Geometrical control of the ratio of intensity and phase scintillation indices

Details Geometrical control of the ratio of intensity and phase scintillation indices Geometrical control of the ratio of intensity and phase scintillation indices

Oct 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980jatp...42..775f&link_type=abstract

Journal of Atmospheric and Terrestrial Physics, vol. 42, Sept.-Oct. 1980, p. 775-782.

Physics

5

Ionospheric Propagation, Scintillation, Signal Transmission, Spacecraft Communication, Auroral Zones, Equatorial Atmosphere, Ground Stations, Midlatitude Atmosphere, Plasma Density

Scientific paper

The differences in the ratio of the intensity scintillation index S4 to the phase scintillation index sigma sub phi observed by midlatitude, auroral, and equatorial stations from a polar-orbiting satellite are also found in nonsaturated values of S4. Four factors which control the S4/sigma sub phi ratio are determined using the phase-screen theory for the production of scintillation; models are constructed describing the sheetlike and rodlike plasma-density irregularities. The models permit rejection of the effects of static diffraction by field-aligned irregularities; however, the geometrical control of the effective outer scale imposed by detrend filtering in the presence of anisotropic irregularities can explain different behaviors.

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