Results 51 to 60 of about 711,710 (171)
Geomatics, Natural Hazards & RiskEarthquakes release energy that triggers crustal deformation and atmospheric disturbances via surface waves, affecting the GNSS tropospheric delay. This study focuses on the 2025 Tibet MW6.8 and Myanmar MW7.9 earthquakes.
Hongzhan Zhou +4 more
doaj +1 more source
Tropospheric Delay Correction Based on a Three-Dimensional Joint Model for InSAR
Remote Sensing, 2019 Tropospheric delays in spaceborne Interferometric Synthetic Aperture Radar (InSAR) can contaminate the measurement of small amplitude earth surface deformation.
Huaping Xu +4 more
doaj +1 more source
Remote Sensing, 2022 Global navigation satellite system (GNSS) signals are affected by refraction when traveling through the troposphere, which result in tropospheric delay. Generally, the tropospheric delay is estimated as an unknown parameter in GNSS data processing.
Huan Zhang +6 more
doaj +1 more source
International Journal of Satellite Communications and Networking, EarlyView.ABSTRACT We present experimental results on the relationship between rain attenuation and simultaneous scintillation during rain events, based on beacon signal measurements at 19.7 (Ka‐band) and 39.4 GHz (Q‐band) from the geosynchronous Alphasat satellite (25° E), received at two Italian ground stations, Spino d'Adda (42.1° slant path) and Tito Scalo ...
Miles Turner +5 more
wiley +1 more source
An ERA5 tropospheric parameters-augmented approach for improving GNSS precise point positioning
Geodesy and Geodynamics, 2023 Precise Point Positioning (PPP) technology has developed into a potent instrument for geodetic positioning, ionospheric modeling, tropospheric atmospheric parameter detection, and seismic monitoring.
Liangke Huang +6 more
doaj +1 more source
Long‐Term Propagation Measurements in Madrid in a Q‐Band Satellite‐to‐Earth Link
International Journal of Satellite Communications and Networking, EarlyView.ABSTRACT The Q/V band (40/50 GHz) is gaining interest as satellite operators will need larger bandwidth to be able to provide their services, which are experiencing an increasingly high demand. An accurate characterization of the satellite‐to‐Earth propagation channel is of paramount importance to guarantee a high level of quality of service, by ...
Domingo Pimienta‐del‐Valle +3 more
wiley +1 more source
Analysis of accuracy and precision of GNSS zenith tropospheric delay [PDF]
, 2016 The aim of the thesis was to compare the calculations of zenith tropospheric delay, computed within the meteorological model, with an independently acquired calculation of three GNSS data processing methods.
Bohanec, Jure
core
A comprehensive comparison of atmospheric mapping functions for GPS measurements in Egypt
Journal of Geodetic Science, 2012 The principal limiting error source in the Global Positioning System (GPS) is the mismodeling of the delay experienced by radio waves in propagating through the atmosphere.
Younes S. A., Elmezayen A. G.
doaj +1 more source
Uncertainty Characterization Framework for Machine Learning Based ACM in Q‐Band Satellite Links
International Journal of Satellite Communications and Networking, EarlyView.ABSTRACT Adaptive coding and modulation (ACM) is a widely utilized technique in satellite communication networks to mitigate the adverse effects of rain fades, particularly in extremely high frequency (EHF) bands. As a core component of fade mitigation techniques (FMTs), ACM improves signal resilience.
Kamolideen Abolarinwa +3 more
wiley +1 more source
The Carbon Trap: Fragmentation, Accounting Hegemony, and Justice in Global Carbon Governance
Sustainable Development, EarlyView.ABSTRACT Carbon accounting is increasingly treated as the technical foundation of global climate action, yet the rules through which emissions are measured, converted, attributed, and disclosed remain fragmented across national inventories, corporate reporting standards, supply‐chain boundaries, and trade‐related policy instruments.
Jilong Pan, Haoxuan Yu
wiley +1 more source