Statistics – Computation
Scientific paper
Jan 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975rasc...10..115m&link_type=abstract
Radio Science, vol. 10, Jan. 1975, p. 115-119.
Statistics
Computation
31
Atmospheric Turbulence, Radio Scattering, Scintillation, Spectrum Analysis, Atmospheric Refraction, Kolmogoroff Theory, Plane Waves, Radio Stars, Radio Wave Refraction
Scientific paper
Spectra of intensity fluctuations resulting from the propagation of a plane wave through a thin but arbitrarily strong layer of refractive index variations are computed using the theory in a companion paper (Rumsey, 1975). A power law spectrum with index equal to 3 was assumed for the turbulence or refractive index spectrum. The intensity spectra were found to duplicate the Born approximation for weak scattering and the high frequency approximation for strong scattering. The scintillation index, or the rms intensity fluctuation, saturates at unity for a plane wave. The scintillation index has been computed for sources of various sizes. The results of the computation are in remarkable agreement with the results of radio star scintillation measurements.
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