Availability of a free-space optical communication link operating under various atmospheric conditions

Ragulsky, V. V.; Sidorovich, V. G.

doi:10.1117/12.449810

Cited by 4 publications

(2 citation statements)

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“…Surface visibility data are the most commonly used form of data to estimate terrestrial Free Space Optics (FSO) availability in a given city 2,3 . In many cases, FSO links and networks are sited at levels above the surface, at the heights of high-rise buildings.…”

Section: Introductionmentioning

confidence: 99%

<title>Effects of low clouds on terrestrial free-space optics availability</title>

Baars

Witiw

Al-Habash

et al. 2002

Free-Space Laser Communication Technologies XIV

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Meteorological visibility data are the most commonly used data to estimate terrestrial Free Space Optics (FSO) availability in a given city. Visibility data can be used to estimate transmission efficiency at desired IR wavelengths using a semi-empirical equation 1 , and are often archived over many years allowing the calculation of long-term averages of availability. However, these data are taken at near-surface levels (historically within a few meters of the surface) and are therefore only appropriate for estimating FSO availability near the surface. Examination of long term cloud observations, including percent frequency of cloud ceilings occurring at various heights above the ground, show the importance of including low clouds into the consideration of FSO availability for any situation above about 30-m above ground level (AGL). In most locations, low clouds occurring very near the surface are relatively common-more so than surface-based fog (which is measured in terms of visibility). Thus, FSO availability will decrease with height, sometimes dramatically, in most cities. Cloud data is also archived over long periods of record and can thus be used to calculate long-term averages of availability.

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Section: Introductionmentioning

confidence: 99%

<title>Effects of low clouds on terrestrial free-space optics availability</title>

Baars

Witiw

Al-Habash

et al. 2002

Free-Space Laser Communication Technologies XIV

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“…performance can be degraded due to random and uncontrollable adverse atmospheric conditions along the transmission path, affecting its reliability to provide high transmission availability [13][14].…”

Section: List Of Tablesmentioning

confidence: 99%

Investigation and design of short-range free-space optical communication system for flight platforms

Heng¹

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I thank Dr Goh Cher Hiang for his support towards financing my degree and Miss Goh Lily for her administrative assistance rendered during the duration of the course. Without the support and assistance from them, DSO National Laboratories (DSO)/Satellite Engineering Centre (SEC) and Defence Science & Technology Agency (DSTA), my research would not have proceeded smoothly. I am especially grateful to Prof. Zhong Wende, my supervisor, for his invaluable guidance. This thesis would not have been possible without his effort and time spent on discussing my research work with me. His suggestions and insights allowed me to make progress on my research work. I also thank my family, who has always been my greatest source of encouragement and strength.

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PeterNet: an emergent technology based radio access network architecture for next generation cellular wireless systems

Ghosh

Basu

et al.

First International Conference on Broadband Networks

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Availability of a free-space optical communication link operating under various atmospheric conditions

Cited by 4 publications

References 0 publications

<title>Effects of low clouds on terrestrial free-space optics availability</title>

<title>Effects of low clouds on terrestrial free-space optics availability</title>

Investigation and design of short-range free-space optical communication system for flight platforms

PeterNet: an emergent technology based radio access network architecture for next generation cellular wireless systems

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