Zhurnal Radioelektroniki - Journal of Radio Electronics. eISSN 1684-1719. 2021. №11
ContentsFull text in Russian (pdf)
DOI: https://doi.org/10.30898/1684-1719.2021.11.8
UDC: 537.87, 517.9, 550.37
PROPAGATION OF VIDEO PULSE SIGNALS IN DISSIPATIVE MEDIA
O. A. Gulevich 1, L. B. Volkomirskaya 1, I. V. Mingalev 2, Z. V. Suvorova 2, O. I. Akhmetov 2, O. V. Mingalev 2, A. E. Reznikov 1
1 Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation, Russian Academy of Sciences (IZMIRAN), Kaluzhskoe shosse, 4, Troitsk, Moscow, 108840, Russia
2 Polar Geophysical Institute, st. Akademgorodok 26а, Apatity, Murmansk Oblast, 184209, Russia
The paper was received July 1, 2021.
Abstract. The results of the numerical solution of the problem of propagation of an electromagnetic video pulse signal of nanosecond duration in a dissipative medium are presented for use in the deep georadar data interpretation. Based on the developed scheme for integrating Maxwell's equations, the results of numerical modeling of the propagation of electromagnetic pulses of various shapes without approximations, usually used in the traditional solution of GPR problems, including the separation of temporal and spatial variables of the electromagnetic field and neglect of the rapid field change in comparison with the processes occurring in the medium, are obtained. The influence of the pulse shape on the shape of the electromagnetic echo signal is considered for various models of the medium close to real conditions, including those with a gradient change in electrical conductivity and permittivity. The influence of the distribution of electrical conductivity of the medium is studied.
Key words: numerical integration, GPR, conductivity gradient, video pulse.
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For citation:
Gulevich O.A., Volkomirskaya L.B., Mingalev I.V., Suvorova Z.V., Akhmetov O.I., Mingalev O.V., Reznikov A.E. Propagation of video pulse signals in dissipative media. Zhurnal radioelektroniki [Journal of Radio Electronics] [online]. 2021. №11. https://doi.org/10.30898/1684-1719.2021.11.8 (In Russian)