A 3D pyramid network for short ranged high data rate communications at 60 GHz [PDF]
, 2004 At millimeter-wave frequencies, the propagation characteristics approximate to that of light and high attenuation is usually incurred in the presence of people and objects.
Nix, AR +3 more
core +1 more source
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
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
doaj +1 more source
Measurements and simulation of ionospheric scattering on VHF and UHF radar signals : coherence times, coherence bandwidths and S4 [PDF]
, 2009 Irregularities in the electron density of the ionosphere cause phase and amplitude scintillation on transionospheric VHF and UHF radar signals, particularly at lower radio frequencies.
Cannon, Paul +5 more
core +1 more source
Analysis of ionospheric parameters during Solar events and geomagnetic storms
E3S Web of Conferences, 2016 The paper shows new methods of analysis of ionospheric and magnetic data applying the models of multicomponent constructions (MCM models) developed by the authors.
Mandrikova Oksana +3 more
doaj +1 more source
Radio wave propagation through the ionosphere [PDF]
, 2021 The non-transient plasma that is closest to Earth is found in the ionosphere at altitudes above approximately 60 km. It is observed either by ground-based, in-situ, or space-borne instrumentation and utilized to study and determine plasma phenomena and ...
Rexer, Theresa
core +1 more source
E3S Web of Conferences, 2016 The results of continuous measurements of AEF potential gradient by CS110 fluxmeter at Paratunka observatory are presented.
Khomutov Sergey +3 more
doaj +1 more source
Development of a methodology to estimate a region and waiting period for strong Kamchatka earthquakes based on seismic and ionospheric predictive signs [PDF]
E3S Web of Conferences, 2019 In this paper, an attempt is made to combine seismological and ionospheric predictive signs formed on the eve of earthquakes in order to develop a methodology for assessing the region and the time period of waiting for strong Kamchatka earthquakes with ...
Bogdanov Vadim, Pavlov Aleksey
doaj +1 more source
Methods and Algorithms of Subsurface Holographic Sounding
Remote Sensing, 2022 In our experiments, we develop and test portable multi-element receiver antenna arrays, electrically scanned in order to immediately obtain a recognizable image of subsurface objects.
A. V. Popov +5 more
doaj +1 more source
Study of nonthermal continuum patches : wave propagation and plasmapause study [PDF]
, 2011 Nonthermal continuum (NTC) radiation is believed to be emitted at the plasmapause and near the magnetic equator. We present a particular type of NTC radiation, referred to as NTC patch, which appears over a wide frequency range and within a relatively ...
P. M. E. Décréau +18 more
core +1 more source