Results 61 to 70 of about 17,319 (249)

Medium Earth Orbit dynamical survey and its use in passive debris removal

, 2019
The Medium Earth Orbit (MEO) region hosts satellites for navigation, communication, and geodetic/space environmental science, among which are the Global Navigation Satellites Systems (GNSS).
Rosengren, Aaron J., Skoulidou, Despoina K., Tsiganis, Kleomenis, Voyatzis, George   +3 more
core   +1 more source

In Situ Validation of Small‐Scale Spatial Variability in Significant Wave Height Observations From SWOT

Earth and Space Science, Volume 12, Issue 12, December 2025.
Abstract Ocean surface wave climates are shaped by both atmospheric forcing and underlying ocean conditions. Variability in open‐ocean wave heights subsequently reflects complex interactions occurring across a broad range of spatial and temporal scales.
Allison Ho, Jinbo Wang, Bruce Haines, Andy Wu, Scott Stalin   +4 more
wiley   +1 more source

Galileo and EGNOS as an asset for UTM safety and security [PDF]

, 2019
GAUSS (Galileo-EGNOS as an Asset for UTM Safety and Security) is a H2020 project1 that aims at designing and developing high performance positioning systems for drones within the U-Space framework focusing on UAS (Unmanned Aircraft System) VLL (Very Low ...
Andrade-Cetto, Juan, Capitan, Carlos, Dontas, Ioannis, Jia, Huamin, Jimenez, Adrian, Kostaridis, Antonis, Oliveres, Enric, Tesfai, Ivan   +7 more
core  

Analysis of the satellite navigational data in the Baseband signal processing of Galileo E5 AltBOC signal [PDF]

, 2021
Subhan Khan, Yiqun Zhu, Muhammad Jawad, Muhammad Umair Safder, Mujtaba Hussain Jaffery, Salman Javid   +5 more
openalex   +1 more source

The Analysis of the Ionospheric Radio Occultation Data Coverage for ANCHOR Ionospheric Data Assimilation

Space Weather, Volume 23, Issue 12, December 2025.
Abstract The Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC‐1 and COSMIC‐2) missions provide global observations of atmospheric and ionospheric conditions using Global Navigation Satellite System (GNSS) radio occultation (RO).
Victoriya V. Forsythe, Jan‐Peter Weiss, Irfan Azeem, William Gullotta, Sarah E. McDonald, Katherine A. Zawdie, Emily C. Morgan, Douglas P. Drob   +7 more
wiley   +1 more source

Multi-GNSS products and services at iGMAS Wuhan Innovation Application Center: strategy and evaluation

Satellite Navigation, 2022
Over the past years the International Global Navigation Satellite System (GNSS) Monitoring and Assessment System (iGMAS) Wuhan Innovation Application Center (IAC) dedicated to exploring the potential of multi-GNSS signals and providing a set of products ...
Xingxing Li, Qingyun Wang, Jiaqi Wu, Yongqiang Yuan, Yun Xiong, Xuewen Gong, Zhilu Wu   +6 more
doaj   +1 more source

Codes Cross-Correlation Impact on S-curve Bias and Data-Pilot Code Pairs Optimization for CBOC Signals [PDF]

, 2013
The aim of this paper is to analyze the impact of spreading codes cross-correlation on code tracking performance, and to optimize the data-pilot code pairs of Galileo E1 Open Service (OS) Composite Binary Offset Carrier (CBOC) signals.
Geng, S., Huang, Z., Yang, Z.
core   +1 more source

VAMPIRE: Using a Random Forest to Forecast Earth's Outer Van Allen Radiation Belt

Space Weather, Volume 23, Issue 12, December 2025.
Abstract The outer Van Allen radiation belt is highly dynamic in both strength and location, being driven by several distinct physical processes, making it difficult to predict for spacecraft operators. Forecasting models exist, in part, to minimise potential damage caused by this natural hazard.
D. J. Weston, I. J. Rae, A. W. Smith, K. R. Murphy, C. E. J. Watt, F. X. Bocquet, S. Bingham, E. M. Henley   +7 more
wiley   +1 more source

Safety Relevant Positioning Applications in Rail Traffic using the European Satellite System "Galileo" [PDF]

, 2006
Die Ortung im Eisenbahnverkehr hat eine hohe sicherheitstechnische Relevanz. Eine falsch detektierte Position eines Fahrzeugs kann zu einer erheblichen Gefährdung führen, da die ermittelte Ortsinformation für die Freigabe und das Wiederbesetzen von ...
Grimm, Matthias, Hartwig, Katrin, Lemmer, Karsten, Meyer zu Hörste, Michael   +3 more
core  

Testing the Flyby Anomaly with the GNSS Constellation

, 2011
We propose the concept of a space mission to probe the so called flyby anomaly, an unexpected velocity change experienced by some deep-space probes using earth gravity assists.
Ashby N., Bearden D., FREDERICO FRANCISCO, JORGE PÁRAMOS, McCulloch M. E., Moreau M., ORFEU BERTOLAMI, PAULO J. S. GIL, Rievers B.   +8 more
core   +1 more source