RADIO-WAVES REFLECTION AT REMOTE SENSING OF UNDERLYING COVERS
Monitoring technologies are rapidly developing at present and allow to extract and use non-coordinate information about objects. Noncoordinate information is the information about the type and properties of an object under study. Remote sensing is the main method of solving monitoring problems where...
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| Format: | Article |
| Language: | Russian |
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Moscow State Technical University of Civil Aviation
2019-06-01
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| Series: | Научный вестник МГТУ ГА |
| Subjects: | |
| Online Access: | https://avia.mstuca.ru/jour/article/view/1519 |
| _version_ | 1826563933825138688 |
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| author | L. P. Ligthart A. I. Kozlov A. I. Logvin I. V. Avtin |
| author_facet | L. P. Ligthart A. I. Kozlov A. I. Logvin I. V. Avtin |
| author_sort | L. P. Ligthart |
| collection | DOAJ |
| description | Monitoring technologies are rapidly developing at present and allow to extract and use non-coordinate information about objects. Noncoordinate information is the information about the type and properties of an object under study. Remote sensing is the main method of solving monitoring problems where special positioning belongs to the radar methods, based on space-time processing of signals and, in particular, on methods of radio polarimetry. It is necessary to have information about the surface in order to solve the monitoring task. The slightest changes in the electrical and physical properties of such areas as salinity, humidity, soil composition, etc. will lead to a change in the basic electrodynamics of the surface, notably its complex dielectric permittivity. The article demonstrates the precise solutions to the problems of radio-waves reflection from a layered surface with various laws of changes of the complex permittivity in depth. Media with exponential and quadratic laws of variation for arbitrary angles of incidence of the radio wave on the surface are considered. Precise decision is obtained for layered media with the law of change in the complex permittivity the polynomial and linear characteristics. A similar problem for the parabolic layer is considered separately. The detailed analysis of radio waves reflection from the medium with a matching layer is carried out. The nature of the electromagnetic field inside the transition layer is studied in detail. The article is illustrated by the graphs showing the dependences of an electromagnetic wave reflection coefficient on the layered medium with linear and exponential laws of variation of the complex dielectric constant over depth. |
| first_indexed | 2024-04-10T03:42:43Z |
| format | Article |
| id | doaj.art-80aac9045e7643f996a2ee372ec3984d |
| institution | Directory Open Access Journal |
| issn | 2079-0619 2542-0119 |
| language | Russian |
| last_indexed | 2025-03-14T10:11:50Z |
| publishDate | 2019-06-01 |
| publisher | Moscow State Technical University of Civil Aviation |
| record_format | Article |
| series | Научный вестник МГТУ ГА |
| spelling | doaj.art-80aac9045e7643f996a2ee372ec3984d2025-03-02T11:13:38ZrusMoscow State Technical University of Civil AviationНаучный вестник МГТУ ГА2079-06192542-01192019-06-01223576610.26467/2079-0619-2019-22-3-57-661301RADIO-WAVES REFLECTION AT REMOTE SENSING OF UNDERLYING COVERSL. P. Ligthart0A. I. Kozlov1A. I. Logvin2I. V. Avtin3Delft University of TechnologyMoscow State Technical University of Civil AviationMoscow State Technical University of Civil AviationMoscow State Technical University of Civil AviationMonitoring technologies are rapidly developing at present and allow to extract and use non-coordinate information about objects. Noncoordinate information is the information about the type and properties of an object under study. Remote sensing is the main method of solving monitoring problems where special positioning belongs to the radar methods, based on space-time processing of signals and, in particular, on methods of radio polarimetry. It is necessary to have information about the surface in order to solve the monitoring task. The slightest changes in the electrical and physical properties of such areas as salinity, humidity, soil composition, etc. will lead to a change in the basic electrodynamics of the surface, notably its complex dielectric permittivity. The article demonstrates the precise solutions to the problems of radio-waves reflection from a layered surface with various laws of changes of the complex permittivity in depth. Media with exponential and quadratic laws of variation for arbitrary angles of incidence of the radio wave on the surface are considered. Precise decision is obtained for layered media with the law of change in the complex permittivity the polynomial and linear characteristics. A similar problem for the parabolic layer is considered separately. The detailed analysis of radio waves reflection from the medium with a matching layer is carried out. The nature of the electromagnetic field inside the transition layer is studied in detail. The article is illustrated by the graphs showing the dependences of an electromagnetic wave reflection coefficient on the layered medium with linear and exponential laws of variation of the complex dielectric constant over depth.https://avia.mstuca.ru/jour/article/view/1519polarizationscattering matrixunderlying surfacecomplex dielectric permittivityscanningremote sensing |
| spellingShingle | L. P. Ligthart A. I. Kozlov A. I. Logvin I. V. Avtin RADIO-WAVES REFLECTION AT REMOTE SENSING OF UNDERLYING COVERS Научный вестник МГТУ ГА polarization scattering matrix underlying surface complex dielectric permittivity scanning remote sensing |
| title | RADIO-WAVES REFLECTION AT REMOTE SENSING OF UNDERLYING COVERS |
| title_full | RADIO-WAVES REFLECTION AT REMOTE SENSING OF UNDERLYING COVERS |
| title_fullStr | RADIO-WAVES REFLECTION AT REMOTE SENSING OF UNDERLYING COVERS |
| title_full_unstemmed | RADIO-WAVES REFLECTION AT REMOTE SENSING OF UNDERLYING COVERS |
| title_short | RADIO-WAVES REFLECTION AT REMOTE SENSING OF UNDERLYING COVERS |
| title_sort | radio waves reflection at remote sensing of underlying covers |
| topic | polarization scattering matrix underlying surface complex dielectric permittivity scanning remote sensing |
| url | https://avia.mstuca.ru/jour/article/view/1519 |
| work_keys_str_mv | AT lpligthart radiowavesreflectionatremotesensingofunderlyingcovers AT aikozlov radiowavesreflectionatremotesensingofunderlyingcovers AT ailogvin radiowavesreflectionatremotesensingofunderlyingcovers AT ivavtin radiowavesreflectionatremotesensingofunderlyingcovers |