Temat: channel modelling - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Transmisja danych w kanale radiowym - wybrane zagadnienia w środowisku Vissim
The transmission of the data in the radio channel- chosen problems in Vissim environment
Autorzy:: Noga, K. M.
Powiązania:: https://bibliotekanauki.pl/articles/267757.pdf
Data publikacji:: 2014
Wydawca:: Politechnika Gdańska. Wydział Elektrotechniki i Automatyki
Tematy:: propagacja sygnału radiowego
modele kanału transmisyjnego
zaniki sygnału
radio wave propagation
channel modelling
fading signals
Opis:: W artykule przedstawiono pakiet dydaktyczny prezentujący wybrane zagadnienia z zakresu transmisji danych w kanale radiowym. Zostaną zaprezentowane modele kanałów, symulacje procesów fizycznych zachodzących podczas transmisji, tj. losowych fluktuacji sygnału, wielodrogowości, kodowania zabezpieczającego przed błędami, dekodowania.
This paper presents the didactic packet which makes possible presenting chosen problems in digital transmission. The packed presents models of radio communication channels, the simulations of physical processes setting during the transmission, among others the random fluctuations of the signal, multipath, protection coding, decoding.
Źródło:: Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej; 2014, 40; 77-80
1425-5766
2353-1290
Pojawia się w:: Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Modelling of force action on ellipsoid-shape seed in pneumo-electric separator channel
Autorzy:: Kovalyshyn, S.
Nishchenko, I.
Dadak, V.
Powiązania:: https://bibliotekanauki.pl/articles/411434.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Oddział w Lublinie PAN
Tematy:: ellipsoid-shape seeds
pneumo-electric channel
modelling
Opis:: The behavior of seed in pneumo-electric separator channel is revealed. The characteristic of the active forces on ellipsoid-shape seed is demonstrated. Due to a differential equations you can find the coordinates of seed mixtures particles’ motion to determine the conditions under which we get maximum effect.
Źródło:: ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2014, 3, 4; 83-86
2084-5715
Pojawia się w:: ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: The impact of tides and waves on near-surface suspended sediment concentrations in the English Channel
Autorzy:: Guillou, N.
Rivier, A.
Chapalain, G.
Gohin, F.
Powiązania:: https://bibliotekanauki.pl/articles/48548.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: suspended sediment concentration
spatial variability
temporal variability
coastal water
English Channel
bathymetry
numerical modelling
ROMS model
MERIS data
Opis:: Numerous ecological problems of continental shelf ecosystems require a refined knowledge of the evolution of suspended sediment concentrations (SSC). The present investigation focuses on the spatial and temporal variabilities of near-surface SSC in coastal waters of the English Channel (western Europe) by exploiting numerical predictions from the Regional Ocean Modeling System ROMS. Extending previous investigations of ROMS performances in the Channel, this analysis refines, with increased spatial and temporal resolutions, the characterization of near-surface SSC patterns revealing areas where concentrations are highly correlated with evolutions of tides and waves. Significant tidal modulations of near-surface concentrations are thus found in the eastern English Channel and the French Dover Strait while a pronounced influence of waves is exhibited in the Channel Islands Gulf. Coastal waters present furthermore strong SSC temporal variations, particularly noticeable during storm events of autumn and winter, with maximum near-surface concentrations exceeding 40 mg l1 and increase by a factor from 10 to 18 in comparison with time-averaged concentrations. This temporal variability strongly depends on the granulometric distribution of suspended sediments characterized by local bimodal contributions of silts and sands off coastal irregularities of the Isle of Wight, the Cotentin Peninsula and the southern Dover Strait.
Źródło:: Oceanologia; 2017, 59, 1
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Measurements and numerical modelling of surface waves in front of the port of split
Autorzy:: Leder, N.
Duplančić Leder, T.
Lončar, G.
Powiązania:: https://bibliotekanauki.pl/articles/116487.pdf
Data publikacji:: 2020
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: activities in port area
numerical modelling
surface waves
port of split
Bracki Kanal Channel
Adriatic Sea
Aladin-CRO Model
sirocco
Opis:: Wind generated surface waves were measured at V2 station (φ=43°29.3’ N; λ=16° 27.9’ E) in the Brački Kanal Channel area of the Middle Adriatic, in front of the port of Split. This was undertaken in the time interval from November 2007 to June 2008, by using Datawell MKIII waverider with all its compo-nents. For the analysis and description of extreme sea states maximum recorded wave height Hmax and sig-nificant wave height H1/3 were presented as well as associated wave spectra. The measurement results show that much larger waves appear in the open Adriatic compared to the Middle Adriatic channel area. Numerical modelling of wave generation in the Brački Kanal Channel area and wider island area of the Middle Adriatic Sea was performed by using Mike 21/SW numerical model. Wind field used for the forcing in numerical simulations relies on the results of the prognostic atmospheric model Aladin-CRO. For verification of model results, results of measurement at a waverider station V2 located in front of the port of Split were used. It was concluded that measured and modelled significant wave heights were very well matched.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2020, 14, 1; 191-197
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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