Наукова електронна бібліотека
періодичних видань НАН України

Перегляд Радиофизика и радиоастрономия за назвою

Репозиторій DSpace/Manakin

Перегляд Радиофизика и радиоастрономия за назвою

Сортувати за: Порядок: Результатів:

  • Dealiasing Doppler Spectra in Meteorological Radars 
    Sosnytskiy, S.V. (Радиофизика и радиоастрономия, 2012)
    A method of dealiasing of Doppler spectra is proposed. The method is based on the fact that overlaid spectral components of the received signals are statistically independent, and that there is no overlay in range. For ...
  • Decameter pulsar/transient survey of northen sky. First results 
    Vasylieva, I.Y.; Zakharenko, V.V.; Konovalenko, A.A.; Zarka, P.; Ulyanov, O.M.; Shevtsova, A.I.; Skoryk, A.O. (Радиофизика и радиоастрономия, 2014)
    The decameter pulsar/transient survey is now being made using the UTR-2 radio telescope. The survey strategy and parameters, equipment characteristics, data processing algorithms as well as preliminary results are described. ...
  • Detection of ultrawideband radar signals scattered from complex targets 
    Immoreev, I.J.; Fedotov, D.V. (Радиофизика и радиоастрономия, 2002)
    The questions of detection of radar-tracking signals are discussed, which parameters are unknown. The method for detection of radar signals which parameters are unknown is considered. The method is based on correlation ...
  • Diffraction of Modulated Electromagnetic Impulses on Periodical Grating 
    Gavrilova, T.V.; Sidorenko, Yu.B. (Радиофизика и радиоастрономия, 2002)
    The problem of diffraction of amplitude-modulated impulses with linear frequency modulation on the planar periodical grating consisting of infinitely thin and ideally conducting strips has been considered. The ability to ...
  • Dispersive Effect Correction for Ultra-Short Impulse Signals Using Joint Time-Frequency Transforms 
    Deng, H. (Радиофизика и радиоастрономия, 2002)
    The Joint Time-Frequency Transforms (JTFT) are employed to identify the time-frequency distribution of dispersed ultra short impulse signals transmitted through unknown propagation channels in the presence of noise. The ...
  • 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 ...

Пошук


Розширений пошук

Перегляд

Мій обліковий запис