Results 21 to 30 of about 18,652 (263)
Tidal Structures in the Mesosphere and Lower Thermosphere and Their Solar Cycle Variations
Atmosphere, 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
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Complex analysis of pre-seismic geoacoustic and electromagnetic emission signals [PDF]
E3S 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
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Research on small-scale structures of ice particle density and electron density in the mesopause region [PDF]
Annales 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
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Earth, 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
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Design of Low-Profile Frequency-Selective Rasorbers Based on Three-Legged Loaded Element
International Journal of Antennas and Propagation, 2020 A novel low-profile dual-polarization frequency-selective rasorber (FSR) with a transmissive window in the absorption band is proposed in this paper. Based on the equivalent circuit model (ECM), the principles of the impedance design are theoretically ...
Yu Qiang +3 more
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Advances in Materials Science and Engineering, 2015 An equalizer based on multilayered half mode substrate integrated waveguide (HMSIW) structures with high Q-factor, low loss, and compact size is proposed for the first time.
Shuxing Wang +4 more
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Spread-F occurrences and relationships with foF2 and h′F at low- and mid-latitudes in China
Earth, Planets and Space, 2018 Ionospheric irregularities are an important phenomenon in scientific studies and applications of radio-wave propagation. Spread-F echoes in ionograms are a type of high-frequency band irregularities that include frequency spread-F (FSF), range spread-F ...
Ning Wang +4 more
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Exploring Marine Atmospheric Ducts: Current Sensing and Emerging Trends
Remote SensingTropospheric refraction significantly impacts the propagation of ultrashort- and microwave-frequency radio waves over marine environments. Atmospheric ducting, the most common super-refractive structure, allows radio waves to travel over the horizon ...
Jin-Peng Zhang +5 more
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Using Multilayered Substrate Integrated Waveguide to Design Microwave Gain Equalizer
Advances in Materials Science and Engineering, 2014 This paper presents the design and experiment of a novel microwave gain equalizer based on the substrate integrated waveguide (SIW) technique. The proposed equalizer is formed by an SIW loaded by SIW resonators, which has very compact structure and can ...
Yongfei Wang +3 more
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Electromagnetic Guided Wave in Goubau Line with Graphene Covering: TE Case
Photonics, 2023 This paper focuses on the problem of monochromatic terahertz TE-polarized wave propagation in a special type of circle cylindrical waveguides, the so-called Goubau line.
Stanislav Tikhov, Dmitry Valovik
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