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Общее количество найденных документов : 20
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1.


   
    Diurnal Dynamics Radiobrightness Temperature of Soil on the Frequency 1.4 and 6.9 GHz in the Processes of Freezing/Thawing [Text] / Bobrov P.P., Mironov V.L., Yashchenko A.S. // Proceedings IGARSS. - 2010. - P4477-4479


Доп.точки доступа:
Bobrov, P.P.; Mironov, V.L.; Yashchenko, A.S.
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2.


   
    Spectroscopic microwave dielectric model of moist soils / V. L. Mironov, P. P. Bobrov // Advances in Geoscience and Remote Sensing : In-Tech, 2009. - Chapt. 13, DOI 10.5772/8318 . - ISBN 978-953-307-005-6

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Доп.точки доступа:
Mironov, V.L.; Bobrov, P.P.
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3.


   
    Results of the SMOS Data Validation over a Steppe and Forest Area in Siberia [Text] / P. P. Bobrov, O. V. Kondratieva, V. L. Mironov [et al.] // Proc. PIER. - 2011. - P55-58


Доп.точки доступа:
Bobrov, P.P.; Kondratieva, O.V.; Mironov, V.L.; Shvetsov, E.; Sukhinin, A.I.; Yashchenko, A.S.; Progress In Electromagnetics Research Symposium(2011 ; Sept. 12-16 ; Suzhou, China)
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4.


   
    The Effect of Clay and Organic Mat ter Content on the Dielectric Permittivity of Soils and Grounds at the Frequency Range From 10 Mhz to 1 Ghz [Text] / Bobrov P.P.Mironov V.L. [et al.] // Proceedings IGARSS. - 2010. - P4433-4435


Доп.точки доступа:
Bobrov, P.P.; Mironov, V.L.; Kondratyeva, O.V.; Repin, A.V.
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5.


   
    Frequency Dependence of Permittivity of Free and Bound Water in Soils for Different Textures [Text] / P. P. Bobrov, V. L. Mironov [et al.] // Progress in Electromagnetics Research Symposium Proceedings (PIERS 2009). - 2009. - P. 752-756

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Доп.точки доступа:
Bobrov, P.P.; Mironov, V. L.; Kondratieva, O.V.; Repin, A.V.; Progress In Electromagnetics Research Symposium(26 ; 2009 ; Aug. ; 18-21 ; Moscow)
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6.


   
    Effect of Antireflective Surface at the Radiobrightness Observations for the Topsoil Covered with Coniferous Litter [Text] / V. L. Mironov, P. P. Bobrov [et al.] // PIERS Online. - 2009. - Vol. 5, No 8. - P. 751-755

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Доп.точки доступа:
Mironov, V. L.; Bobrov, P.P.; Yashchenko, A.S.; Savin, I.V; Repin, A.V.
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7.


    Bobrov, P. P.
    The effect of dielectric relaxation processes on the complex dielectric permittivity of soils at frequencies from 10 kHz to 8 GHz—Part II: Broadband analysis / P. P. Bobrov, E. S. Kroshka, K. V. Muzalevskiy // IEEE Trans. Geosci. Remote Sens. - 2024. - Vol. 62. - Ст. 2000411, DOI 10.1109/TGRS.2023.3340693. - Cited References: 51 . - ISSN 0196-2892. - ISSN 1558-0644
   Перевод заглавия: Эффект процессов диэлектрической релаксации на комплексную диэлектрическую проницаемость почв на частотах от 10 кГц до 8 ГГц
Кл.слова (ненормированные):
dielectric measurement -- Dobson dielectric model -- Maxwell–Wagner effect -- refraction-relaxation model -- soil moisture
Аннотация: This article is the second in a series evaluating the effect of dielectric relaxation processes on the relatively effective complex dielectric permittivity (RCP) of soils. Part II is based on the results of experimental measurements in the frequency range 10 kHz to 8–20 GHz. The broadband dielectric spectrum model includes the high-frequency part as a model of the dielectric mixture and the relaxation part as the sum of three relaxation processes modeled by the Debye and Cole–Cole formulas. For modeling the high-frequency part of the spectrum, the Dobson and Mironov models were considered as possible options. As stated in Part I, the influence of relaxation processes on the imaginary part of the RCP extends up to frequencies of units of gigahertz. The increase in the imaginary part in these models was compensated by unrealistically high values of the specific electrical conductivity of free and bound water. We examined the correspondence of these models to experimental data at frequencies above 2–5 GHz, assuming that the conductivity of bound and free water is zero. The parameters of relaxation processes were found while solving the least-square optimization problem using the technique for determining the continuous distribution of relaxation times (DRTs). Found process parameters depend on the content of clay, organic carbon, and moisture of the samples. The more clay is in the soil, the greater the strength of these processes is. The influence of organic carbon with the conditions being equal consists in the reduction of the real and imaginary parts of RCP.

