Results 1 to 10 of about 460,470 (143)

A Regional Ionospheric Storm Forecasting Method Using a Deep Learning Algorithm: LSTM

open access: yesSpace Weather, 2023
An ionospheric storm forecasting method was proposed using a deep learning algorithm, LSTM (long short‐term memory). We used the perturbation index to denote the level of an ionospheric storm, deduced from foF2 data, and helped to remove most of the ...
Panpan Ban   +6 more
doaj   +1 more source

Entire Propagator [PDF]

open access: yesProceedings of the American Mathematical Society, 1994
We construct an entire solution for an evolutionary Cauchy problem when the initial data is an entire vector of an appropriate operator in a Banach space. We give a sufficient condition for an entire domination. Our results are applied to some partial differential equations including the Dirac system.
Autret, L., Emamirad, H.
openaire   +2 more sources

Lidar for atmospheric transparency monitoring [PDF]

open access: yesEPJ Web of Conferences, 2021
The transparency of the atmosphere affects the quality of astronomical observations and optical communications, but above all, it directly controls the fluxes of radiation, which is of particular interest for the study of weather and climate changes. The
Shevtsov Boris   +3 more
doaj   +1 more source

Satellite Navigation Spoofing Interference Detection and Direction Finding Based on Array Antenna

open access: yesSensors, 2023
Satellite navigation signals are feeble when they reach the ground, so they are vulnerable to attacks from outside interference signals. By emitting spoofing interference signals similar to real satellite signals, spoofing interference can make receivers
Huiyun Yang   +4 more
doaj   +1 more source

Principles of Creation of Local Network for Lightning Discharge Observations on Active Volcanoes of Kamchatka Peninsula [PDF]

open access: yesE3S Web of Conferences, 2019
To investigate the thunderstorm activity according to electromagnetic radiation recorded data, it is necessary to create a local network which will be located near the Klyuchevskaya Sopka, Shiveluch and Tolbachik volcanoes.
Malkin Evgeniy   +6 more
doaj   +1 more source

Quark propagator, instantons, and gluon propagator [PDF]

open access: yesPhysical Review C, 1999
Latex file, no ...
Kisslinger, L. S.   +3 more
openaire   +2 more sources

The Qujing incoherent scatter radar: system description and preliminary measurements

open access: yesEarth, Planets and Space, 2018
The Qujing incoherent scatter radar (QJISR), the first one in China with the geographic location (25.6°N, 103.8°E), was brought into operation since the spring of 2014.
ZongHua Ding   +4 more
doaj   +1 more source

The tachyon propagator [PDF]

open access: yesIl Nuovo Cimento A, 1993
10 pages. No figures.
Barci, Daniel Gustavo   +2 more
openaire   +3 more sources

Precursors Identification for Forecasting UHF‐Band Ionospheric Scintillation Events Over Chinese Low‐Latitude Region by Deep Learning

open access: yesEarth and Space Science, 2022
The occurrences of the UHF‐band ionospheric scintillation events caused by Equatorial Plasma Bubbles (EPBs) in the low‐latitude region depend on many factors.
Hongbo Zhang   +4 more
doaj   +1 more source

Automatic GNSS Ionospheric Scintillation Detection with Radio Occultation Data Using Machine Learning Algorithm

open access: yesApplied Sciences, 2023
Ionospheric scintillation often occurs in the polar and equator regions, and it can affect the signals of the Global Navigation Satellite System (GNSS).
Guangwang Ji   +3 more
doaj   +1 more source

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