Modelling and Analysis of FSO Ground-to-Train Communications for Straight and Curved Tracks

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Modelling and Analysis of FSO Ground-to-Train Communications for Straight and Curved Tracks

Popis výsledku v původním jazyce

In this work, a free space optical (FSO) link for the ground-to-train communications is proposed. Analytical analysis is carried out for the case of the straight track as well as curved rail tracks. We show that the transmitter divergence angle, the transmit power and the size of the concentration lens needs to increase for the curved section of the rail track compared to the straight track. We derive the analytical expression (11) for the received power level along the rail tracks based on the link geometry for the cases of straight and curved tracks. The received power variation is compared for two cases showing a similar dynamic range. In the worst case scenario when the radius of curvature is 120 m the transmit power at the base station (BS) needsto increase by over 2 dB when the concentration lens radius is increased by 5 times. Analyses also show that the received power increases with the radius of curvature. Finally, results are compared with the existing straight track model.

Název v anglickém jazyce

Modelling and Analysis of FSO Ground-to-Train Communications for Straight and Curved Tracks

Popis výsledku anglicky

In this work, a free space optical (FSO) link for the ground-to-train communications is proposed. Analytical analysis is carried out for the case of the straight track as well as curved rail tracks. We show that the transmitter divergence angle, the transmit power and the size of the concentration lens needs to increase for the curved section of the rail track compared to the straight track. We derive the analytical expression (11) for the received power level along the rail tracks based on the link geometry for the cases of straight and curved tracks. The received power variation is compared for two cases showing a similar dynamic range. In the worst case scenario when the radius of curvature is 120 m the transmit power at the base station (BS) needsto increase by over 2 dB when the concentration lens radius is increased by 5 times. Analyses also show that the received power increases with the radius of curvature. Finally, results are compared with the existing straight track model.

Druh

D - Stať ve sborníku

CEP obor

JA - Elektronika a optoelektronika, elektrotechnika

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2013

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of the European Conference on Antennas and Propagation, EuCAP 2013

ISBN

978-88-907018-3-2

ISSN

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e-ISSN

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Počet stran výsledku

5

Strana od-do

1-5

Název nakladatele

Neuveden

Místo vydání

Neuveden

Místo konání akce

Gothenburg (Sweden)

Datum konání akce

8. 4. 2013

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000327126002221