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Держатели документа:
Faculty of Physics, Omsk State Pedagogical University, 644043 Omsk, Russia
Omsk Scientific Center SB RAS (Institute of Radiophysics and Physical Electronics), 644099 Omsk, Russia
Kirensky Institute of Physics Federal Research Center KSC Siberian Branch Russian Academy of Sciences, 660036 Krasnoyarsk, Russia

Доп.точки доступа:
Kroshka, E. S.; Muzalevskiy, K. V.; Музалевский, Константин Викторович
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8.


   
    Radiometric Measurements of Maximum Bound Wa?ter Fraction in Soil [Text] / V. L. Mironov, P. P. Bobrov, A. S. Yashchenko // Progress in Electromagnetics Research Symposium Proceedings (PIERS 209). - 2009. - P. 839-843

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Доп.точки доступа:
Mironov, V. L.; Bobrov, P.P.; Yashchenko, A.S.; Progress In Electromagnetics Research Symposium(2009 ; Mar. ; 23-27 ; Beijing, China)
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9.


   
    Effect of Antireflective Surface at the Radiobrightness Observations for the Topsoil Covered with Coniferous Litter [Text] / V. L. Mironov, P. P. Bobrov [et al.] // Progress in Electromagnetics Research Symposium Proceedings (PIERS 2009). - 2009. - P. 966-970

Материалы конференции

Доп.точки доступа:
Mironov, V. L.; Bobrov, P.P.; Yashchenko, A.S.; Savin, I.V.; Repin, A.V.; Progress In Electromagnetics Research Symposium(26 ; 2009 ; Aug. ; 18-21 ; Moscow)
}
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10.


   
    Microwave Dielectric Spectroscopy of Moist Soils for a Forest-tundra Region / V. L. Mironov, P. P. Bobrov, A. P. Bobrov [et al.] // IEEE International Geoscience and Remote Sensing Symposium (IGRASS) : Proceedings. - Seoul, 2005. - Vol. 6. - Ст. 1525917. - P. 4485-4488, DOI 10.1109/igarss.2005.1525917. - Библиогр.: 8 . - ISBN 978-078039050-8
Аннотация: In this paper, the measured microwave dielectric data are presented for some soils collected in the forest-tundra area located at 64° N and 100° E, which is near the city of Tura in East Siberia. The measurements were developed in the range from 0.3 to 12.5 GHz at the temperature of 24°C. The Debye spectroscopic parameters related to the bound soil water (BSW) and free soil water (FSW) were derived with the use of the generalized refractive mixing dielectric model (GRMDM) [1], [2]. The foresttundra soils analyzed were found to contain the smaller percentage of bound water, with its complex dielectric constant (CDC) being less than that of the soils in the agricultural zones of Siberia [3]-[5], in spite of the fact that the forest-tundra soils demonstrated smaller clay and humus percentage as compared to the agricultural soils. The results obtained can be considered as a substantial contribution to the soil dielectric data base for the northern circumpolar region, which is a compulsory element of physically based both the remote sensing models and retrieving algorithms.

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Доп.точки доступа:
Mironov, V. L.; Миронов, Валерий Леонидович; Bobrov, P. P.; Bobrov, A. P.; Mandrygina, V. N.; Stasuk, V. D.; IEEE International Geoscience and Remote Sensing Symposium(25 ; 2005 ; July ; 25-29 ; Seoul, South Korea)
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