Pub Date : 2019-06-01DOI: 10.1109/RSEMW.2019.8792716
S. Kudinov, V. Ivanov, O. Plokhikh
The article deals with the theory of the formation and reception of the response signal of the superregenerative transceiver of the upper-air radiosonde to the request signal of the radar station and ensuring their functioning in the systems of radio sounding of the atmosphere.
{"title":"Features of Application of Super-Regenerative Transceiver in Atmospheric Radiosonde System","authors":"S. Kudinov, V. Ivanov, O. Plokhikh","doi":"10.1109/RSEMW.2019.8792716","DOIUrl":"https://doi.org/10.1109/RSEMW.2019.8792716","url":null,"abstract":"The article deals with the theory of the formation and reception of the response signal of the superregenerative transceiver of the upper-air radiosonde to the request signal of the radar station and ensuring their functioning in the systems of radio sounding of the atmosphere.","PeriodicalId":158616,"journal":{"name":"2019 Radiation and Scattering of Electromagnetic Waves (RSEMW)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133477889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-01DOI: 10.1109/RSEMW.2019.8792752
A. Aharonyan, V. Avetisyan, R. Davtyan, M. Markosyan, A. Martirosyan
The multitier slot antenna on a circular waveguide with the main H11 operational mode is presented. A distance between the tiers equals to half of wavelength in the waveguide. The first tier has the transverse half-wave radiating frontal slot. The segment, which connects the frontal slot ends, is perpendicular to the waveguide diametric line along the linear polarization direction of the H11 mode. The second tier has the same slot, but it is at opposite side of the waveguide. Those tiers form the two-tier slot structure with frontal slots. The following every two tiers form another two-tier slot structure with paired slots. The first tier of that structure has the transverse half-wave radiating paired slots which centers are spaced by an angle γ over both sides of the waveguide diametric line along the polarization direction of the H11 mode. The second tier of two-tier structure has paired slots too. The centers of those slots in this tier are spaced by the same angle γ, but the paired slots are located at opposite side of the waveguide. The following two-tier slot structure differs from antecedent structure by the angle γ. The investigation results of azimuthal radiation patterns of such paired slots at different spaced angles γ as well as of the two-tier slot structures are discussed. The omnidirectional slot antenna is offered. It is a combination of the two-tier structure with frontal slots and two the two-tier structures with paired slots. An unevenness of the azimuthal radiation pattern of designed antenna does not exceed 3 dB.
{"title":"Multitier Omnidirectional Antenna on The Circular Waveguide with The Paired Slots on The Tiers","authors":"A. Aharonyan, V. Avetisyan, R. Davtyan, M. Markosyan, A. Martirosyan","doi":"10.1109/RSEMW.2019.8792752","DOIUrl":"https://doi.org/10.1109/RSEMW.2019.8792752","url":null,"abstract":"The multitier slot antenna on a circular waveguide with the main H11 operational mode is presented. A distance between the tiers equals to half of wavelength in the waveguide. The first tier has the transverse half-wave radiating frontal slot. The segment, which connects the frontal slot ends, is perpendicular to the waveguide diametric line along the linear polarization direction of the H11 mode. The second tier has the same slot, but it is at opposite side of the waveguide. Those tiers form the two-tier slot structure with frontal slots. The following every two tiers form another two-tier slot structure with paired slots. The first tier of that structure has the transverse half-wave radiating paired slots which centers are spaced by an angle γ over both sides of the waveguide diametric line along the polarization direction of the H11 mode. The second tier of two-tier structure has paired slots too. The centers of those slots in this tier are spaced by the same angle γ, but the paired slots are located at opposite side of the waveguide. The following two-tier slot structure differs from antecedent structure by the angle γ. The investigation results of azimuthal radiation patterns of such paired slots at different spaced angles γ as well as of the two-tier slot structures are discussed. The omnidirectional slot antenna is offered. It is a combination of the two-tier structure with frontal slots and two the two-tier structures with paired slots. An unevenness of the azimuthal radiation pattern of designed antenna does not exceed 3 dB.","PeriodicalId":158616,"journal":{"name":"2019 Radiation and Scattering of Electromagnetic Waves (RSEMW)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132713531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-01DOI: 10.1109/RSEMW.2019.8792773
N. P. Balabukha, D. A. Konyaev, N. Shapkina, Kseniya M. Shitikova
Near-field measurement for scanning over a truncated cylindrical surface in two-dimensional case and spherical surface in three-dimensional case is simulated for the diffraction on a perfectly conducting cylinder of finite size. Analytical and numerical solutions for two-dimensional case are in good agreement. Field expansions by cylindrical functions and by Slepian functions are analyzed and compared in three-dimensional case. Results of numerical analysis are presented.
