Rotation-angle variations of the polarization plane of a 136-MHz signal in the 10-60-min period range according to observations with the Sirio geostationary satellite

Details Rotation-angle variations of the polarization plane of a 136-MHz signal in the 10-60-min period range according to observations with the Sirio geostationary satellite Rotation-angle variations of the polarization plane of a 136-MHz signal in the 10-60-min period range according to observations with the Sirio geostationary satellite

Jun 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988ge%26ae..28..504v&link_type=abstract

Geomagnetizm i Aeronomiia (ISSN 0016-7940), vol. 28, May-June 1988, p. 504-506. In Russian.

Computer Science

Sound

Ionospheric Electron Density, Polarization (Waves), Satellite Sounding, Traveling Ionospheric Disturbances, Periodic Variations, Signal Reflection, Sirio Satellite, Tropospheric Waves

Scientific paper

Quasi-periodic variations of the rotation angle of the polarization plane (Phi) of 136-MHz signals from the Sirio satellite were analyzed on the basis of measurements performed at the Alma-Ata station. It is shown that variations of Phi with a period of less than 30 min are probably due to interference between direct and ground-reflected signals, arising during the evolution of the satellite orbit. A noon maximum is found to predominate in the occurrence of Phi variations with periods exceeding 40 min; these variations are shown to be connected with ionospheric wave disturbances due to the penetration of acoustic-gravity waves, generated in the troposphere, into the ionosphere.

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