搜索结果: 1-9 共查到“理学 atmospheric turbulence”相关记录9条 . 查询时间(0.5 秒)
Investigation on the scintillation reduction of elliptical vortex beams propagating in atmospheric turbulence
Atmospheric optics Free-space optical communication
2013/7/3
We numerically investigate the scintillation index of an elliptical vortex beam in both modest turbulence and strong turbulence. Numerical simulations are realized with random phase screen sc...
Experimental investigation on the scintillation index of vortex beams propagating in simulated atmospheric turbulence
Experimental investigation scintillation index vortex beams propagating simulated atmospheric turbulence
2013/7/3
The scintillation index of vortex beam in simu-lated atmospheric turbulence is experimentally investigated.The fluctuation of the intensity can be effectively reduced by vortex beams. In particular, t...
Towards Precision LSST Weak-Lensing Measurement - I: Impacts of Atmospheric Turbulence and Optical Aberration
Astronomical Instrumentation gravitational lensing dark matter cosmology
2010/11/12
The weak-lensing science of the Large Synoptic Survey Telescope (LSST)project drives the need to carefully model and separate the instrumental arti-facts from the intrinsic shear signal caused by grav...
Influence of vortex dynamics and atmospheric turbulence on the early evolution of a contrail
vortex dynamics atmospheric turbulence the early evolution of a contrail
2010/8/12
This study describes three-dimensional numerical simulations of the evolution of an aircraft contrail during the first 30 min following the emission of exhausts. The wake is modeled as a vortex pair d...
Empirical study of multifractal phase transitions in atmospheric turbulence
Empirical study multifractal phase transitions atmospheric turbulence
2009/11/16
We study atmospheric wind turbulence in the framework of universal multifractals, using several medium resolution (10 Hz) time series. We cut these original time series into 704 scale invariant realiz...
Non-Kolmogorov atmospheric turbulence and optical signal propagation
Non-Kolmogorov atmospheric turbulence optical signal propagation
2009/11/9
In the present review, we make an attempt to attract attention to the effect of non-Kolmogorov behavior of turbulence in various scales on the characteristics of electromagnetic waves propagation thro...
Analysis of phase coherence in fully developed atmospheric turbulence:Amazon forest canopy
phase coherence fully developed atmospheric turbulence Amazon forest canopy
2009/11/2
In a recent paper (Koga et al., 2007) it was shown that the intermittent nature of solar wind turbulence can be characterized by kurtosis and phase coherence index. In this paper, we apply these two n...
In the paper, a method to calculate the time evolution turbulence wavefronts based on the covariance method is theoretically presented in detail. According to it, the time-evolution wavefronts disturb...
Basic Pattern in Atmospheric Turbulence Model
atmospheric turbulence model Burgers-type
equations projective Riccati equations
2007/8/15
2004Vol.41No.6pp.845-848DOI:
Basic Pattern in Atmospheric Turbulence Model
FU Zun-Tao,1,2 ZHANG
Lin,1 LIU Shi-Da,1,2 and
LIU Shi-Kuo1
1 School of Physics, Peking Univer...