{"title":"Mathematical Modeling of Bistatic RCS Determination by Values of the Near-Field Set on a Part of the Spherical or Cylindrical Surface","authors":"N. P. Balabukha, D. A. Konyaev, N. Shapkina, Kseniya M. Shitikova","doi":"10.1109/RSEMW.2019.8792773","DOIUrl":"https://doi.org/10.1109/RSEMW.2019.8792773","url":null,"abstract":"Near-field measurement for scanning over a truncated cylindrical surface in two-dimensional case and spherical surface in three-dimensional case is simulated for the diffraction on a perfectly conducting cylinder of finite size. Analytical and numerical solutions for two-dimensional case are in good agreement. Field expansions by cylindrical functions and by Slepian functions are analyzed and compared in three-dimensional case. Results of numerical analysis are presented.","PeriodicalId":158616,"journal":{"name":"2019 Radiation and Scattering of Electromagnetic Waves (RSEMW)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134098120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-01DOI: 10.1109/RSEMW.2019.8792766
O. Maltseva, T. Nikitenko
According to the Norilsk station data, over the years, with different levels of solar activity, testing of new ionospheric models SIMP and E-CHAIM, designed to improve the determination of the ionospheric parameters in the highlatitude zone, was compared when compared with the IRI model. It is shown that the E-CHAIM model has a large advantage not only in relation to the IRI model, but also to the SIMP model, especially for the hmF2 parameter: the relative deviations σ of the model values from experimental ones are 1.5–2.5 times smaller and for foF2(IRI) have a clear dependence on solar activity, for foF2 (SIMP), the values of σ increase, and for foF2 (E-CHAIM) decrease with increasing solar activity. Comparison of the foF2 of the model (E-CHAIM) with the experiment during the disturbed periods showed that: 1) the experimental data have large gaps, 2) there is good agreement between the model and experimental values if there are data, 3) the model values can be used in the absence of experimental data foF2, 4) the total electron content TEC can play a large role in assessing the state of the ionosphere.
{"title":"Validation of Different Ionospheric Models by Norilsk Station Data","authors":"O. Maltseva, T. Nikitenko","doi":"10.1109/RSEMW.2019.8792766","DOIUrl":"https://doi.org/10.1109/RSEMW.2019.8792766","url":null,"abstract":"According to the Norilsk station data, over the years, with different levels of solar activity, testing of new ionospheric models SIMP and E-CHAIM, designed to improve the determination of the ionospheric parameters in the highlatitude zone, was compared when compared with the IRI model. It is shown that the E-CHAIM model has a large advantage not only in relation to the IRI model, but also to the SIMP model, especially for the hmF2 parameter: the relative deviations σ of the model values from experimental ones are 1.5–2.5 times smaller and for foF2(IRI) have a clear dependence on solar activity, for foF2 (SIMP), the values of σ increase, and for foF2 (E-CHAIM) decrease with increasing solar activity. Comparison of the foF2 of the model (E-CHAIM) with the experiment during the disturbed periods showed that: 1) the experimental data have large gaps, 2) there is good agreement between the model and experimental values if there are data, 3) the model values can be used in the absence of experimental data foF2, 4) the total electron content TEC can play a large role in assessing the state of the ionosphere.","PeriodicalId":158616,"journal":{"name":"2019 Radiation and Scattering of Electromagnetic Waves (RSEMW)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116580548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-01DOI: 10.1109/RSEMW.2019.8792693
M. Dubyago, N. Poluyanovich
The work is devoted to the prediction of the residual insulation life of power cable lines, based on the electric method of measuring partial discharges. It is shown that partial discharges signals are selected among different types of interference using the partial discharges signal selection method using the wavelet transform. The issues of detection and assessment of the level of partial discharges in the insulation materials of cable systems.
