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2018 International Workshop on Computing, Electromagnetics, and Machine Intelligence (CEMi)最新文献

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Nonconforming Domain Decomposition Method for the Flexible Analysis of Multiscale Penetrable Structures 多尺度可穿透结构柔性分析的非协调域分解方法
2018 International Workshop on Computing, Electromagnetics, and Machine Intelligence (CEMi) Pub Date : 2018-11-01 DOI: 10.1109/CEMI.2018.8610647
I. Sekulić, E. Ubeda, J. Rius
{"title":"Nonconforming Domain Decomposition Method for the Flexible Analysis of Multiscale Penetrable Structures","authors":"I. Sekulić, E. Ubeda, J. Rius","doi":"10.1109/CEMI.2018.8610647","DOIUrl":"https://doi.org/10.1109/CEMI.2018.8610647","url":null,"abstract":"The Poggio-Miller-Chan-Harrington-Wu-Tsai (PM-CHWT) integral equation discretized with the method of moments (MoM) in conjunction with the edge-based Rao-Wilton-Glisson (RWG) set is normally used in the electromagnetic scattering analysis of arbitrarily shaped penetrable structures. However, since the RWG basis functions impose the normal-current continuity across adjacent triangles arising in the surface mesh, the RWG-based implementations are only valid for conformal triangulations. In this paper, we introduce a nonconforming PMCHWT domain decomposition method for the scattering analysis of penetrable structures which is valid for conformal and nonconformal meshes. This scheme does not require the definition of artificial enclosing surfaces and auxiliary currents in the process of tearing the original domain. The transition of the electric and magnetic currents across adjacent sub-domains is imposed with the facet-based monopolar-RWG set together with a volumetric testing scheme over the tearing contour. The proposed method allows for the construction of an effective block-diagonal preconditioner for large and multi-scale problems.","PeriodicalId":173287,"journal":{"name":"2018 International Workshop on Computing, Electromagnetics, and Machine Intelligence (CEMi)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128633809","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: 1
Computation of Dust Particle Alignment for Evaluation of Microwave Cross Polarization 微波交叉极化评价中尘埃粒子对准计算
2018 International Workshop on Computing, Electromagnetics, and Machine Intelligence (CEMi) Pub Date : 2018-11-01 DOI: 10.1109/CEMI.2018.8610551
A. Musa, B. Paul
{"title":"Computation of Dust Particle Alignment for Evaluation of Microwave Cross Polarization","authors":"A. Musa, B. Paul","doi":"10.1109/CEMI.2018.8610551","DOIUrl":"https://doi.org/10.1109/CEMI.2018.8610551","url":null,"abstract":"This paper investigates and computes dust particle alignment in relation to cross polarization discrimination. Relevant forces influencing the particle alignment such as inertial torques and turbulence shear are calculated. The result shows how the forces affect the particle alignment, and the torques dominating the alignment of certain dust particle sizes are established.","PeriodicalId":173287,"journal":{"name":"2018 International Workshop on Computing, Electromagnetics, and Machine Intelligence (CEMi)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133490684","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: 1
Investigation of Appropriate Wavelets for Computational Electromagnetics Problems 计算电磁学问题中合适小波的研究
2018 International Workshop on Computing, Electromagnetics, and Machine Intelligence (CEMi) Pub Date : 2018-11-01 DOI: 10.1109/CEMI.2018.8610533
Arun Kumar, M. Hashmi, A. Q. Ansari
{"title":"Investigation of Appropriate Wavelets for Computational Electromagnetics Problems","authors":"Arun Kumar, M. Hashmi, A. Q. Ansari","doi":"10.1109/CEMI.2018.8610533","DOIUrl":"https://doi.org/10.1109/CEMI.2018.8610533","url":null,"abstract":"In this paper, we have identified the Haar wavelet as the appropriate wavelet for the solution of a class of computational electromagnetics (CEM) problems. In the literature, wavelets were used in the context of efficient and fast computation methods for CEM problems.","PeriodicalId":173287,"journal":{"name":"2018 International Workshop on Computing, Electromagnetics, and Machine Intelligence (CEMi)","volume":"454 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124307279","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
Asymptotic Solution of Scattering from Stratified Anisotropic Material Backed by Metal Surface 基于金属表面的分层各向异性材料散射的渐近解
2018 International Workshop on Computing, Electromagnetics, and Machine Intelligence (CEMi) Pub Date : 2018-11-01 DOI: 10.1109/CEMI.2018.8610541
