Simulation of extended phase screens in problems of optical wave propagation through the atmosphere

Воронцов, А. М.; Paramonov, Petr Vladimirovich

doi:10.1007/s11141-006-0034-0

Cited by 5 publications

(3 citation statements)

References 4 publications

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“…At present, the influence of the turbulent-scale irregularities is well known. Some papers also confirm the influence of large-scale irregularities on radio measurements [1][2][3][4][5]. In this paper, we consider the influence of mesoscale irregularities.…”

Section: Introductionmentioning

confidence: 93%

Study of mesoscale irregularities of the refraction coefficient of radiowaves in the troposphere by the methods of numerical simulation

Teptin

Khutorova

Zinin

et al. 2010

Radiophys Quantum El

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We propose a model of the mesoscale irregular structure of the refraction coefficient of radiowaves and its dynamics in the real atmosphere at altitudes of up to 20 km. This model was verified according to multiyear continuous measurements. The obtained dynamics of the refraction coefficient shows considerable horizontal, vertical, and temporal variability of the mesoscale irregular structure as well as anisotropy of the horizontal spatial structure of the refraction coefficient, which is determined by the fields of wind speed and the synoptic gradient of atmospheric pressure. Dependences of the disturbance of the optical length of the radio paths on the path length, zenith angle, time of the day, and meteorological conditions are found.

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Section: Introductionmentioning

confidence: 93%

Study of mesoscale irregularities of the refraction coefficient of radiowaves in the troposphere by the methods of numerical simulation

Teptin

Khutorova

Zinin

et al. 2010

Radiophys Quantum El

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“…To model object motion we used the phase screens with an infinite length over one of the coordinates. 10 …”

Section: Theoretical Modelmentioning

confidence: 99%

<title>Estimates of the error caused by atmospheric turbulence in determining object's motion speed using a digital camera</title>

et al. 2006

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The paper considers the error caused by atmospheric turbulence, in determining the motion speed of an object by using its successive images recorded on a matrix of a digital camera. Numerical modeling of the image of a moving object in successive time moments is performed. Fluctuation variance of the image mass centre affecting the measurement error is calculated. Error dependences on the distance to the object and path slope angle are obtained for different turbulence models. Considered are the situations, when the angular displacement of the object between two immediate shots of the digital camera is greater than the isoplanatism angle as well as the situations when the angular displacement is smaller than this angle.

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“…In this case, a limitation to the lateral size of the phase screens set on a finite computational grid correspondingly limits the size of atmospheric inhomogeneities (to several tens of meters) which are considered in simulation by common methods. As was shown earlier [21], the use of turbulent screens with an outer scale larger than the screen size [22][23][24] does not allow the effect of real atmospheric large-scale inhomogeneities to be considered. For scales much larger than the beam cross-section, only an averaged variation in the air density with altitude is considered.…”

Section: Introductionmentioning

confidence: 99%

A numerical simulation method for laser radiation propagating through large-scale atmospheric inhomogeneities

Dudorov

Колосов

2014

SPIE Proceedings

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A new approach is suggested to the numerical simulation of laser beam propagation through large-scale atmospheric inhomogeneities. Within this approach, the propagation medium is represented as a continuous 3D distribution of largescale inhomogeneities and a set of common 2D phase screens. A new highly effective simulation method with accounting for the effect of large-scale inhomogeneities is suggested within the aberration-free approximation. It is shown that experimentally observed large-scale inhomogeneities can strongly affect long-distance radiation propagation.

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Simulation of extended phase screens in problems of optical wave propagation through the atmosphere

Cited by 5 publications

References 4 publications

Study of mesoscale irregularities of the refraction coefficient of radiowaves in the troposphere by the methods of numerical simulation

Study of mesoscale irregularities of the refraction coefficient of radiowaves in the troposphere by the methods of numerical simulation

<title>Estimates of the error caused by atmospheric turbulence in determining object's motion speed using a digital camera</title>

A numerical simulation method for laser radiation propagating through large-scale atmospheric inhomogeneities

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