The Transient Electromagnetic Field above Atmospheric Surface Duct

Adel A.S.Abo Seliem, Fathia A.M. Alseroury


The transient electromagnetic field generated by vertical electric dipole in evaluation duct is investigated theoretically. A vertical electric dipole in the surface layer is taken as the source of the electromagnetic field. We determine the electric field strength exactly at some fixed point in the duct layer expansion with time, the image of the primary source permits us to apply the method first for Cagnaird and later extended by De Hoop and Frankena to the cases .Hence, we can give a physically intuitive description of polarization dependence at the time of the electrical field strength. The distinction of different cases where the distances between the receiving and transmitting ends at greater or lesser than the total reflection distance is studied.

Keywords: Electromagnetic field, Magnetic dipole

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ISSN (Paper)2224-3186 ISSN (Online)2225-0921

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