Morphological aspects of ionospheric scintillations from a multi-satellite radio transmission system

Details Morphological aspects of ionospheric scintillations from a multi-satellite radio transmission system Morphological aspects of ionospheric scintillations from a multi-satellite radio transmission system

Sep 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975jatp...37.1255h&link_type=abstract

Journal of Atmospheric and Terrestrial Physics, vol. 37, Sept. 1975, p. 1255-1261. Research supported by the Australian Researc

Physics

2

Ionospheric Propagation, Navigation Satellites, Satellite Transmission, Scintillation, Amplitudes, Diurnal Variations, Drift Rate, Midlatitude Atmosphere, Morphology, Night Sky, Satellite Networks, Time Response

Scientific paper

Radio transmissions at a frequency of 150 MHz from five U.S. Navy Navigational Satellites were used to detect amplitude scintillations in sourthern mid-latitudes. The frequent radio scans of the ionosphere made it possible to follow the development of scintillation regions at night-time. At first, scintillations tended to occur polewards of the station in the evening. This was followed by the equatorwards drift of scintillations with a typical velocity lying between 70-130 m/sec. Later at night the majority of scintillations occurred equatorwards of the station. The time of the evening occurrence of scintillations coincided with the sunset curve at the auroral F-region. The equatorwards drift of scintillations is in agreement with the earlier finding on the equatorwards expansion of the polar scintillation ovals. It is suggested that the polar scintillation oval is a source of scintillation activity in mid-latitudes.

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