Title :
Time-Varying Stochastic Turbulence Model Considering Intermittency
Author :
Yuan, Guoyong ; Xu, Lin ; Liu, Yaping ; Yang, Shiping
Author_Institution :
Dept. of Phys., Hebei normal Univ., Shijiazhuang, China
Abstract :
Considering the intermittency of turbulence, the white noise as the stochastic driving term in time-varying stochastic turbulence model, which was supposed by Curtis R. Vogel, is replaced by a Levy random process. Phase screens can be obtained by solving the stochastic partial differential equation (PDE), and the corresponding point spread function (PSF) is also offered. These results describe that intermittency leads to the more extent distribution of PSF and more bad imaging quality.
Keywords :
optical images; partial differential equations; random processes; stochastic processes; turbulence; white noise; Levy random process; phase screens; point spread function; stochastic partial differential equation; time varying stochastic turbulence model; turbulence intermittency; white noise; Chaos; Differential equations; Integral equations; Navier-Stokes equations; Nonlinear equations; Optical imaging; Physics; Random processes; Stochastic processes; Stochastic resonance; L´{e}vy distribution; intermittency; turbulence;
Conference_Titel :
Chaos-Fractals Theories and Applications, 2009. IWCFTA '09. International Workshop on
Conference_Location :
Shenyang
Print_ISBN :
978-0-7695-3853-2
DOI :
10.1109/IWCFTA.2009.34
