Results 11 to 20 of about 178,465 (241)

The Comparison of Electron Density between CSES In Situ and Ground-Based Observations in China

open access: yesRemote Sensing, 2022
As the observation accuracy of parameters in the ionosphere cannot be directly checked, the comparison with other observations is the main way to evaluate the data quality of satellite measurements.
Jing Liu   +3 more
doaj   +1 more source

First Comparative Analysis of the Simultaneous Horizontal Wind Observations by Collocated Meteor Radar and FPI at Low Latitude through 892.0-nm Airglow Emission

open access: yesRemote Sensing, 2021
The Fabry–Pérot interferometer (FPI) and meteor radar are two important techniques for measuring the horizontal wind field in mesopause region, the observations of which still lack comprehensive comparison.
Shengyang Gu   +7 more
doaj   +1 more source

Plasma Mismatching with Microwave Transmission Characteristics for Diagnostic Purposes [PDF]

open access: yesJournal of Nuclear Research and Applications, 2023
Many remote diagnostics systems rely on transmission and reflection of electromagnetic waves. In diagnostics facilities such as microwave reflectometers which operate in the cut-off frequency range, collisionality of the plasma can affect the ...
E. Noori
doaj   +1 more source

Hereditary Mathematical Model of the Dynamics of Radon Accumulation in the Accumulation Chamber

open access: yesMathematics, 2023
Mathematical modeling is used to study the hereditary mechanism of the accumulation of radioactive radon gas in a chamber with gas-discharge counters at several observation points in Kamchatka.
Dmitrii Tverdyi   +2 more
doaj   +1 more source

Dual-Mode Microstrip Patch Bandpass Filters With Generalized Frequency Responses

open access: yesIEEE Access, 2019
A basic two-pole bandpass filter based on the dual-mode square patch resonator is presented and analyzed to realize generalized frequency responses in terms of two finite transmission zeros (FTZs).
Qing Liu   +4 more
doaj   +1 more source

Tidal Structures in the Mesosphere and Lower Thermosphere and Their Solar Cycle Variations

open access: yesAtmosphere, 2022
We studied the correlations between the migrating and non-migrating tides and solar cycle in the mesosphere and lower thermosphere (MLT) regions between 60° S and 60° N, which are in LAT-LON Earth coordinates, by analyzing the simulation datasets from ...
Ruidi Sun   +3 more
doaj   +1 more source

Complex analysis of pre-seismic geoacoustic and electromagnetic emission signals [PDF]

open access: yesE3S Web of Conferences, 2019
The article describes the results of complex analysis of pre-seismic signals of electromagnetic and geoacoustic radiation. We analyzed the frequency content of single sferics and geoacoustic impulses recorded before the Zhupanov earthquake that occurred ...
Lukovenkova Olga   +3 more
doaj   +1 more source

Research on small-scale structures of ice particle density and electron density in the mesopause region [PDF]

open access: yesAnnales Geophysicae, 2019
The formation of ice particle density irregularities with a meter scale in the mesopause region is explored in this paper by developing a growth and motion model of ice particles based on the motion equation of a variable mass object.
R. Tian   +12 more
doaj   +1 more source

Properties of electrons scattered on a strong plane electromagnetic wave with a linear polarization: classical treatment [PDF]

open access: yes, 2014
The relations among the components of the exit momenta of ultrarelativistic electrons scattered on a strong electromagnetic wave of a low (optical) frequency and linear polarization are established using the exact solutions to the equations of motion ...
A A Sokolov   +36 more
core   +2 more sources

Longitudinal differences in the statistical characteristics of ionospheric spread-F occurrences at midlatitude in Eastern Asia

open access: yesEarth, Planets and Space, 2019
Spread-F is known as the electron density inhomogeneous structures in F layer of ionosphere and can usually be classified as frequency spread-F (FSF) and range spread-F (RSF).
Ning Wang   +6 more
doaj   +1 more source

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