Results 11 to 20 of about 271,806 (319)

The improvement of fiber-detection method to enhance the output of amplify-received relaying on FSO communications [PDF]

open access: yesInternational Journal of Electronics and Telecommunications, 2023
The performance of free-space optical (FSO) communications that using an optical amplifier (OA) in the scheme of an amplify-received (AR)-relaying has a major drawback in the detection of input signal quality under the effects of turbulence.
Ucuk Darusalam   +3 more
doaj   +1 more source

Composite scintillators based on ZnWO4:Me+ micropowders obtained by solid-state synthesis

open access: yesVìsnik Harkìvsʹkogo nacìonalʹnogo unìversitetu ìmenì V.N. Karazìna. Serìâ: fìzika., 2022
The paper considers the possibility of using the method of heterovalent doping to improve the functional characteristics (light output and afterglow level) of composite scintillators based on ZnWO4 micropowder obtained by solid-stase synthesis.
V.S. Tinkova   +5 more
doaj   +1 more source

Observations and modeling of scintillation in the vicinity of a polar cap patch

open access: yesJournal of Space Weather and Space Climate, 2022
Small-scale ionospheric plasma structures can cause scintillation in radio signals passing through the ionosphere. The relationship between the scintillated signal and how plasma structuring develops is complex.
Lamarche Leslie J.   +2 more
doaj   +1 more source

Climatology of GPS phase scintillation at northern high latitudes for the period from 2008 to 2013 [PDF]

open access: yesAnnales Geophysicae, 2015
Global positioning system scintillation and total electron content (TEC) data have been collected by ten specialized GPS Ionospheric Scintillation and TEC Monitors (GISTMs) of the Canadian High Arctic Ionospheric Network (CHAIN).
P. Prikryl   +4 more
doaj   +1 more source

Indirect X-ray detectors with single-photon sensitivity

open access: yesJournal of Synchrotron Radiation, 2022
The new generation of synchrotron light sources are pushing X-ray detectors to their limits. Very demanding conditions with unprecedented flux and higher operating energies now require high-performance X-ray detectors combining sensitivity, efficiency ...
Kristof Pauwels, Paul-Antoine Douissard
doaj   +1 more source

Scintillation Increase Induced by Focusing (Invited)

open access: yesPhotonics, 2023
We show that the focusing of a random electromagnetic beam by a lens gives rise to a scintillation index at the geometrical focus that generally differs from that of the incident beam.
Jia Xu   +3 more
doaj   +1 more source

Supervised Detection of Ionospheric Scintillation in Low-Latitude Radio Occultation Measurements

open access: yesRemote Sensing, 2021
Global Navigation Satellite System (GNSS) Radio Occultation (RO) has provided high-quality atmospheric data assimilated in Numerical Weather Prediction (NWP) models and climatology studies for more than 20 years.
Vinícius Ludwig-Barbosa   +5 more
doaj   +1 more source

On the Relationship between Low Latitude Scintillation Onset and Sunset Terminator over Africa

open access: yesRemote Sensing, 2021
The solar terminator is a moving boundary between day-side and night-side regions on the Earth, which is a substantial source of perturbations in the ionosphere. In the vicinity of the solar terminator, essential parameters like S4 index measurements are
Mogese Wassaie Mersha   +5 more
doaj   +1 more source

The Mu2e Crystal Calorimeter: An Overview

open access: yesInstruments, 2022
The Mu2e experiment at Fermilab will search for the standard model-forbidden, charged lepton flavour-violating conversion of a negative muon into an electron in the field of an aluminium nucleus.
Nikolay Atanov   +38 more
doaj   +1 more source

Towards the possibility to combine LOFAR and GNSS measurements to sense ionospheric irregularities

open access: yesJournal of Space Weather and Space Climate, 2023
Inhomogeneities within the ionospheric plasma density affect trans-ionospheric radio signals, causing radio wave scintillation in the amplitude and phase of the signals.
Flisek Paweł   +18 more
doaj   +1 more source

Home - About - Disclaimer - Privacy