Abstract
Measurements of the total columnar electron content of the plasmasphere up to the plasmapause have been made using the beacon transmitters aboard the geostationary satellite ATS-III. The technique employed is a combination of the differential Doppler frequency and the Faraday rotation angle methods. Such a combination permits the determination of the integration constant necessary to convert differential Doppler data into information about the absolute value of the columnar content. A ‘layer shape factor’ defined as the ratio between the Faraday rotation angle and the columnar content is also determined. The diurnal behavior of this factor can yield information on the exchange of ionization between the ionosphere and the protonosphere. This paper describes the analysis used to obtain both the absolute value of content and the shape factor.
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