{"title":"Partial Discharge Signal Selection Method for Interference Diagnostics of Insulating Materials","authors":"M. Dubyago, N. Poluyanovich","doi":"10.1109/RSEMW.2019.8792693","DOIUrl":"https://doi.org/10.1109/RSEMW.2019.8792693","url":null,"abstract":"The work is devoted to the prediction of the residual insulation life of power cable lines, based on the electric method of measuring partial discharges. It is shown that partial discharges signals are selected among different types of interference using the partial discharges signal selection method using the wavelet transform. The issues of detection and assessment of the level of partial discharges in the insulation materials of cable systems.","PeriodicalId":158616,"journal":{"name":"2019 Radiation and Scattering of Electromagnetic Waves (RSEMW)","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124800192","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-01DOI: 10.1109/RSEMW.2019.8792775
Denis Orlov, G. Kuznetsov, M. Miloserdov, V. Temchenko, A. Gigolo, A. Kovalenko
One of the important stages of creation of the digital active phased array radar is confirmation of its directional diagram characteristics. In the receiving mode output signal of the antenna is digital. The lack of analog signal doesn't allow us to use standard setups of measurements. The possible measurement setups and their features are considered in this article.
{"title":"Main Features of Digital Phased Array Antenna Measurement in the Receiving Mode","authors":"Denis Orlov, G. Kuznetsov, M. Miloserdov, V. Temchenko, A. Gigolo, A. Kovalenko","doi":"10.1109/RSEMW.2019.8792775","DOIUrl":"https://doi.org/10.1109/RSEMW.2019.8792775","url":null,"abstract":"One of the important stages of creation of the digital active phased array radar is confirmation of its directional diagram characteristics. In the receiving mode output signal of the antenna is digital. The lack of analog signal doesn't allow us to use standard setups of measurements. The possible measurement setups and their features are considered in this article.","PeriodicalId":158616,"journal":{"name":"2019 Radiation and Scattering of Electromagnetic Waves (RSEMW)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129656691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-01DOI: 10.1109/RSEMW.2019.8792778
N. Anyutin, I. Malay, Alexey Malyshev
In the article performance of different integral equation formulations for electromagnetic field source reconstruction is examined. Equivalence of equivalent source theorem and Stratton and Chu formulas from physical and computational mathematics points of view is discussed. It is shown that equivalent electromagnetic field source reconstruction through Stratton and Chu formulas provides more stable solution and reduces the errors up to 2 dB.
{"title":"Advantage of Stratton and Chu Formulas for Electromagnetic Field Reconstruction","authors":"N. Anyutin, I. Malay, Alexey Malyshev","doi":"10.1109/RSEMW.2019.8792778","DOIUrl":"https://doi.org/10.1109/RSEMW.2019.8792778","url":null,"abstract":"In the article performance of different integral equation formulations for electromagnetic field source reconstruction is examined. Equivalence of equivalent source theorem and Stratton and Chu formulas from physical and computational mathematics points of view is discussed. It is shown that equivalent electromagnetic field source reconstruction through Stratton and Chu formulas provides more stable solution and reduces the errors up to 2 dB.","PeriodicalId":158616,"journal":{"name":"2019 Radiation and Scattering of Electromagnetic Waves (RSEMW)","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126327648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-01DOI: 10.1109/RSEMW.2019.8792735
I. Malyshev, O. Goncharova
The paper presents the calculations and research results of the complex conductivity components of AIIIBV type semiconductors structures determined using a phenomenological approach, which is based on the ratio for the inverse effective mass of charge carriers, obtained by decomposing into a Taylor series and limiting this series to two members, which greatly simplifies the final calculation algorithm. The relation for the complex low-signal microwave conductivity is obtained and its frequency characteristics are investigated. The case of the cumulative influence of electric and magnetic fields on the semiconductor is investigated, as a result it "splitting" of the maximum in the diffusion induction characteristic is revealed for large values of the magnetic field induction.
