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2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science最新文献

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Shielding Effectiveness Measurement in a Multiple Monopole Source Stirred Reverberation Chamber 多单极源搅拌混响室屏蔽效能测量
2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science Pub Date : 2020-08-01 DOI: 10.23919/URSIGASS49373.2020.9232246
A. De Leo, G. Cerri, P. Russo, V. Mariani Primiani
{"title":"Shielding Effectiveness Measurement in a Multiple Monopole Source Stirred Reverberation Chamber","authors":"A. De Leo, G. Cerri, P. Russo, V. Mariani Primiani","doi":"10.23919/URSIGASS49373.2020.9232246","DOIUrl":"https://doi.org/10.23919/URSIGASS49373.2020.9232246","url":null,"abstract":"This paper reports the measurement of the shielding effectiveness of a metallic enclosure. The experimental environment is a reverberation chamber where the multiple monopole source stirring technique is implemented. The results are compared to the measurements in the same environment, by using a traditional mechanical stirring technique and to the anechoic scenario using numerical simulations.","PeriodicalId":438881,"journal":{"name":"2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130126240","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}
引用次数: 0
Studying the temporal variations of atmosphere physical properties at different spatial and temporal scales by VLF radio signals and space geodesy techniques 利用VLF无线电信号和空间大地测量技术研究不同时空尺度下大气物理性质的时间变化
2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science Pub Date : 2020-08-01 DOI: 10.23919/URSIGASS49373.2020.9232381
G. Nico, A. Nina, P. Biagi, R. Colella, A. Ermini
{"title":"Studying the temporal variations of atmosphere physical properties at different spatial and temporal scales by VLF radio signals and space geodesy techniques","authors":"G. Nico, A. Nina, P. Biagi, R. Colella, A. Ermini","doi":"10.23919/URSIGASS49373.2020.9232381","DOIUrl":"https://doi.org/10.23919/URSIGASS49373.2020.9232381","url":null,"abstract":"In this work we study the physical variations of atmosphere at different spatial and temporal scales. The temporal evolution of the amplitude of Very Low Frequency (VLF) radio signals is used as a means to characterize the seasonal variations of atmosphere. The microwave-based GNSS and Synthetic Aperture radar (SAR) interferometry techniques are used as a means to characterize anomalies in the physical properties of atmosphere due to solar X-ray flares.","PeriodicalId":438881,"journal":{"name":"2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129049102","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}
引用次数: 0
A Novel Approach to Rainfall Rate Estimation based on Fusing Measurements from Terrestrial Microwave and Satellite Links 基于地面微波和卫星链路融合测量的降雨率估算新方法
2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science Pub Date : 2020-08-01 DOI: 10.23919/URSIGASS49373.2020.9232257
Fabio Saggese, F. Giannetti, V. Lottici
{"title":"A Novel Approach to Rainfall Rate Estimation based on Fusing Measurements from Terrestrial Microwave and Satellite Links","authors":"Fabio Saggese, F. Giannetti, V. Lottici","doi":"10.23919/URSIGASS49373.2020.9232257","DOIUrl":"https://doi.org/10.23919/URSIGASS49373.2020.9232257","url":null,"abstract":"Reliable, cheap and accurate measurements of rainfall rate are growing to be more and more important in many sectors as: meteorology, agriculture, flood warning, and weather forecasting. Recently, indeed, the development of novel competitive techniques has been pushed in order to improve accuracy and reliability performance, such as commercial microwave links and broadcast satellite links. The aim of the current paper is to extend previous works of the literature based on land wireless links only. The basic idea consists in synergically employing both land and satellite based approaches together, by collecting and properly fusing the corresponding measurements. To this end, an iterative optimization procedure has been developed. As shown by numerical results, the proposed procedure gives the estimated rainfall map with a considerable accuracy and improved performance respect to the conventional algorithm based on terrestrial link only.","PeriodicalId":438881,"journal":{"name":"2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130556868","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}
引用次数: 2
Optimized Virtual Antenna Array of Wideband Narrow Beam MIMO System for Overlapped Virtual Elements 面向重叠虚拟元的宽带窄波束MIMO系统虚拟天线阵优化
2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science Pub Date : 2020-08-01 DOI: 10.23919/URSIGASS49373.2020.9232368
Richard Tanski, J. Lee
