A phase screen model for simulating numerically the propagation of a laser beam in rain

Journal Article · Wed Sep 30 00:00:00 EDT 2009 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2009V039N09ABEH013789· OSTI ID:21471103

Lukin, I P; Rychkov, D S; Falits, A V ^[1]; Lai, Kin S; Liu, Min R ^[2]

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1. Institute of Atmospheric Optics, Siberian Branch, Russian Academy of Sciences, Tomsk (Russian Federation)
2. DSO National Laboratories 20 (Singapore)

The method based on the generalisation of the phase screen method for a continuous random medium is proposed for simulating numerically the propagation of laser radiation in a turbulent atmosphere with precipitation. In the phase screen model for a discrete component of a heterogeneous 'air-rain droplet' medium, the amplitude screen describing the scattering of an optical field by discrete particles of the medium is replaced by an equivalent phase screen with a spectrum of the correlation function of the effective dielectric constant fluctuations that is similar to the spectrum of a discrete scattering component - water droplets in air. The 'turbulent' phase screen is constructed on the basis of the Kolmogorov model, while the 'rain' screen model utiises the exponential distribution of the number of rain drops with respect to their radii as a function of the rain intensity. Theresults of the numerical simulation are compared with the known theoretical estimates for a large-scale discrete scattering medium. (propagation of laser radiation in matter)

• OSTI ID: 21471103
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 39, Issue 9; Other Information: DOI: 10.1070/QE2009v039n09ABEH013789; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AIR
AMPLITUDES
BEAM TRANSPORT
COMPUTERIZED SIMULATION
CORRELATION FUNCTIONS
DIELECTRIC PROPERTIES
DISTRIBUTION
DROPLETS
EARTH ATMOSPHERE
FLUCTUATIONS
LASER RADIATION
PERMITTIVITY
PHOTON BEAMS
PRECIPITATION
RAIN
SCATTERING
SPECTRA
TURBULENCE
WATER
ATMOSPHERIC PRECIPITATIONS
BEAMS
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
FLUIDS
FUNCTIONS
GASES
HYDROGEN COMPOUNDS
OXYGEN COMPOUNDS
PARTICLES
PHYSICAL PROPERTIES
RADIATIONS
SEPARATION PROCESSES
SIMULATION
VARIATIONS