Zhenmin Rao, Siyuan He, Yunhua Zhang, G. Zhu
{"title":"Asymptotic Solution of Scattering from Stratified Anisotropic Material Backed by Metal Surface","authors":"Zhenmin Rao, Siyuan He, Yunhua Zhang, G. Zhu","doi":"10.1109/CEMI.2018.8610541","DOIUrl":"https://doi.org/10.1109/CEMI.2018.8610541","url":null,"abstract":"Recent extensions are reported for the evaluation of electromagnetic scattering from electrically large perfect electric conductor target coated with uniaxial electric anisotropic multilayered media. First, the boundary conditions at the interfaces of the stratified anisotropic medium are employed to determine the complex amplitudes of the scattered fields in spectral domain, which involve a complicated coupling of type I and type II waves existing in uniaxial electric anisotropic medium. Then the scattering from the infinite coated substrate is asymptotically calculated by using the proposed spectral domain method combined with saddle point evaluation. Thereafter, the asymptotic solution is applied to derive the physical optics currents on the surface of the target. Ultimately, comparisons of the proposed asymptotic solution with the reference solutions calculated numerically confirm the validity and efficiency of the proposed solution. Employing the asymptotic solution, the evaluation of the scattering from an electrically large target coated with uniaxial electric anisotropic multi-layered media is realized.","PeriodicalId":173287,"journal":{"name":"2018 International Workshop on Computing, Electromagnetics, and Machine Intelligence (CEMi)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124016648","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
Recent Improvements in Asymptotic RCS Calculations of Large Complex Targets 大型复杂目标渐近RCS计算的最新进展
2018 International Workshop on Computing, Electromagnetics, and Machine Intelligence (CEMi) Pub Date : 2018-11-01 DOI: 10.1109/CEMI.2018.8610629
C. Blaauw
{"title":"Recent Improvements in Asymptotic RCS Calculations of Large Complex Targets","authors":"C. Blaauw","doi":"10.1109/CEMI.2018.8610629","DOIUrl":"https://doi.org/10.1109/CEMI.2018.8610629","url":null,"abstract":"This paper investigates the improvement in accuracy and efficiency of the ray-launching geometrical optics method, as implemented in different versions of FEKO, and shooting-and-bouncing-rays with physical optics method, as implemented in SigmaHat, to calculate the radar cross section (RCS) of a large complex model airframe. A scale model Boeing 707 (106λ) and accurately scanned CAD model is utilized for this study. The investigation is conducted by comparing the calculated RCS to measured data, obtained in a compact range, using angular RCS graphs and ISAR imaging. Interesting results are obtained and some clear improvements can be observed in the accuracy as well as efficiency of the methods.","PeriodicalId":173287,"journal":{"name":"2018 International Workshop on Computing, Electromagnetics, and Machine Intelligence (CEMi)","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116369775","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
Application of Dynamically Constructed Macro Basis Functions to Antenna Arrays with Interconnected Elements 动态构造宏基函数在互连单元天线阵列中的应用
2018 International Workshop on Computing, Electromagnetics, and Machine Intelligence (CEMi) Pub Date : 2018-11-01 DOI: 10.1109/CEMI.2018.8610608
D. Ludick, M. Botha
{"title":"Application of Dynamically Constructed Macro Basis Functions to Antenna Arrays with Interconnected Elements","authors":"D. Ludick, M. Botha","doi":"10.1109/CEMI.2018.8610608","DOIUrl":"https://doi.org/10.1109/CEMI.2018.8610608","url":null,"abstract":"This work considers the simulation of an array consisting of identical, interconnected elements using dynamically constructed macro basis functions. The dynamic construction of the macro basis functions is based on the iterative Jacobi technique and, for the examples presented here, improves the convergence of this method.","PeriodicalId":173287,"journal":{"name":"2018 International Workshop on Computing, Electromagnetics, and Machine Intelligence (CEMi)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124125027","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: 1
LoRaWAN End-Device Antenna Performance LoRaWAN终端设备天线性能
2018 International Workshop on Computing, Electromagnetics, and Machine Intelligence (CEMi) Pub Date : 2018-11-01 DOI: 10.1109/CEMI.2018.8610536
M. B. Knudsen, Simon Aaholm Kreseler, John Rohde
