Search results for: PROPAGATION LOSSES

• IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION

  Journals

  ISSN: 0018-926X , eISSN: 1558-2221

• IEEE Antennas and Wireless Propagation Letters

  Journals

  ISSN: 1536-1225 , eISSN: 1548-5757

• IET Microwaves Antennas & Propagation

  Journals

  ISSN: 1751-8725 , eISSN: 1751-8733

• The finite-difference simulation of x-rays propagation through a system of lenses

  Publication

  • S. Kshevetskii
  • P. Wojda

  - Year 2014

  The propagation of X-ray waves through an optical system consisting of 33 aluminum X-ray refractive lenses is considered. For solving the problem, a finite-difference method is suggested and investigated. It is shown that very small steps of the difference grid are necessary for reliable computation of propagation of X-ray waves through the system of lenses. It is shown that the wave phase is a function very quickly increasing...

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• Calculation of the propagation loss in urban radio-access systems

  Publication

  • R. Katulski
  • A. Kiedrowski

  - IEEE ANTENNAS AND PROPAGATION MAGAZINE - Year 2008

  Zweryfikowano eksperymentalnie modele propagacyjne opracowane dla telefonii komórkowej w mieście, stosowane przy analizach projektowych systemów dostępowych. Przeprowadzono obszerne badania pomiarowe i zebrano prawie 19 tys. pomiarów. Na tej podstawie, stosując wielowymiarową analize regresji oraz zaproponowaną charakterystykę propagacyjną radiowych łączy dostępowych, opracowano nowy wielowariantowy model propagacyjny przeznaczony...

• Propagation Path Loss Modeling in Container Terminal Environment

  Publication

  • R. Katulski
  • J. Stefański
  • J. Sadowski

  - Journal of Telecommunications and Information Technology - Year 2009

  This paper describes novel method of path loss modeling for radio communication channels in container port area. Multi-variate empirical model is presented, based on multidimensional regression analysis of real path loss measurements from container terminal environment. The measurement instruments used in propagation studies in port area are also described.

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• Propagation Path Loss Modelling in Container Terminal Environment

  Publication

  • S. J. Ambroziak
  • R. Katulski
  • J. Sadowski
  • J. Stefański

  - Year 2011

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• Path Loss Modelling in the Untypical Outdoor Propagation Environments

  Publication

  • S. J. Ambroziak
  • R. Katulski

  - Year 2014

  In the paper three ways of path loss modelling in the untypical outdoor environments are presented. The exemplary untypical outdoor environment is analyzed. The investigated environment is characterized, and the measurement campaign are shortly described. The following models have been analyzed: the COST231 Walfisch-Ikegami model, the modified COST231Walfisch-Ikegami model tuned on the basis of empirical data, and the empirical...

• The finite difference methods of computation of X-rays propagation through a system of many lenses

  Publication

  • P. Wojda
  • S. Kshevetskii

  - Year 2016

  The propagation of X-ray waves through an optical system consisting of many beryllium X-ray refrac- tive lenses is considered. In order to calculate the propagation of electromagnetic in the optical sys- tem, two differential equations are considered. First equation for an electric field of a monochromatic wave and the second equation derived for complex phase of the same electric The propagation of X-ray waves through an optical system...

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• Propagation of Ornamental Plants

  Journals

  ISSN: 1311-9109