Abstract
We present the results of experiments on studying of characteristics of the ULF/ELF signals generated by the Kola ground facility. Signals were detected at different distances from the source. The amplitude and polarization parameters of the signal are plotted as functions of the distance and direction to the source, which allows us to determine the efficiency of using this facility for receiving signals at points with different geographic coordinates and for different levels of background low-frequency noise. It is found that the signal characteristics are sensitive to variations in the parameters of the ionospheric layers and comprise information on the inhomogeneous structure of the Earth's crust under the source.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 48, No. 9, pp. 788–799, September 2005.
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Ermakova, E.N., Kotik, D.S., Sobchakov, L.A. et al. Experimental Studies of Propagation of Artificial Electromagnetic Signals in the Range 0.6–4.2 Hz. Radiophys Quantum Electron 48, 700–710 (2005). https://doi.org/10.1007/s11141-005-0114-6
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DOI: https://doi.org/10.1007/s11141-005-0114-6