Results 1 to 10 of about 48 (45)

T-RAIM Approaches: Testing with Galileo Measurements

Sensors, 2023
Several applications rely on time retrieved from Global Navigation Satellite System (GNSS), and this pushes for integrity tailored to timing. Integrity information could be broadcast by GNSS itself, but currently, there are no GNSSs providing such ...
Ciro Gioia, Gioia Ciro
exaly   +5 more sources

T-RAIM for Precise Orbit Determination in LEO-PNT

Sensors
The rapid development of Low Earth Orbit Position, Navigation, and Timing (LEO-PNT) constellations presents opportunities to augment Global Navigation Satellite Systems (GNSSs) with additional signals from Low Earth Orbit (LEO) satellites, thereby ...
Ciro Gioia, Francesco Menzione, Andrea Piccolo, Stefano Casotto, Massimo Bardella   +4 more
doaj   +3 more sources

Multi-Layer Defences for Robust GNSS Timing Retrieval

Sensors, 2021
A multi-layered interference mitigation approach can significantly improve the performance of Global Navigation Satellite System (GNSS) receivers in the presence of jamming.
Ciro Gioia, Daniele Borio
doaj   +1 more source

Equivalence Proof and Performance Analysis of Weighted Least Squares Residual Method and Weighted Parity Vector Method in RAIM

IEEE Access, 2019
Besides accuracy, integrity is another important performance measure of GNSS. The classical least-squares-residual (LSR) method and parity vector (PV) method are often used in the receiver autonomous integrity monitoring (RAIM).
Xiaping Ma, Kegen Yu, Jean-Philippe Montillet, Xiaoxing He   +3 more
doaj   +1 more source

Forward‐Looking Study of Solar Maximum Impact in 2025: Effects of Satellite Navigation Failure on Aviation Network Operation in the Greater Bay Area, China

Space Weather, Volume 21, Issue 12, December 2023., 2023
Abstract Satellite navigation based on the Global Navigation Satellite System can provide aircraft with more precise guidance and increase flight efficiency. However, severe space weather events can cause satellite navigation failure due to the dramatic increase in total electron content and irregularities in the ionosphere.
Dabin Xue, Jian Yang, Zhizhao Liu, Wei Cong   +3 more
wiley   +1 more source

The Application of a Snowpack Runoff Decision Support System for Rain‐on‐Snow Events

Water Resources Research, Volume 62, Issue 4, April 2026.
Abstract Accurately forecasting hydrologic outcomes of rain‐on‐snow (ROS) events is critical for water management and flood mitigation, not only in the western U.S., but globally. This study further refines a Snowpack Runoff Decision Support System (SR‐DSS) using hourly Natural Resource Conservation Service SNOw TELemetry (SNOTEL) data to identify ...
A. Heggli, B. J. Hatchett, A. Chen, T. Bardsley, J. Moore, M. Imgarten, P. Fickenscher   +6 more
wiley   +1 more source

A Comprehensive Calibration Framework for the Northwest River Forecast Center

JAWRA Journal of the American Water Resources Association, Volume 62, Issue 2, April 2026.
ABSTRACT We present a comprehensive framework developed by the Northwest River Forecast Center for calibrating hydrologically diverse basins. The framework includes models for snow, soil moisture, routing, channel loss, and consumptive use. Data inputs include a wide range of open‐access datasets for meteorology, land use, topography, and land cover ...
Geoffrey Walters, Cameron Bracken, Brad Gillies, Leah Pope, Henry Pai, Sonali Chokshi, Victor Stegemiller, Stephen King, Julie Bracken, Taylor Dixon, Joe Intermill   +10 more
wiley   +1 more source

Shades of empire: Evidence from Swedish and Polish–Lithuanian partitions in the Baltics

The Economic History Review, Volume 79, Issue 1, Page 342-376, February 2026.
Abstract In this study, we explore the long‐run effects of Swedish and Polish–Lithuanian imperial legacies in the Baltic region. Using a robust regression discontinuity design, we identify persistent differences in socio‐economic development across the South Livonia–Courland and the South Livonia–Lettgallia borders that emerged as a result of the ...
Theocharis N. Grigoriadis, Alise Vitola
wiley   +1 more source

Unveiling Alkali‐Induced Redox Modulation: In‐Situ Spectroscopic Insights from RWGS on Alkali‐Modified ZrO2‐Supported Cu Catalysts

Advanced Science, Volume 13, Issue 2, 9 January 2026.
Revisiting the prevailing views that alkali only enhances adsorption properties and stabilizes metal particles against sintering, this study highlights the key role of Na+ in modulating Cu redox properties. Na+ added via wet impregnation (WI) hinders Cu2+ reduction but promotes oxidation and leads to Cu site loss by sintering/coverage. In contrast, the
Abdallah I. M. Rabee, Thanh Huyen Vuong, Laura Kraußer, Hayder Abed, Hanan Atia, Nils Rockstroh, Henrik Lund, Stephan Bartling, Evgenii V. Kondratenko, Angelika Brückner, Jabor Rabeah   +10 more
wiley   +1 more source

Enhancing Safety‐Integrity of Localization Systems in Lane‐Keeping Scenarios Using a Self‐Supervised Spatial Temporal Deep Network

IET Intelligent Transport Systems, Volume 20, Issue 1, January/December 2026.
Accurate and reliable real‐time localization for lane‐keeping underpins safe navigation in autonomous vehicles; however, these systems are frequently exposed to sensor faults induced by environmental disturbances, which can result in critical integrity failures.
Keng Wei Chou, Yao Jiun Huang, Kang Li
wiley   +1 more source