Experimental results on satellite scintillations due to field-aligned irregularities at mid-latitudes

Details Experimental results on satellite scintillations due to field-aligned irregularities at mid-latitudes Experimental results on satellite scintillations due to field-aligned irregularities at mid-latitudes

Sep 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jatp...45..563s&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 45, Aug.-Sept. 1983, p. 563-567.

Physics

5

Ionospheric Propagation, Midlatitude Atmosphere, Radio Transmission, Scintillation, Very High Frequencies, Diurnal Variations, Faraday Effect, Japanese Spacecraft, Radio Scattering, Synchronous Satellites, Temperate Regions

Scientific paper

Experiments using multi-station networks receiving signals from the VHF beacon of a geostationary satellite have been carried out in order to clarify the geometrical factor involved in ionospheric intensity scintillations due to field-aligned irregularities. The characteristics of scintillation observed in the daytime agree with the theoretical value expected for weak diffractive scattering by ionospheric irregularities with an elongation of 10 along the geomagnetic field. However, those in the night-time show much marked enhancement along the field-line due to strong refractive scattering by irregularities having the same elongation. Finally, it is shown that the geometrical factor in scintillation at mid-latitudes can be expressed as a function of the propagation angle between the radio path and the geomagnetic field in the ionosphere. The maximum values of the geometrical factor are respectively about 5 in the daytime and 14 at night.

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