Intensity fluctuations due to an incoherent extended source seen through extended strong turbulence | Zendy

Rumsey V. H. | Zendy

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Intensity fluctuations due to an incoherent extended source seen through extended strong turbulence

Author(s) -

Rumsey V. H.

Publication year - 1976

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/rs011i006p00545

Subject(s) - scintillation , turbulence , physics , intensity (physics) , scintillometer , turbulence kinetic energy , spectral density , correlation function (quantum field theory) , computational physics , power law , function (biology) , optics , mathematics , mechanics , statistics , quantum mechanics , evolutionary biology , detector , dielectric , biology

The intensity correlation function for an extended incoherent source seen through strong turbulence is worked out assuming that the intensity randomization U ≫ 1. The scintillation index is found as a function of source angular size θ 0 , path length z , wave number k , strength of turbulence A , and slope of the assumed power law turbulence spectrum α (α = 11/3 for the Kolmogoroff case). The scintillation index drops to about 0.5 when A k 2 Z α θ 0 α−2 ≈ 1.

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