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Перегляд Радиофизика и радиоастрономия за назвою

Репозиторій DSpace/Manakin

Перегляд Радиофизика и радиоастрономия за назвою

Сортувати за: Порядок: Результатів:

  • Earth – Atmosphere – Geospace as an Open Nonlinear Dynamical System 
    Chernogor, L.F.; Rozumenko, V.T. (2008)
    The concept of the Earth-atmosphere-ionosphere-magnetosphere (EAIM) system as a complex open dissipative nonlinear dynamical system whose most important property is trigger mechanisms for energy releases has been validated, ...
  • Effect of Ultra-Short Pulse Signals on Information System Survivability 
    Serkov, A.A. (Радиофизика и радиоастрономия, 2002)
    Here, the problems dealt with a survivability simulation of information systems under destabilizing electromagnetic effect have been considered. Proposed was the graph-analytic model of the information system and the ...
  • Electrodynamic Characteristics of Multilayered System of Plane Screens with a Slot 
    Kaliberda, M.E.; Lytvynenko, L.M.; Pogarsky, S.A. (Радиофизика и радиоастрономия, 2011)
    The diffraction by a finite and semi-infinite system of plane screens with a slot is considered. The problem is solved with the operator approach. The possibility of screens shift in the plane of their displacement is ...
  • Electromagnetic Characteristics of the Simplest Strip System 
    Koshovy, G.I. (Радиофизика и радиоастрономия, 2003)
    The main electromagnetic characteristics of the noncoplanar system of two narrow strips with parallel edges are investigated. They are determined on the basis of the integral equation technique, using the local coordinate ...
  • Empirical Estimate for the Element Number of a Nonredundant Configuration on a Hexagonal Telescope Aperture 
    Kopilovich, L.E. (Радиофизика и радиоастрономия, 2006)
    The empirical upper estimate is obtained for the number of elements of a nonredundant configuration on a given size hexagonal telescope aperture. Nonredundancy means that all the differences between vector radii of the ...
  • Empirical Estimate for the Maximum Element Number of a Nonredundant Configuration on Square Array Antenna 
    Kopilovich, L.E. (2009)
    The maximum number of elements of a nonredundant configuration on a square array antenna is estimated empirically employing the investigated structure of differences between the elements of the configuration mapping onto the scan.
  • Enhancement of the Quantum Dot Luminescence in All-Dielectric Metamaterial 
    Khardikov, V.V.; Prosvirnin, S.L. (Радиофизика и радиоастрономия, 2013)
    We propose a simple design of an all-dielectric silicon-based planar metamaterial that manifests an extremely sharp resonant reflection and transmission at the wavelength of about 1550 nm due to both low dissipative losses ...
  • Estimating Cloud and Rain Parameters from Doppler Radar Data 
    Bezvesilniy, O.O.; Peters, G.; Vavriv, D.M. (Радиофизика и радиоастрономия, 2003)
    Real-time mapping of the parameters of precipitating water clouds and rain making use of a vertically-directed Doppler radar is an important problem. In this paper, an algorithm based on an independent estimation of the ...
  • Evolution Equations for the Time-Domain Modes in Lossy Waveguides 
    Tretyakov, O.A. (Радиофизика и радиоастрономия, 2002)
    Complete set of the time-domain modes is presented for a waveguide regular geometrically along its axis Oz . The waveguide under study may have an arbitrary closed singly connected contour L of its cross section. Waveguide ...
  • Excitation and Propagation of a Fast Pulse Guided Wave in a Circular Dielectric Waveguide 
    Legenkiy, M.N.; Butrym, A.Yu. (Радиофизика и радиоастрономия, 2013)
    It is shown that a pulse signal in a circular dielectric waveguide is partitioned into slow and fast waves. The fast wave propagates along the dielectric surface with the speed of light in free space and creates a precursor ...
