Atmospheric turbulences in Free Space Optics channel

Vitasek, Jan; Látal, Jan; Hejduk, Stanislav; Bocheza, Jiri; Koudelka, Petr; Skapa, Jan; Šiška, Petr; Vašinek, Vladimír

doi:10.1109/tsp.2011.6043763

Cited by 21 publications

(9 citation statements)

References 1 publication

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“…The model adopting (8) and (11) is valid for a point-to-point communication, as stated in (Dordova & Wilfert, 2009;Al Naboulsi et al, 2005), whereas in our case, with a receiver physical extension (point-to-receiver), a better approximation is provided by (Vitasek et al, 2011). In the latter, turbulence effect computation considers the diameter of receiver optical lens (i.e., effective receiver area): on the basis of mathematical analysis of turbulence in atmosphere presented by Larry and Andrews (Andrews, 2004), in the case of point-toreceiver photon path, by defining the receiver lens diameter as DR, Eq.…”

Section: Atmospheric Turbulencementioning

confidence: 79%

“…K62, K01, AlN04a, and AlN04r models utilized for comparison with simulated data can be found in (Mori & Marzano, 2015) and reference therein where k = 2π/⋋ is wave number and C 2 n is the index of refraction structure parameter, measured in [m −2/3 ]. The latter can be estimated through semi-empirical formulas moving from the knowledge of atmospheric factors like temperature, pressure, and humidity (Cherubini & Businger, 2013;d'Auria et al, 1993): it usually ranges from 10 −17 m −2/3 for weak turbulence to 10 −12 m −2/3 for a strong one (Vitasek et al, 2011). The linear attenuation corresponding to (8) is:…”

Section: Atmospheric Turbulencementioning

confidence: 99%

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Atmospheric scattering and turbulence modeling for ultraviolet wavelength applications

Leonardis

Mori

Bartolo

et al. 2020

Bull. of Atmos. Sci.& Technol.

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The recent proliferation of free-space optics (FSO) technologies and development of pertaining research have led to exploit the whole optical bandwidth from infrared and visible up to deep ultraviolet (UV) in communications. Within this context, we decided to focus on UV FSO communication and remote sensing potentials by presenting a physically based single-scattering channel model, UVatmoScat, aiming to include, with respect to previous analyses, most atmospheric variables like fog, precipitations, aerosols, and turbulence: indeed, they may affect the performance of UV links in short-range outdoor applications adopting non-line-of-sight (NLOS) configuration, as here considered. This analytical single-scattering model computes the temporal impulse response and path loss and has been validated through Monte Carlo. The former provides the frequency characteristic of UV-NLOS propagation links on varying of atmospheric conditions, with different NLOS geometries and receiver apertures. 3-dB bandwidth numerical results show UV-NLOS systems as more significantly affected by the link geometric features than weather perturbations, demonstrating supportive to the choice of frequency constantenvelope modulations. Nevertheless, meteorological perturbations have to be properly considered to better optimize the transmission power in UV telecommunications, as well as in ozone or aerosol ground-sensing applications. The proposed UVAtmoScat model is a suitable, self-consistent, and effective tool for this purpose.

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Section: Atmospheric Turbulencementioning

confidence: 79%

Section: Atmospheric Turbulencementioning

confidence: 99%

Atmospheric scattering and turbulence modeling for ultraviolet wavelength applications

Leonardis

Mori

Bartolo

et al. 2020

Bull. of Atmos. Sci.& Technol.

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“…Aperture averaging is the most valuable asset of Andrews's method. Due to this fact the turbulence attenuation is lower in comparison with other method [6,7,8,9]. The turbulence attenuation in dB is given by the relation.…”

Section: A Andrews's Methods and Rytov's Approximationmentioning

confidence: 99%

“…This type of station is used for communication at distance of 300 m and for data transmission rate of 4x2048 Mbps. The typical Bit Error Rate (BER) of atmospheric optical link is corresponding to the 10 -9 value and receiving optical head is using photodetector based on silica (Si) [9].…”

Section: Communication Stationmentioning

confidence: 99%

Influence of thermal turbulences on the optical beam of atmospheric optical link

Látal

Bojko

Vitasek

et al. 2013

2013 36th International Conference on Telecommunications and Signal Processing (TSP)

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This article is dealing with properties overview of thermal turbulences influencing optical beam of atmospheric optical link. The team of authors was focused on simulation of thermal turbulences caused by hotplate heater that heated water up to boiling point. Thermal turbulences were fanned by three high-speed ventilators and were kept in the wooden box to achieve stable conditions with the respect to effect on optical beam transmitted by atmospheric optical link. The measurement of the thermal turbulences influence was performed in distance of 3 and 10 meters from the optical head. The wooden box was placed directly in front of the optical head. Moreover the numerical profile of turbulent behavior was designed for air flow in the wooden box thanks to Ansys Fluent software application.

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“…The total attenuation is a combination of atmospheric attenuation and geometric losses. In the FSO link two known weather phenomena are scattering and turbulence which causes attenuation in the transmitted signal those results in high bit error rate or signal loss at the receiver end [4,5].…”

Section: Iintroductionmentioning

confidence: 99%

Investigation on free space optical communication for various atmospheric conditions

Jasmine¹,

Robinson²,

Malaisamy³

2015

2015 2nd International Conference on Electronics and Communication Systems (ICECS)

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Free space optical communication (FSO) provides high data rate by allowing light passed through the atmosphere. In Free Space Optical (FSO) Communication, the atmospheric conditions cause variations in the intensity and phase of the received signal which significantly reduces the performance of the system. In this paper, the effect of transmission distance with respect to the various atmospheric conditions such as air, haze, rain, fog and snow with different levels are investigated. Then, the Bit Error Rate (BER) while varying the link distance for various atmospheric conditions is analyzed. The transmission wavelength and date rate are 1550 nm and 2.5 Gbps is considered for investigation. Obviously, from the simulation it is noticed that the link distance is reduced while increasing the attenuation. This attempt will be useful for researchers and industries to select the optimum device for FSO with respect to the transmission distance.

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Atmospheric turbulences in Free Space Optics channel

Cited by 21 publications

References 1 publication

Atmospheric scattering and turbulence modeling for ultraviolet wavelength applications

Atmospheric scattering and turbulence modeling for ultraviolet wavelength applications

Influence of thermal turbulences on the optical beam of atmospheric optical link

Investigation on free space optical communication for various atmospheric conditions

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