Results 21 to 30 of about 351,816 (303)
The Qujing incoherent scatter radar: system description and preliminary measurements
Earth, 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
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Overview of processing and analysis methods for pulse geophysical signals [PDF]
E3S Web of Conferences, 2020 The paper discusses the processing and analysis methods for the geoacoustic and electromagnetic emission pulse signals recorded for more than 20 years at the IKIR FEB RAS geodynamic proving ground (Kamchatka Peninsula).
Lukovenkova Olga +3 more
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Results of atmospheric-lithospheric observations of acoustic radiation in Kamchatka [PDF]
E3S Web of Conferences, 2019 Simultaneous atomspheric-lithospheric acoustic observations have been carried out during autumn-spring periods of 2017-2019 in Kamchatka at “Karymshina” observation site located in the zone of different-rank tectonic faults.
Larionov Igor +2 more
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Radio-Wave Propagation and Electromagnetic Surface Waves [PDF]
Proceedings of the National Academy of Sciences, 1947 A Discrepancy and Its Resolution. - The problem of the propagation of radio-waves along the surface of the (plane) earth was first treated in a celebrated paper by A. Sommerfeld (1909).(1) Let the (r, φ)-plane of a cylindric system of coordinates coincide with the plane of the earth surface and let the z-axis point vertically upward.
openaire +3 more sources
Sionna RT: Differentiable Ray Tracing for Radio Propagation Modeling [PDF]
2023 IEEE Globecom Workshops (GC Wkshps), 2023 Sionna™ is a GPU-accelerated open-source library for link-level simulations based on TensorFlow. Since release v0.14 it integrates a differentiable ray tracer (RT) for the simulation of radio wave propagation.
J. Hoydis +6 more
semanticscholar +1 more source
Operative center of the geophysical prognosis in Izmiran [PDF]
Annales Geophysicae, 2005 IZMIRAN was founded about 65 years ago with one of the goals of carrying out geomagnetic prognoses. More or less, this activity has been developed during its entire history, but about 6 years ago this aim became sufficiently feasible due to the ...
A. V. Belov +5 more
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Atmosphere, 2020 The paper is devoted to the description of observations over atmospheric and electric effects from volcanic eruptions on Kamchatka peninsula (Russia) and perspectives of their development.
Pavel P. Firstov +7 more
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Scaled Modeling and Measurement for Studying Radio Wave Propagation in Tunnels
Electronics, 2020 The subject of radio wave propagation in tunnels has gathered attention in recent years, mainly regarding the fading phenomena caused by internal reflections. Several methods have been suggested to describe the propagation inside a tunnel.
Jacob Gerasimov +7 more
semanticscholar +1 more source
Millimeter Wave and Sub-THz Indoor Radio Propagation Channel Measurements, Models, and Comparisons in an Office Environment [PDF]
IEEE Communications Letters, 2021 This letter provides a comparison of indoor radio propagation measurements and corresponding channel statistics at 28, 73, and 140 GHz, based on extensive measurements from 2014–2020 in an indoor office environment.
Yunchou Xing +2 more
semanticscholar +1 more source
Методика выделения информативных признаков в сигналах геоакустической эмиссии
Информатика и автоматизация, 2019 Исследования геоакустической эмиссии в сейсмоактивном регионе на Камчатке показывают, что при подготовке землетрясений и последующей релаксации поля локальных напряжений в пункте наблюдений в геоакустических сигналах возникают ярко выраженные импульсные ...
Yuri Igorevich Senkevich +3 more
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