Physics of Wave Processes and Radio SystemsPhysics of Wave Processes and Radio Systems1810-31892782-294XPovolzhskiy State University of Telecommunications and Informatics1041910.18469/1810-3189.2022.25.2.22-27Research ArticleThe calculation of reflections of linear polarization plane electromagnetic wave from the boundary of the «air – wet soil» based on heterogeneous Maxwell Garnett and Brughehman modelsPaninDmitry N.<p>Candidate of Physical and Mathematical Sciences, associate professor, head of the Department of Theoretical Foundations of Radio Engineering and Communications, Povolzhskiy State University of Telecommunications and Informatics, Samara, Russia. In 1999 he graduated from the Faculty of Physics of the Samara State University. In 2003 he defended his PhD thesis on the topic: «Numerical analysis of reflections in layered media and synthesis of smooth matching transitions in transmission lines». In 2007 he was awarded the academic title of Associate Professor. In 2016, he was awarded the Honorary Radio Operator badge. Author of more than 50 publications and scientific papers in the field of the theory of wave processes in media with spatial and temporal dispersion.</p>
<p><em>Research interests</em>: theory of wave processes and computer simulation in radiophysics.</p>panin-dn@psuti.ruOsipovOleg V.<p>Doctor of Physical and Mathematical Sciences, associate professor, vice-rector for Digital Development, Povolzhskiy State University of Telecommunications and Informatics, Samara, Russia. In 2000 he defended his PhD thesis on the topic «Study of reflective and waveguide structures with chiral layers». In 2006, he received a letter of thanks from the Administration of the Samara City District for a significant contribution to higher education in the Samara region. In 2006, Osipov O.V. successfully defended his dissertation for the degree of Doctor of Physical and Mathematical Sciences in the specialty 01.04.03 – Radiophysics on the topic «Electrodynamics of reflecting and waveguide structures with chiral layers». In 2008, Osipov O.V. was awarded a grant in the field of natural and human sciences in the nomination «Doctor of Science of the Russian Academy of Sciences» from the Russian Academy of Sciences. In 2011, he was awarded the Honorary Radio Operator badge. Osipov O.V. is a well-known specialist in the field of radiophysics and electrodynamics, namely in the theory of chiral media and microwave metastructures. Author and co-author of 7 monographs, 3 textbooks and 8 manuals certified by the Ministry of Education and Science of the Russian Federation and UMO, the list of scientific and methodological works includes more than 300 publications.</p>
<p><em>Research interests</em>: electrodynamics of metamaterials, antennas and microwave devices, nonlinear optics.</p>o.osipov@psuti.ruBezlyudnikovKirill O.<p>2nd year student of the Povolzhskiy State University of Telecommunications and Informatics, Samara, Russia. In 2020, he graduated from the Samara Lyceum of Information Technologies. Participant and winner of Olympiads in physics and telecommunication technologies. Author of 2 scientific papers.</p>
<p><em>Research interests</em>: electromagnetic fields and waves, methods and means of mathematical modeling of electrodynamic systems, antennas and microwave devices, theory of noise immunity of transmission of discrete and continuous messages.</p>yakobix@ya.ruPovolzhskiy State University of Telecommunications and Informatics25062022252222725062022Copyright © 2022, Panin D.N., Osipov O.V., Bezlyudnikov K.O.2022<p>In this work we calculated the reflection coefficients modules of a linear polarization plane electromagnetic wave depending on soil moisture with a relative complex dielectric constant described by the heterogeneous Maxwell Garnett and Bruggeman models. A comparison is made of the calculated dependences of reflection coefficients for incident E- and H-polarization waves on soil moisture according to the two proposed heterogeneous two-component models. The correctness of the applied models is shown within the soil moisture content up to 10 %. Within the limits of soil moisture change from 10 to 50 %, there are slight discrepancies in the calculation results for two heterogeneous models. The reflection level of an electromagnetic wave from the soil surface in the case of its H-polarization is less than in the case of E-polarization. With an increase in soil moisture, a monotonous increase in the reflection level is observed. The proposed heterogeneous models of wet soil and the calculation method can be used for remote radar sensing of the Earths surface in order to determine the moisture content in the rooted layer of the soil.</p>метаматериалэлектромагнитная волнавлажность почвыкоэффициент отражениягетерогенная модельдистанционное зондирование Землиmetamaterialelectromagnetic wavesoil moisturereflection coefficientheterogeneous modelEarth remote sensing[Martínez-Fernández J., González-Zamora A., Almendra-Martín L. Soil moisture memory and soil properties: An analysis with the stored precipitation fraction. 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Vzaimodejstvie sverhvysokochastotnogo, teragertsovogo i opticheskogo izluchenija s poluprovodnikovymi mikro- i nanostrukturami, metamaterialami i bioob’ektami: sb. statej vos’moj Vserossijskoj nauchnoj shkoly-seminara, 2021, pp. 237–241. (In Russ.)][Matveev I.V., Osipov O.V., Panin D.N. Interaction of an electromagnetic wave with a chiral metamaterial based on the Maxwell Garnett model. IV Nauchnyj forum telekommunikatsii: teorija i tehnologii (TTT-2020). Fizika i tehnicheskie prilozhenija volnovyh protsessov (FiTPVP-2020), 2020, pp. 220–221. (In Russ.)][Recommendation ITU-R P.527-4 dated 06/2017. Electrical characteristics of the earth’s surface. Series R. Propagation of radio waves.]