Physics
Scientific paper
Aug 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jatp...54..957z&link_type=abstract
Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 54, no. 7-8, July-Aug. 1992, p. 957-962.
Physics
1
Atmospheric Turbulence, Fractals, Ionospheric Propagation, Scintillation, Signal Analysis, Ionospheric Drift, Midlatitude Atmosphere
Scientific paper
The paper describes a fractal analysis of the amplitude scintillations of signals from a geostationary satellite which can be used to characterize ionospheric turbulence and turbulence in the turbopause. The algorithm by Grassberger and Procaccia (1983) is employed to analyze the scintillations, and the drift velocity of the diffraction pattern and the spectral characteristics of the signal are calculated. Fractal dimensionality is estimated at 3.26-4.36 for three of the seven calculations, and the results are interpreted as evidence of two regimes of ionospheric turbulence at midlatitudes. Localized turbulent regions or sources are inferred in regimes for which reliable estimates of low dimensionality are determined. This and the high dimensionality of the second regime are consistent with the notion of horizontally homogeneous ionospheric turbulence.
Fridman Sergei V.
Zvezdin V. N.
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