The effect of induction emf on the parameters of an ion screen around a low-frequency cylindrical antenna in the ionosphere

Details The effect of induction emf on the parameters of an ion screen around a low-frequency cylindrical antenna in the ionosphere The effect of induction emf on the parameters of an ion screen around a low-frequency cylindrical antenna in the ionosphere

May 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981kosis..19..392a&link_type=abstract

Kosmicheskie Issledovaniia, vol. 19, May-June 1981, p. 392-400. In Russian.

Statistics

Computation

Cylindrical Antennas, Electromotive Forces, Geomagnetism, Ionospheric Ion Density, Satellite Antennas, Spacecraft Motion, Center Of Mass, Induction, Low Frequencies, Screens, Space Plasmas

Scientific paper

Induction emf can arise in a low-frequency cylindrical satellite antenna in the ionosphere as a result of the motion of the satellite in the geomagnetic field. This paper presents a theoretical study of the effect of this induction emf on the parameters of the ion screen formed around the antenna. Simple analytical expressions are obtained for the capacitance and active admittance of the ion screen, with allowance for the induction emf. Computational results agree well with experimental data obtained on Copernicus 500 by means of a low-frequency impedance probe. The value of induction emf was determined by an analysis of the triaxial orientation of the satellite. It is shown that the experimentally observed modulation of antenna parameters during the motion of the satellite about its center of mass can be explained by the effect of induction emf.

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