{"title":"Optimized Virtual Antenna Array of Wideband Narrow Beam MIMO System for Overlapped Virtual Elements","authors":"Richard Tanski, J. Lee","doi":"10.23919/URSIGASS49373.2020.9232368","DOIUrl":"https://doi.org/10.23919/URSIGASS49373.2020.9232368","url":null,"abstract":"This paper presents a novel process of creating an optimized virtual array for a Multi-Input, Multi-Output (MIMO) antenna array. It has been shown that MIMO radars yield increased range and angular resolution as compared to non-MIMO phased array radars. This is due, in part, to the increased aperture size created from the MIMO virtual array. It is known that for certain linear phased array antenna geometries/layouts that antenna elements can become overrepresented in the resultant MIMO virtual array. Current literature pertaining to the generation of an optimized MIMO antenna virtual array has not been presented for overrepresented antenna configurations. This paper presents the general concept of MIMO radar, overrepresented MIMO array configurations and the processing problems that result. The proposed solution for this result is discussed.","PeriodicalId":438881,"journal":{"name":"2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132996135","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}
引用次数: 4
Asymmetric Single Split Resonator for RFID Applications 用于RFID应用的非对称单分裂谐振器
2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science Pub Date : 2020-08-01 DOI: 10.23919/URSIGASS49373.2020.9232258
Anila P. Viswanathan, M. Manoj, M. Remsha, V. A. Shameena, P. Mohanan
{"title":"Asymmetric Single Split Resonator for RFID Applications","authors":"Anila P. Viswanathan, M. Manoj, M. Remsha, V. A. Shameena, P. Mohanan","doi":"10.23919/URSIGASS49373.2020.9232258","DOIUrl":"https://doi.org/10.23919/URSIGASS49373.2020.9232258","url":null,"abstract":"This paper presents a new Asymmetric Single Split Resonator (ASSR) structure for single negative and/or double negative metamaterial applications and its characteristics. The uniplanar structure is a modified split ring resonator with a single split and the prototype is analyzed based on reflection coefficient and unit cell simulations. It exhibits high field confinement as compared to SRR, so best suited for filter and RFID applications. The paper presents the constitutive parameters of ASSR for parallel polarization with supporting simulation and measurement results.","PeriodicalId":438881,"journal":{"name":"2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129255516","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}
引用次数: 0
A High-Frequency Solution for the Plane Wave Diffraction from a 90° Metallic Wedge with a Metamaterial Layer on the Top Surface 上表面有超材料层的90°金属楔的平面波衍射的高频解
2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science Pub Date : 2020-08-01 DOI: 10.23919/URSIGASS49373.2020.9232351
G. Gennarelli, G. Riccio
{"title":"A High-Frequency Solution for the Plane Wave Diffraction from a 90° Metallic Wedge with a Metamaterial Layer on the Top Surface","authors":"G. Gennarelli, G. Riccio","doi":"10.23919/URSIGASS49373.2020.9232351","DOIUrl":"https://doi.org/10.23919/URSIGASS49373.2020.9232351","url":null,"abstract":"A uniform asymptotic solution is presented for evaluating the diffraction from a right-angled metallic wedge partially covered by a double negative metamaterial layer. A plane wave is assumed to impact the structure at skew incidence with respect to the edge. The problem is solved by means of an approach that is based on the physical optics approximation of surface currents radiating in the surrounding free space. The analytical procedure provides in a closed form expression of the diffraction matrix in the framework of the uniform geometrical theory of diffraction. The related diffracted field is able to counterbalance the discontinuities of the geometrical optics field, thus producing a continuous total field also in correspondence of the shadow boundaries.","PeriodicalId":438881,"journal":{"name":"2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science","volume":"07 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128763780","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}
引用次数: 0
Metamaterial-Inspired Quad-Band Notch Filter for LTE Band Receivers and WPT Applications 用于LTE波段接收器和WPT应用的超材料启发四频带陷波滤波器
2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science Pub Date : 2020-08-01 DOI: 10.23919/URSIGASS49373.2020.9232331
R. Keshavarz, Y. Miyanaga, M. Yamamoto, T. Hikage, N. Shariati
