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Application of refractive scintillation theory to laser transmission through the atmosphere near ground level
Author(s) -
Booker Henry G.,
Vats Hari O.
Publication year - 1985
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/rs020i004p00833
Subject(s) - scintillation , optics , physics , scattering , computational physics , atmosphere (unit) , atmospheric optics , laser , intensity (physics) , meteorology , detector
On the basis of the work of Booker et al. (1985) and of Booker and MajidiAhi (1981), laser scintillation near ground level is discussed for divergent terminals at equal heights above a curved earth in an atmosphere possessing rms fluctuations of temperature from 0.03°C to 3°C. Except for short ranges and small temperature fluctuations, refractive scattering by large‐scale irregularities dominates diffractive scattering by small‐scale irregularities. Sample calculations are made of the intensity scintillation spectrum that occurs in the receiving plane. Simple formulae are given for the key scintillation parameters, namely, the outer scale, the Fresnel scale, the mean square fluctuation of phase, the intensity correlation scale, the twinkling scale, the rms fluctuation in the angles of arrival and departure, and the correlation bandwidth. The numerical consequences of these formulae are illustrated.