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Konu "Atmospheric Turbulence" için Elektronik ve Haberleşme Mühendisliği Bölümü listeleme

Konu "Atmospheric Turbulence" için Elektronik ve Haberleşme Mühendisliği Bölümü listeleme

Sırala: Sıra: Sonuçlar:

  • Receiver-aperture averaging of annular beams propagating through turbulent atmosphere 
    Kamacıoğlu, Canan; Baykal, Yahya; Yazgan, Erdem (Spie-Soc Photo-Optical Instrumentation Engineers, 2013-12)
    For an annular beam incidence, the power scintillation index in a weakly turbulent atmosphere is derived at the receiver plane, which has a Gaussian aperture. Employing this derivation, the receiver-aperture averaging ...
  • Scintillation analysis of multiple-input single-output underwater optical links 
    Gökçe, Muhsin Caner; Baykal, Yahya (Optical Soc Amer, 2016-08-01)
    Multiple-input single-output (MISO) techniques are employed in underwater wireless optical communication (UWOC) links to mitigate the degrading effects of oceanic turbulence. In this paper, we consider a MISO UWOC system ...
  • Scintillation analysis of truncated Bessel beams via numerical turbulence propagation simulation 
    Eyyuboğlu, Halil T.; Voelz, David; Xiao, Xifeng (Optical Soc Amer, 2013-11-20)
    Scintillation aspects of truncated Bessel beams propagated through atmospheric turbulence are investigated using a numerical wave optics random phase screen simulation method. On-axis, aperture averaged scintillation and ...
  • Scintillation behavior of Laguerre Gaussian beams in strong turbulence 
    Eyyuboğlu, Halil T.; Baykal, Yahya; Falits, A. (Springer, 2011-09)
    In strong atmospheric turbulence, the asymptotic on-axis scintillation behaviors of Laguerre Gaussian (LG) beams are examined. To arrive at the strong-turbulence solution, we utilize the existing filtering approach for ...
  • Scintillation index of flat-topped Gaussian laser beam in strongly turbulent medium 
    Gerçekçioğlu, Hamza; Baykal, Yahya (Optical Soc Amer, 2011-08)
    In a strongly turbulent medium, the scintillation index of flat-topped Gaussian beams is derived and evaluated. In the formulation, unified solution of Rytov method is utilized. Our results correctly reduce to the existing ...
  • Scintillation index of modified Bessel-Gaussian beams propagating in turbulent media 
    Eyyuboğlu, Halil T.; Baykal, Yahya; Sermutlu, Emre; Korotkova, Olga; Cai, Yangjian (Optical Soc Amer, 2009-02)
    The scintillation index is formulated for modified Bessel-Gaussian beams propagating in weakly turbulent media. Numerical calculations applied directly to the derived triple integral show that, for off-axis positions, the ...
  • Scintillations of higher-order laser beams in non-Kolmogorov medium 
    Baykal, Yahya (Optical Soc Amer, 2014-04-01)
    In an atmospheric medium that shows a non-Kolmogorov turbulence behavior, the variation of the on-axis scintillation index is evaluated when higher-order laser modes are used as the excitation. The Rytov method is employed ...
  • Scintillations of optical plane and spherical waves in underwater turbulence 
    Ata, Yalçın; Baykal, Yahya (Optical Soc Amer, 2014-07-01)
    The scintillation indices of optical plane and spherical waves propagating in underwater turbulent media are evaluated by using the Rytov method, and the variations in the scintillation indices are investigated when the ...
  • Sinusoidal Gaussian beam field correlations 
    Baykal, Yahya (IOP Publishing Ltd, 2012-07)
    Field correlations of sinusoidal Gaussian beams are formulated in turbulence, and specifically cos Gaussian (cG) and cosh Gaussian (chG) beam field correlations are evaluated versus the diagonal length at the receiver ...
  • Spectral shifts of general beams in turbulent media 
    Eyyuboğlu, Halil T.; Cai, Yangjian; Baykal, Yahya (IOP Publishing Ltd, 2008-01)
    Using the concept of generalized beam, by applying the extended Huygens-Fresnel principle, we derive the spectrum for partially coherent cosh-Gaussian, cos-Gaussian, Gaussian and annular Gaussian beams propagating in ...
  • Transmittance of partially coherent cosh-Gaussian, cos-Gaussian and annular beams in turbulence 
    Eyyuboğlu, Halil T.; Baykal, Yahya (Elsevier Science BV, 2007-10-01)
    Average relative power transmittance is evaluated, by incorporating atmospheric turbulence, for partially coherent cosh-Gaussian, cos-Gaussian, Gaussian and annular beams. For all the collimated versions of these beams, ...
  • Turbulence distance of radial Gaussian Schell-model array beams 
    Li, X.; Ji, Xiaoling; Eyyuboğlu, Halil T.; Baykal, Yahya (Springer, 2010-02)
    The effect of turbulence on the spreading of radial Gaussian Schell-model (GSM) array beams is studied quantitatively by examining the mean-squared beam width. The analytical expression for the turbulence distance z (T) ...