{"title":"Metamaterial-Inspired Quad-Band Notch Filter for LTE Band Receivers and WPT Applications","authors":"R. Keshavarz, Y. Miyanaga, M. Yamamoto, T. Hikage, N. Shariati","doi":"10.23919/URSIGASS49373.2020.9232331","DOIUrl":"https://doi.org/10.23919/URSIGASS49373.2020.9232331","url":null,"abstract":"A new compact quad-band notch filter (QBNF) based on the extended composite right and left-handed transmission line (E-CRLH TL) has been presented. As known, E-CRLH TL behaves like a quad-band structure. A microstrip TL which is loaded with an open-ended ECRLH TL is presented as a QBNF. Four unwanted frequencies were used in a dual-band LTE receiver as four notch frequencies which must be eliminated (0.9 GHz, 1.3 GHz, 2.55 GHz, and 3.35 GHz). Also, this QBNF can be applied to simultaneous wireless power and data transfer (SWPDT) system to isolate the wireless power circuit from the data communication circuit. A design technique for the proposed QBNF is presented and its performance is validated using full-wave simulation results and theoretical analysis. The main advantage of this design is an overall rejection greater than 20dB at selected unwanted frequencies. Good agreements between the fullwave simulation and equivalent circuit model results have been achieved which verified the effectiveness of the proposed circuit model. The proposed QBNF is designed on an FR-4 substrate and the dimension of the proposed QBNF is 20 × 22 mm.","PeriodicalId":438881,"journal":{"name":"2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126547649","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}
引用次数: 10
Eigenfrequency Spectrum of Prolate Spheroidal Magneto-optic Cavities 长形球形磁光腔的特征频谱
2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science Pub Date : 2020-08-01 DOI: 10.23919/URSIGASS49373.2020.9232232
G. P. Zouros, G. Kolezas, G. Pagiatakis, J. Roumeliotis
{"title":"Eigenfrequency Spectrum of Prolate Spheroidal Magneto-optic Cavities","authors":"G. P. Zouros, G. Kolezas, G. Pagiatakis, J. Roumeliotis","doi":"10.23919/URSIGASS49373.2020.9232232","DOIUrl":"https://doi.org/10.23919/URSIGASS49373.2020.9232232","url":null,"abstract":"In this work we report on the eigenfrequencies of magnetooptic cavities, their non-degeneration, and their sensitivity, when the cavity deviates from the traditional spherical shape and deforms, due to manufacturing defects, into a prolate spheroid. Since the cavity is statically magnetized due to an external magnetic bias, its permittivity tensor becomes gyroelectric. To solve this problem, we employ a technique based on spheroidal eigenvectors for the expansion of the electromagnetic field in the anisotropic region of the cavity. The eigenfrequencies are obtained by setting system’s matrix determinant equal to zero, with the matrix being obtained after the satisfaction of the boundary conditions at the spheroidal surface. Comparisons with a shape-perturbation technique are performed, and numerical results on the eigenfrequency spectrum are given for different aspect ratio magneto-optic cavities.","PeriodicalId":438881,"journal":{"name":"2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123082812","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}
引用次数: 0
Trend removal and filtering of TEC data by empirical mode decomposition 基于经验模态分解的TEC数据趋势去除与滤波
2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science Pub Date : 2020-08-01 DOI: 10.23919/URSIGASS49373.2020.9232330
Irina A. Kirichenko, D. Kogogin, I. Nasyrov, D. Maksimov
{"title":"Trend removal and filtering of TEC data by empirical mode decomposition","authors":"Irina A. Kirichenko, D. Kogogin, I. Nasyrov, D. Maksimov","doi":"10.23919/URSIGASS49373.2020.9232330","DOIUrl":"https://doi.org/10.23919/URSIGASS49373.2020.9232330","url":null,"abstract":"This article describes a method of empirical mode decomposition that allows processing nonlinear and nonstationary signals. This method was used to remove the trend and filter the data of slant total electron content (hereinafter TEC). The results obtained are compared with the most commonly used approaches to processing total electron content data, which include digital filtering methods such as moving average filtering and removing the trend from the data of total electron content by subtracting approximating polynomials.","PeriodicalId":438881,"journal":{"name":"2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122170806","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}
引用次数: 0
Quasi-Classic Approximation for High Frequency Wave Field through Transionospheric Stochastic Channel of Propagation 高频波场通过过渡层随机信道传播的准经典近似
2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science Pub Date : 2020-08-01 DOI: 10.23919/URSIGASS49373.2020.9232205
V. Gherm, N. Zernov
{"title":"Quasi-Classic Approximation for High Frequency Wave Field through Transionospheric Stochastic Channel of Propagation","authors":"V. Gherm, N. Zernov","doi":"10.23919/URSIGASS49373.2020.9232205","DOIUrl":"https://doi.org/10.23919/URSIGASS49373.2020.9232205","url":null,"abstract":"The numerical technique based on the quasi-classic approximation with complex-valued ray paths is presented for solving the appropriate Markov parabolic equation for the symmetric second order two-frequency and two-position coherence function of the high-frequency field propagating through a stochastic transionospheric channel.","PeriodicalId":438881,"journal":{"name":"2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122268691","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}
引用次数: 0
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