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Konu "Scintillation" için Elektronik ve Haberleşme Mühendisliği Bölümü listeleme

Konu "Scintillation" için Elektronik ve Haberleşme Mühendisliği Bölümü listeleme

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  • Propagation analysis of Ince-Gaussian beams in turbulent atmosphere 
    Eyyuboğlu, Halil T. (Optical Soc Amer, 2014-04-10)
    We analyze the properties of Ince-Gaussian beams propagating in turbulent atmosphere. Due to analytic difficulties, this analysis is done with the aid of a random phase screen setup. Intensity profile, beam size, and the ...
  • Propagation of an Airy beam through the atmosphere 
    Ji, X.L.; Eyyuboğlu, Halil T.; Ji, Guangming; Xiaoling, Ji (Optical Soc Amer, 2013-01-28)
    In this paper, the effect of thermal blooming of an Airy beam propagating through the atmosphere is examined, and the effect of atmospheric turbulence is not considered. The changes of the intensity distribution, the ...
  • Propagation properties of anomalous hollow beams in a turbulent atmosphere 
    Cai, Yangjian; Eyyuboğlu, Halil T.; Baykal, Yahya (Elsevier Science, 2008-11-01)
    Propagation of circular and elliptical anomalous hollow beams in a turbulent atmosphere is investigated in detail. Based on the extended Huygens-Fresnel integral, analytical formulae for the average irradiance of circular ...
  • 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 hypergeometric Gaussian beam via phase screen method 
    Eyyuboğlu, Halil T. (Elsevier Science Bv, 2013-11-15)
    We give a scintillation treatment of hypergeometric Gaussian beams via the use of random phase screens. In particular, we analyse the on-axis, point-like and aperture averaged power scintillation characteristics of this ...
  • Scintillation behavior of Airy beam 
    Eyyuboğlu, Halil T. (Elsevier Science Ltd, 2013-04)
    We make an analysis on scintillation behavior of Airy beam using the Rytov method. To this end, scintillation index is formulated for a single receiver coordinate location. Area scintillation expressions are also derived. ...
  • Scintillation behaviour of vortex beams in strong turbulence region 
    Eyyuboğlu, Halil T. (Taylor&Francis LTD, 2016)
    We study the scintillation behaviour of vectorial vortex beams in strong turbulence region. For this purpose, a list of vortex source beams is prepared. Then their scintillation performances are analysed one by one using ...
  • Scintillation index of a multi-Gaussian Schell-model beam in turbulent atmosphere 
    Yuan, Yangsheng; Liu, Xianlong; Wang, Fei; Chen, Yahong; Cai, Yangjian; Qu, Jun; Eyyuboğlu, Halil T. (Elsevier Science Bv, 2013-09-15)
    Multi-Gaussian Schell-model (MGSM) beam was introduced recently [Sahin and Korotkova, Opt. Lett. 37 (2012) 2970; Korotkova et al., J. Opt. Soc. Am. A 29 (2012) 2159]. In this paper, an explicit expression for the scintillation ...
  • Scintillation properties of a truncated flat-topped beam in a weakly turbulent atmosphere 
    Liu, Xianlong; Liang, Chunhao; Yuan, Yangsheng; Cai, Yangjian; Eyyuboğlu, Halil T. (Elsevier Science Ltd, 2013-02)
    We derive derive an explicit expression for the scintillation index of a truncated flat-topped (FT) beam in a weakly turbulent atmosphere. Under suitable conditions, the derived formula reduces to the expression for the ...
  • SNR bounds of FSO links and its evaluation for selected beams 
    Eyyuboğlu, Halil T.; Bayraktar, Mert (Taylor&Francis Ltd, 2015)
    We formulate the signal-to-noise ratio (SNR) for free-space optical links. Upon inserting typical operating parameters, it is seen that SNR well approximates to the inverse of aperture averaged scintillation parameter. By ...
  • Türbülanslı ortamda yayılan super Lorentz-Gauss laser demetleri için ber analizi 
    Gökçe, Muhsin Caner; Sarı, Filiz; Özek, Faruk (Gazi Univ, Fac Engineering Architecture, 2013-12)
    Çalışmada, türbülanslı ortamda yayılan super Lorentz-Gauss laser demetlerinin yatay iletim uzaklıklarındaki BER - SNR değişimi hesaplandı. BER hesaplamalarında kullanılan pırıldama indisleri, genişletilmiş HuygensFresnel ...