Zobrazeno 1 - 10
of 94
pro vyhledávání: '"Vaclav Kvicera"'
Autor:
Muhammad Saeed Khan, Roberto Nebuloni, Martin Grabner, Carlo Capsoni, Erich Leitgeb, Vaclav Kvicera
Publikováno v:
Communications, Vol 14, Iss 2, Pp 27-32 (2012)
Liquid water content (LWC) is a microphysical parameter which is used to characterize fog/cloud and other particulates. In the absence of precipitation higher amount of LWC depicts dense fog, significantly reducing visibility and causing performance
Externí odkaz:
https://doaj.org/article/f28756389ea34324bc7ac9cbe0e38186
Autor:
Martin Grabner, Vaclav Kvicera
Publikováno v:
Advanced Microwave and Millimeter Wave Technologies Semiconductor Devices Circuits and Systems
Millimetre wave terrestrial wireless communication systems are becoming an increasingly important part of the telecommunication infrastructure. They offer a higher transmission capacity thanks to a higher available bandwidth when compared to systems
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6bee43616fda10740c223715855031de
http://www.intechopen.com/articles/show/title/rain-attenuation-on-terrestrial-wireless-links-in-the-mm-frequency-bands
http://www.intechopen.com/articles/show/title/rain-attenuation-on-terrestrial-wireless-links-in-the-mm-frequency-bands
Publikováno v:
EURASIP Journal on Wireless Communications and Networking, Vol 2011 (2011)
Externí odkaz:
https://doaj.org/article/5ed5a57e99fb490580204c29ce05346f
Autor:
Vaclav Kvicera, Martin Grabner
Publikováno v:
EURASIP Journal on Wireless Communications and Networking, Vol 2007 (2007)
Electromagnetic wave propagation research in frequency band 58 GHz was started at TESTCOM in Praha due to lack of experimentally obtained results needed for a realistic calculation of quality and availability of point-to-point fixed systems. Rain att
Externí odkaz:
https://doaj.org/article/b355df44faa544b893cd2e7871870847
Autor:
Milan Kvicera, Martin Grabner, Antonio Martellucci, Pavel Pechac, Pavel Valtr, Vaclav Kvicera
Publikováno v:
IEEE Transactions on Antennas and Propagation. 63:3179-3186
A detailed analysis of 1-year, long-term experimental measurements of signal enhancement at a terrestrial link between two cities in the Czech Republic is presented with respect to an interference and frequency coordination analysis based on recommen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::771cbe63e7b0d7743b876fa16337f827
https://doi.org/10.1109/tap.2015.2421940
https://doi.org/10.1109/tap.2015.2421940
Autor:
Vaclav Kvicera, Milan Kvicera, Tomas Korinek, Pavel Pechac, Antonio Martellucci, Pavel Valtr, Martin Grabner
Publikováno v:
IEEE Antennas and Wireless Propagation Letters. 14:1318-1321
Tests using three selected terrain diffraction models, three available experimental datasets and three digital elevation products with different horizontal and vertical resolutions were carried out to assess the role of input terrain profile in diffr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c973395272405fc8740714f7e1b45434
https://doi.org/10.1109/lawp.2015.2403867
https://doi.org/10.1109/lawp.2015.2403867
Autor:
Antonio Martellucci, Pavel Pechac, Vaclav Kvicera, Tomas Korinek, Pavel Valtr, Martin Grabner, Milan Kvicera
Publikováno v:
IEEE Transactions on Antennas and Propagation. 62:3693-3701
In response to the current need for a reliable interference and frequency coordination analysis, especially within the ground segment of satellite systems, atmospheric refraction and terrain diffraction phenomena play a key role from a radiowave prop
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9da103ab3a376e7703d9407fd1713290
https://doi.org/10.1109/tap.2014.2316283
https://doi.org/10.1109/tap.2014.2316283
Autor:
Milan Kvicera, Pavel Pechac, Vaclav Kvicera, Pavel Valtr, Martin Grabner, Antonio Martellucci
Publikováno v:
IEEE Transactions on Antennas and Propagation. 62:3714-3722
Atmospheric refractivity and its vertical gradient affect electromagnetic wave propagation in the atmosphere. Consequently, their statistics are needed for propagation predictions. New world maps of refractivity and its vertical gradient statistics a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94cbae31d60fa63a5bc3704a57b856fc
https://doi.org/10.1109/tap.2014.2317474
https://doi.org/10.1109/tap.2014.2317474
Autor:
Vaclav Kvicera, Martin Grabner
Publikováno v:
Journal of Lightwave Technology. 32:513-520
The multiple scattering effects of light propagation in rain and fog are investigated by means of numerical Monte Carlo photon propagation simulations. Rain and fog consisting of water droplets are described by realistic drop size distributions with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6448efd2bcac95361525beb1ff19ffa3
https://doi.org/10.1109/jlt.2013.2294356
https://doi.org/10.1109/jlt.2013.2294356
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 51:12-18
The aim of this paper is to show that the gradient of the vertical radio refractivity profile of air near the ground can be estimated from measurements of electromagnetic wave strength. Diffraction can be used as the basic physical principle for non-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd9ed4809b9b67fc965085f11e9e8f29
https://doi.org/10.1109/tgrs.2012.2199995
https://doi.org/10.1109/tgrs.2012.2199995