  • Experimental Ka-Band Ground-Based SAR System 
    Bezvesilniy, O.O.; Vavriv, D.M.; Volkov, V.A.; Kravtsov, A.A.; Bulakh, E.V.; Vinogradov, V.V.; Sekretarov, S.S. (Радиофизика и радиоастрономия, 2015)
    An experimental ground-based synthetic aperture radar (GB-SAR) system operating at Ka-band has been developed. The system is designed to be operated from a top a hill or from a building roof, etc. for imaging the underlying ...
  • F-рассеяние как индикатор тропосферно-ионосферного взаимодействия 
    Зализовский, А.В.; Ямпольский, Ю.М. (2007)
    Исследованы тропосферно-ионосферные связи на примере эффекта ионосферного F-рассеяния. Рассматриваемые экспериментальные данные получены в 1993 - 2003 гг. на Украинской антарктической станции "Академик Вернадский" (до 6 ...
  • GaAs диоды Ганна с AlAs-GaAs-AlAs резонансно туннельным катодом 
    Стороженко, И.П.; Прохоров, Э.Д.; Боцула, О.В. (Радиофизика и радиоастрономия, 2006)
    На основе двухтемпературной модели междолинного переноса электронов в GaAs разработана методика исследования диодов Ганна с туннельной инжекцией электронов из катодного контакта. Изучены физические явления, связанные с ...
  • High Sensitivity 0.5 to 19.5 GHz Receiver with 1.1-GHz Instantaneous Bandwidth 
    Volkov, V.V.; Vavriv, D.M.; Bulakh, E.V.; Kravtsov, A.A. (Радиофизика и радиоастрономия, 2014)
    A wideband high sensitivity microwave receiver operating within 0.5 to 19.5 GHz and providing a 1.1-GHz instantaneous bandwidth is described. The receiver shows a noise figure as low as 10 dB and the input third-order ...
  • Impulse Source in the Vicinity of a Convex Impedance Body: Minimization of the Field in the Shadow Region 
    Zvyagintsev, A.A.; Ivanov, A.I.; Katkov, D.V. (Радиофизика и радиоастрономия, 2002)
    The work deals with the optimization problem of impulse source field minimization in the shadow region of a convex body with variable surface impedance. The optimal impedance is searched using uniform asymptotic methods ...
  • Low-Frequency Carbon Recombination Lines 
    Konovalenko, A.A.; Stepkin, S.V.; Shalunov, D.V. (Радиофизика и радиоастрономия, 2001)
    The low-frequency carbon recombination lines (with wavelengths up to twenty five and even more meters) became important means of the low-density interstellar plasma diagnostics. An impressive amount of astrophysical ...
  • Magnetron Transmitters for High-Resolution Radars 
    Belikov, A.A.; Kozhyn, R.V.; Trush, B.V.; Vavriv, D.M.; Volkov, V.A. (Радиофизика и радиоастрономия, 2002)
    95 GHz, 2 kW radar transmitters with the output pulse duration of 10 ns and the pulse repetition frequency of 40 kHz are presented. The transmitters are based on the spatial-harmonic magnetron with cold secondaryemission ...
  • Main Capabilities and Features of Ultra Wideband (UWB) Radars 
    Immoreev, I.J. (Радиофизика и радиоастрономия, 2002)
    This review paper discusses the differences between ultra wideband (UWB) radars and the conventional narrow-band radars. The features are shown of the generation, radiation and processing of UWB radar signals evoked by the ...
  • Mathematical Model of Spatial-Harmonic Magnetron with Cold Secondary-Emission Cathode 
    Schuenemann, K.; Sosnytskiy, S.V.; Vavriv, D.M. (Радиофизика и радиоастрономия, 2000)
  • Mathematical Simulation of Ultra Wideband Signals Scattered by Mines Buried in Ground. Algorithms of Mine Detection and Identification 
    Sukharevsky, O.I.; Zalevsky, G.S.; Muzychenko, A.V. (Радиофизика и радиоастрономия, 2002)
    Method of mathematical simulation of ultra wideband signals scattered by metal or dielectric mine and other subsurface objects located in ground or other medium is described. Method allows for getting electromagnetic signals ...

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