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Toplam kayıt 9, listelenen: 1-9

Adaptive Optics Correction of Scintillation in Underwater Medium

Baykal, Yahya (Taylor&Francis LTD, 2020-02-06)

Adaptive optics correction of the scintillation index of a Gaussian laser beam in underwater turbulence is studied. To introduce the adaptive optics correction, filter functions providing the piston, tilt and astigmatism ...
Anisotropy effect on multi-Gaussian beam propagation in turbulent ocean

Ata, Yalçın; Baykal, Yahya (Chinese Laser Press, 2018-08-10)

Average transmittance of multi-Gaussian (flat-topped and annular) optical beams in an anisotropic turbulent ocean is examined analytically based on the extended Huygens-Fresnel principle. Transmittance variations depending ...
Anisotropy effect on performance of subcarrier intensity modulated binary phase shift keying optical wireless communication links in weakly turbulent underwater channel

Baykal, Yahya; Gökçe, Muhsin Caner; Ata, Yalçın (Taylor&Francis LTD, 2019-10)

The effect of the anisotropy on the bit-error-rate (BER) performance of subcarrier intensity modulated (SIM) binary phase shift keying (BPSK) optical wireless communication (OWC) links operating in weakly turbulent underwater ...
Cross-beam scintillations in underwater medium

Baykal, Yahya (Spie-Soc Photo-Optical Instrumentation Engineers, 2016-11)

The fluctuation in the intensity, which is quantified by the scintillation index, is evaluated for cross beams when such beams propagate in an underwater medium experiencing turbulence. The variations in the scintillation ...
Effects of underwater turbulence on average transmittance of cos-Gaussian and cosh-Gaussian optical beams

Keskin, Ayşan; Baykal, Yahya Kemal (2021-11-02)

The impacts of underwater turbulence on the average optical transmittance are investigated when optical cosine-Gaussian and optical cosine-hyperbolic-Gaussian (cosh-Gaussian) beam propagate in weakly turbulent underwater ...
Laser array field correlations in underwater turbulence

Baykal, Yahya Kemal; Ata, Yalçın; Gökçe, Muhsin Caner (2022)

In underwater turbulent medium, field correlations are found when the incidence is a laser beam array. Variations of the field correlations against the variations in the ring radius of laser array beam, number of beamlets ...
Optical Propagation in Unguided Media

Baykal, Yahya (Springer - Verlag, 2016)

This chapter provides fundamentals of light propagation in unguided media and particularly discusses turbulence of transmission environment. The degradation effects of turbulence in the received signal of an OWC system are ...
Underwater turbulence, its effects on optical wireless communication and imaging: A review

Baykal, Yahya; Ata, Yalçın; Gökçe, Muhsin C. (2022-12)

Theory of optical turbulence in underwater medium and the effects of underwater turbulence on various applications done in underwater or under ocean are reviewed. A detailed survey of underwater turbulence studies in ...
Wave structure function and spatial coherence radius of plane and spherical waves propagating through oceanic turbulence

Lu, Lu; Ji, Xiaoling; Baykal, Yahya (Optical Soc Amer, 2014-11-03)

The analytical formulae for the wave structure functions (WSF) and the spatial coherence radius of plane and spherical waves propagating through oceanic turbulence are derived. It is found that the Kolmogorov five-thirds ...

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Konu "Underwater Turbulence" için listeleme

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