Physics
Scientific paper
Jan 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993angeo..11...29h&link_type=abstract
Annales Geophysicae (ISSN 0992-7689), vol. 11, no. 1, p. 29-39.
Physics
50
Atmospheric Scattering, Atmospheric Turbulence, Doppler Effect, Earth Ionosphere, Plasma Turbulence, Radar Scattering, Backscattering, Coherent Radar, Electromagnetic Scattering, High Frequencies
Scientific paper
The correlation length and time constant of turbulent plasma motion is determined using the coherent radar autocorrelation function (ACF) in the framework of collective wave scattering theory by a nonuniform plasma. It is concluded that the observed Doppler spectra have either a Lorentzian shape or a Gaussian shape according to the size of the correlation length of the plasma motion as compared to the observed fluctuation wavelength. Observations indicate that the Lorentzian shape is most common. When the correlation length of the plasma motion is much greater than the observed fluctuation wavelength, the Doppler spectrum becomes Gaussian shaped.
Baker Kile B.
Cabrit B.
Greenwald Ray A.
Gresillon D.
Hanuise Ch.
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