{"title":"LoRaWAN End-Device Antenna Performance","authors":"M. B. Knudsen, Simon Aaholm Kreseler, John Rohde","doi":"10.1109/CEMI.2018.8610536","DOIUrl":"https://doi.org/10.1109/CEMI.2018.8610536","url":null,"abstract":"In this study, we test commercial off-the-shelf Lo-Ra Wanend -devices to evaluate the effect that commercial end-device antenna designs have on a LoRaWAN network.","PeriodicalId":173287,"journal":{"name":"2018 International Workshop on Computing, Electromagnetics, and Machine Intelligence (CEMi)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126327467","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
Impact of Isolation between Solar Panel Elements on RIME Performance aboard JUICE 太阳能电池板元件之间的隔离对JUICE上RIME性能的影响
2018 International Workshop on Computing, Electromagnetics, and Machine Intelligence (CEMi) Pub Date : 2018-11-01 DOI: 10.1109/CEMI.2018.8610616
R. Hahnel, D. Plettemeier, L. Bruzzone
{"title":"Impact of Isolation between Solar Panel Elements on RIME Performance aboard JUICE","authors":"R. Hahnel, D. Plettemeier, L. Bruzzone","doi":"10.1109/CEMI.2018.8610616","DOIUrl":"https://doi.org/10.1109/CEMI.2018.8610616","url":null,"abstract":"The independent ESA mission JUICE (JUpiter ICy moon Explorer) has the goal to explore Jupiter and three of its Galilean moons. The spacecraft (S/C) will launch in the year 2022 and arrives the Jovian system in the year 2030. RIME (Radar for Icy Moons Exploration) and other experiments aboard JUICE will analyse the celestial bodies. Some selected scientific objectives will be the characterization of Ganymede, Europa and Callisto as planetary objects as well as the exploration of potential habitats. Moreover, the Jovian system shall be investigated as an archetype for gas giants.","PeriodicalId":173287,"journal":{"name":"2018 International Workshop on Computing, Electromagnetics, and Machine Intelligence (CEMi)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134561108","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
Experimental Propagation Modelling without a Dedicated Transmitter 无专用发射机的实验传播建模
2018 International Workshop on Computing, Electromagnetics, and Machine Intelligence (CEMi) Pub Date : 2018-11-01 DOI: 10.1109/CEMI.2018.8610568
Richard Maliwatu, A. Lysko, D. Johnson
{"title":"Experimental Propagation Modelling without a Dedicated Transmitter","authors":"Richard Maliwatu, A. Lysko, D. Johnson","doi":"10.1109/CEMI.2018.8610568","DOIUrl":"https://doi.org/10.1109/CEMI.2018.8610568","url":null,"abstract":"The paper considers usage of an existing TV broadcasting transmitter for analyzing propagation and tuning existing propagation models to local conditions for improved accuracy. A comparison of measured signal strength values with the values predicted by Hata and Longley-Rice models is made in the ultra high frequency band for the Southern Peninsula in Cape Town, South Africa.","PeriodicalId":173287,"journal":{"name":"2018 International Workshop on Computing, Electromagnetics, and Machine Intelligence (CEMi)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116565781","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 Multilayer EM Simulation Tool to Assess RF Transparency Control of Building Wall Structures 一种多层电磁仿真工具评估建筑墙体结构射频透明度控制
2018 International Workshop on Computing, Electromagnetics, and Machine Intelligence (CEMi) Pub Date : 2018-11-01 DOI: 10.1109/CEMI.2018.8610538
Rafael F. S. Caldcirinha, David Ferreira, T. Fernandes, I. Cuiñas
{"title":"A Multilayer EM Simulation Tool to Assess RF Transparency Control of Building Wall Structures","authors":"Rafael F. S. Caldcirinha, David Ferreira, T. Fernandes, I. Cuiñas","doi":"10.1109/CEMI.2018.8610538","DOIUrl":"https://doi.org/10.1109/CEMI.2018.8610538","url":null,"abstract":"This paper presents a multilayer electromagnetic (EM) simulation tool to assess the radiofrequency transparency control of building wall structures, developed in Matlab environment, that allows one to explore different layer arrangements and determine the overall frequency response. In particular, the deployment of frequency selective surfaces, either passive or active (electronically controlled), as well as the assessment of EM properties of different types of building walls commonly used in building construction, combined into one complete EM tool, is proposed.","PeriodicalId":173287,"journal":{"name":"2018 International Workshop on Computing, Electromagnetics, and Machine Intelligence (CEMi)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133586950","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: 1
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