw, Gary A.   +2 more
core   +1 more source

Research on Polar Motion Prediction Accuracy Based on ETH and GFZ Angular Momentum Forecast Products

Earth and Space Science, Volume 13, Issue 5, May 2026.
Abstract Polar motion (PM), a critical element of Earth Orientation Parameters (EOP), is essential for high‐precision applications such as deep space exploration and satellite navigation. Recent advances in prediction methods utilizing Effective Angular Momentum (EAM) data have become a key pathway for enhancing PM forecast accuracy.
Xishun Li, Yuanwei Wu, Qiaoli Kong, Hai‐Hua Qiao, Tangrenjie Ye, Haiyan Yang, Zhizhuo Zhang, Xuan Cheng, Xuhai Yang, Xiaohui Li, Shougang Zhang   +10 more
wiley   +1 more source

CELESTIAL NAVIGATION AS THE EMERGENCY GNSS BACKUP: ENHANCING NAVIGATIONAL RELIABILITY

Scientific Journal of Gdynia Maritime University
The development of Global Navigational Satellite Systems (GNSS) has revolutionised navigation on ships. GNSS, together with electronic chart display information system (ECDIS), has made navigation more accurate, efficient, and safer for sailors. However
Ihor Liubarets
doaj   +1 more source

Detection and Modeling of Co‐Seismic Ionospheric Disturbances Induced by the 2024 Mw 6.6 Deep‐Focus Earthquake in Brazil

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract On 20 January 2024, a deep‐focus earthquake (Mw 6.6, depth 607 km) struck near Tarauacá, Brazil, within the subducted South America Nazca Plate. Although it produced no surface damage, the event generated clear co‐seismic ionospheric disturbances (CSIDs) detectable in GNSS‐based Total Electron Content (TEC) data from the Brazilian RBMC network.
Oluwasegun M. Adebayo, Esfhan A. Kherani, Alexandre A. Pimenta, Saul A. Sanchez   +3 more
wiley   +1 more source

Demand and key technology for a LEO constellation as augmentation of satellite navigation systems

Satellite Navigation
A Low Earth Orbit (LEO) constellation augmenting satellite navigation is important in the future development of Global Navigation Satellite System (GNSS).
Yuanxi Yang, Yue Mao, Xia Ren, Xiaolin Jia, Bijiao Sun   +4 more
doaj   +1 more source