{"title":"The Possibility of Creating a New Class of Frequency Converting Devices Based on The Bulk of AIIIBV Type Semiconductor Structures with Parameters Controlled by Strong Electric and Magnetic Fields","authors":"I. Malyshev, O. Goncharova","doi":"10.1109/RSEMW.2019.8792735","DOIUrl":"https://doi.org/10.1109/RSEMW.2019.8792735","url":null,"abstract":"The paper presents the calculations and research results of the complex conductivity components of AIIIBV type semiconductors structures determined using a phenomenological approach, which is based on the ratio for the inverse effective mass of charge carriers, obtained by decomposing into a Taylor series and limiting this series to two members, which greatly simplifies the final calculation algorithm. The relation for the complex low-signal microwave conductivity is obtained and its frequency characteristics are investigated. The case of the cumulative influence of electric and magnetic fields on the semiconductor is investigated, as a result it \"splitting\" of the maximum in the diffusion induction characteristic is revealed for large values of the magnetic field induction.","PeriodicalId":158616,"journal":{"name":"2019 Radiation and Scattering of Electromagnetic Waves (RSEMW)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120908747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-01DOI: 10.1109/RSEMW.2019.8792738
A. A. Volkova, E. S. Malevich, M. S. Mikhailov
This article provides an overview of the existing mathematical models of the forest. A review of methods for calculating of radio wave propagation in different forest models is given. A forest constructor has been developed, based on the determination of the refractive index in the medium, then using which the electromagnetic field is calculated using the parabolic equation method. Verification of the obtained field attenuation in the resulting constructor with the case of propagation of an electromagnetic field in the condition of a layered model was carried out.
{"title":"Numerical Simulation of Radio Wave Propagation in a Forest Environment Using the Constructor of Individual Trees","authors":"A. A. Volkova, E. S. Malevich, M. S. Mikhailov","doi":"10.1109/RSEMW.2019.8792738","DOIUrl":"https://doi.org/10.1109/RSEMW.2019.8792738","url":null,"abstract":"This article provides an overview of the existing mathematical models of the forest. A review of methods for calculating of radio wave propagation in different forest models is given. A forest constructor has been developed, based on the determination of the refractive index in the medium, then using which the electromagnetic field is calculated using the parabolic equation method. Verification of the obtained field attenuation in the resulting constructor with the case of propagation of an electromagnetic field in the condition of a layered model was carried out.","PeriodicalId":158616,"journal":{"name":"2019 Radiation and Scattering of Electromagnetic Waves (RSEMW)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124017683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-01DOI: 10.1109/RSEMW.2019.8792685
V. Fedosov, R. R. Ibadov, S. R. Ibadov, V. Voronin
This article discusses the possibility of building a radar map in the mode of Doppler beam sharpening. Spatial autocorrelation is considered as an image preprocessing for subsequent analysis when restoring a part of the map in the direction course carrier of the radar. Present is method for restoring the blind zone of images of the underlying surface map based on the search for similar blocks and their combination using a neural network. The efficiency of this approach is shown on several examples for different areas with lost pixels.
{"title":"Restoration of the Blind Zone of the Image of the Underlying Surface for Radar Systems with Doppler Beam Sharpening","authors":"V. Fedosov, R. R. Ibadov, S. R. Ibadov, V. Voronin","doi":"10.1109/RSEMW.2019.8792685","DOIUrl":"https://doi.org/10.1109/RSEMW.2019.8792685","url":null,"abstract":"This article discusses the possibility of building a radar map in the mode of Doppler beam sharpening. Spatial autocorrelation is considered as an image preprocessing for subsequent analysis when restoring a part of the map in the direction course carrier of the radar. Present is method for restoring the blind zone of images of the underlying surface map based on the search for similar blocks and their combination using a neural network. The efficiency of this approach is shown on several examples for different areas with lost pixels.","PeriodicalId":158616,"journal":{"name":"2019 Radiation and Scattering of Electromagnetic Waves (RSEMW)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115420291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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