Results 191 to 200 of about 37,161 (220)

Fecal short-chain fatty acids vary by sex and amyloid status. [PDF]

Alzheimers Dement
Kuehn JF, Zhang Q, Heston MB, Kang JW, Harding SJ, Davenport-Sis NJ, Peter DC, Kerby RL, Vemuganti V, Schiffmann EC, Tallon MM, Harpt J, Hajra A, Wheeler JL, Shankar S, Mickol A, Zemberi J, Chow H, Zhang E, Clements E, Noughani H, Forst A, Everitt G, Kollmorgen G, Quijano-Rubio C, Christian BT, Carlsson CM, Johnson SC, Asthana S, Zetterberg H, Blennow K, Ulland TK, Rey FE, Bendlin BB.   +33 more
europepmc   +1 more source

BeamCraft: Deep Reinforcement Learning-DrivenMulti-Objective Beamforming for ISAC

Dao DN, Miao Y.
europepmc   +1 more source

A new Egyptian Grid Weighted Mean Temperature (EGWMT) model using hourly ERA5 reanalysis data in GNSS PWV retrieval. [PDF]

Sci Rep
Sleem RE, Abdelfatah MA, Mousa AE, El-Fiky GS.   +3 more
europepmc   +1 more source

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Assimilation of GNSS Zenith Total Delay in NAVGEM

Journal of Geophysical Research: Atmospheres, 2023
AbstractA new data source from ground‐based stations that track global navigation satellite system (GNSS) transmitters has been implemented in the Navy Global Environmental Model (NAVGEM) with the NRL Atmospheric Variational Data Assimilation System‐Accelerated Representer.
Hui Christophersen, Benjamin Ruston, Nancy L. Baker   +2 more
openaire   +3 more sources

Assessment of GNSS Zenith Total Delay Estimation Using Smart Devices

ION GNSS+, The International Technical Meeting of the Satellite Division of The Institute of Navigation, 2019
Global Navigation Satellite System (GNSS) have been routinely used in the last decades to estimate water vapor content in the lower part of the atmosphere. Water vapor measurements have been successfully integrated in Numerical Weather Prediction (NWP) models, showing a positive impact on the forecast of rain events.
Giulio Tagliaferro, Andrea Gatti, Eugenio Realini   +2 more
openaire   +1 more source

Analysis and Estimation of Zenith Wet Delay and Zenith Tropospheric Total Delay at Earth’s different Geographical Areas

2021 Seventh International Conference on Aerospace Science and Engineering (ICASE), 2021
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Investigation on the Relation between Zenith Total Delay and Atmospheric Particulate Matter (PM2.5)

2021 IEEE USNC-URSI Radio Science Meeting (Joint with AP-S Symposium), 2021
Shilpa Manandhar, Yu Song Meng, Yee Hui Lee   +2 more
openaire   +1 more source

Climate trends derived from long-term ground-based GNSS-derived Zenith Total Delay (ZTD)

We present findings from an ongoing investigation into the evaluation of long-term trends in ground-based GNSS-derived Zenith Total Delay (ZTD) for potential integration into climate models, either for assimilation or validation purposes. Our analysis focuses on ZTD time series obtained from six REPRO3 IGS Analysis Centers (ACs) – COD, ESA ...
Marcelo C. Santos, Kyriakos Balidakis, Anna Kloss, Rosa Pacione, Jordan Rees   +4 more
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A global grid model for the correction of the vertical zenith total delay based on a sliding window algorithm

GPS Solutions, 2021
Liangke Huang, Lilong Liu, Weiping Jiang
exaly  

Impact of assimilating GNSS Tropospheric Gradients along with Zenith Total Delays for Severe Weather Prediction

The Global Navigation Satellite System (GNSS) tropospheric gradients offer valuable information about how moisture is distributed in the atmosphere. These gradients are determined by studying variations in how the atmosphere refracts signals, which are measured based on delays from satellites positioned at different angles. Zus et al.
Rohith Muraleedharan Thundathil, Florian Zus, Thomas Schwitalla, Matthias Aichinger-Rosenberger, Galina Dick, Jens Wickert   +5 more
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