Results 21 to 30 of about 316,883 (321)

The ionosphere prediction service prototype for GNSS users

Journal of Space Weather and Space Climate, 2019
The effect of the Earth’s ionosphere represents the single largest contribution to the Global Navigation Satellite System (GNSS) error budget and abnormal ionospheric conditions can impose serious degradation on GNSS system functionality, including ...
Vadakke Veettil Sreeja, Cesaroni Claudio, Aquino Marcio, De Franceschi Giorgiana, Berrili Francesco, Rodriguez Filippo, Spogli Luca, Del Moro Dario, Cristaldi Alice, Romano Vincenzo, Ronchini Roberto, Di Rollo Stefano, Guyader Eric, Aragon-Angel Angela   +13 more
doaj   +1 more source

Role of the Dilution of the Gd Sublattice in Forming the Scintillation Properties of Quaternary (Gd,Lu)₃Al₂Ga₃O₁₂: Ce Ceramics

Crystals, 2022
Technological factors and processes contributing to the scintillation mechanism have been considered in quaternary garnet ceramics doped with Ce(Gd,Lu)3Al2Ga3O12.
Mikhail Korzhik, Vasilii Retivov, Alexei Bondarau, Georgiy Dosovitskiy, Valery Dubov, Irina Kamenskikh, Petr Karpuk, Daria Kuznetsova, Valentina Smyslova, Vitaly Mechinsky, Vladimir Pustovarov, Dmitry Tavrunov, Evgeniy Tishchenko, Andrei Vasil’ev   +13 more
doaj   +1 more source

Effects of Atmospheric Turbulence on Optical Wireless Communication in NEOM Smart City

Photonics, 2022
The foundation of any smart city requires an innovative and robust communication infrastructure. Many research communities envision free-space optical communication (FSO) as a promising backbone technology for the services and applications provided by ...
Ayshah S. Alatawi, Albashir A. Youssef, Mohamed Abaza, Mohammad Ammad Uddin, Ali Mansour   +4 more
doaj   +1 more source

Intra-Day Variability and the Interstellar Medium Towards 0917+624 [PDF]

, 2001
The intra-day variable source 0917+624 displays annual changes in its timescale of variability. This is explained in terms of a scintillation model in which changes in the variability timescale are due to changes in the relative velocity of the ...
Armstrong, D. L. Jauncey, Goldreich, Heeschen, J.-P. Macquart, Kraus, Macquart, Narayan, Quirrenbach, Quirrenbach, Quirrenbach, Quirrenbach, Rickett, Spangler, Stickel, Walker, Wilkinson, Witzel   +17 more
core   +2 more sources

The Impact of Crystal Light Yield Non-Proportionality on a Typical Calorimetric Space Experiment: Beam Test Measurements and Monte Carlo Simulations

Instruments, 2022
Calorimetric space experiments were employed for the direct measurements of cosmic-ray spectra above the TeV region. According to several theoretical models and recent measurements, relevant features in both electron and nucleus fluxes are expected ...
Lorenzo Pacini, Oscar Adriani, Eugenio Berti, Pietro Betti, Gabriele Bigongiari, Lorenzo Bonechi, Massimo Bongi, Sergio Bottai, Paolo Brogi, Guido Castellini, Caterina Checchia, Raffaello D’Alessandro, Sebastiano Detti, Noemi Finetti, Paolo Maestro, Pier Simone Marrocchesi, Nicola Mori, Miriam Olmi, Paolo Papini, Claudia Poggiali, Sergio Ricciarini, Piero Spillantini, Oleksandr Starodubtsev, Francesco Stolzi, Alessio Tiberio, Elena Vannuccini   +25 more
doaj   +1 more source

Long-term operation of a multi-channel cosmic muon system based on scintillation counters with MRS APD light readout [PDF]

, 2008
A Cosmic Ray Test Facility (CRTF) is the first large-scale implementation of a scintillation triggering system based on a new scintillation technique known as START.
A. Akindinov, A. Martemiyanov, A. Nedosekin, Akindinov, Akindinov, Akindinov, D. Mal’kevich, E. Grigoriev, K. Voloshin, M. Ryabinin, Musienko, S. Kuleshov, V. Golovin, Yu. Grishuk   +13 more
core   +2 more sources

A new technique for infrared scintillation measurements [PDF]

, 2016
We propose a new technique to measure the infrared scintillation light yield of rare earth (RE) doped crystals by comparing it to near UV-visible scintillation of a calibrated Pr:(Lu$_{0.75}$Y$_{0.25}$)$_{3}$Al$_5$O$_{12}$ sample. As an example, we apply
Borghesani, A. F., Braggio, C., Brylew, K., Carugno, G., Chiossi, F., Drozdowski, W., Guarise, M.   +6 more
core   +2 more sources

Comparison of Low‐Latitude Ionospheric Scintillation Forecasting Techniques Using a Physics‐Based Model

Space Weather, 2021
The temporal change in height of a specific electron density can be used as a proxy for vertical plasma drift (PVPD) at the magnetic equator. The use of PVPDs as a predictor of low‐latitude ionospheric scintillation during the subsequent evening has ...
L. D. Nugent, S. Elvidge, M. J. Angling
doaj   +1 more source

A Statistical Analysis of Sporadic-E Characteristics Associated with GNSS Radio Occultation Phase and Amplitude Scintillations

Atmosphere, 2022
Statistical GNSS-RO measurements of phase and amplitude scintillation are analyzed at the mid-latitudes in the local summer for a 100 km altitude. These conditions are known to contain frequent sporadic-E, and the S4-σϕ trends provide insight into the ...
Daniel J. Emmons, Dong L. Wu, Nimalan Swarnalingam   +2 more
doaj   +1 more source

Time Series Irradiance Synthesizer for Optical GEO Satellite Downlinks in 5G Networks

Future Internet, 2019
Next generation 5G networks generate a need for broadband, low latency and power efficient backhauling and data-relay services. In this paper, optical satellite communications links, as an integrated component of 5G networks, are studied.
Theodore T. Kapsis, Nikolaos K. Lyras, Charilaos I. Kourogiorgas, Athanasios D. Panagopoulos   +3 more
doaj   +1 more source