2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET)最新文献_第6页

Some Diffraction Problems Involving Conical Geometries and their Rigorous Analysis 一些涉及圆锥几何的衍射问题及其严密分析

2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET) Pub Date : 2018-07-01 DOI: 10.1109/mmet.2018.8460377

D. Kuryliak

{"title":"Some Diffraction Problems Involving Conical Geometries and their Rigorous Analysis","authors":"D. Kuryliak","doi":"10.1109/mmet.2018.8460377","DOIUrl":"https://doi.org/10.1109/mmet.2018.8460377","url":null,"abstract":"The wave diffraction from the hollow finite and truncated perfectly conducting (rigid., soft) conical scatterers is considered. It is supposed that conical surfaces have zero thickness. The diffraction problems are formulated in the spherical coordinate system as the boundary value problems for the Helmholtz equation with respect to the scattered scalar potentials. The diffracted field is given by expansion in the series of eigenfunctions for subregions formed by the scatterers. Due to enforcement of the conditions of continuity together with the orthogonality properties of the Legendre functions the diffraction problems are reduced to infinite system of linear algebraic equations (i.s.l.a.e.). Usage of the analytical regularization approach transforms i.s.l.a.e. to the second kind and allows to justify the truncation method for obtaining numerical solution in the required class of sequences. These systems are proved to be regulated by a couple of operators, which consist of the convolution type operator and the corresponding inverted one. The elements of the inverted operator can be found analytically using the factorization technique.","PeriodicalId":343933,"journal":{"name":"2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130848423","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

2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET) Pub Date : 2018-07-01 DOI: 10.1109/mmet.2018.8460308

引用次数: 0

Drop Oscillation Estimate with Multi-polarization Radar 多极化雷达降振估计

2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET) Pub Date : 2018-07-01 DOI: 10.1109/MMET.2018.8460370

Y. Averyanova, A. Rudiakova, F. Yanovsky

引用次数: 2

Comparative Study of the Goldfarb Iterative and the Genetic Algorithm Methods for Solving Inverse Problems 求解逆问题的Goldfarb迭代法与遗传算法的比较研究

2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET) Pub Date : 2018-07-01 DOI: 10.1109/MMET.2018.8460316

M. Antyufeyeva, D. Batrakov, A. Batrakova, Alexandr V. Antyufeyev

引用次数: 0

Structural Similarity Index with Predictability of Image Blocks 具有图像块可预测性的结构相似性指数

2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET) Pub Date : 2018-07-01 DOI: 10.1109/MMET.2018.8460285

Mykola Ponomarenko, K. Egiazarian, V. Lukin, V. Abramova

{"title":"Structural Similarity Index with Predictability of Image Blocks","authors":"Mykola Ponomarenko, K. Egiazarian, V. Lukin, V. Abramova","doi":"10.1109/MMET.2018.8460285","DOIUrl":"https://doi.org/10.1109/MMET.2018.8460285","url":null,"abstract":"Structural similarity index (SSIM) is a widely used full-reference metric for assessment of visual quality of images and remote sensing data. It is calculated in a block-wise manner and is based on multiplication of three components: similarity of means of image blocks, similarity of contrasts and a correlation factor. In this paper, two modifications of SSIM are proposed. First, a fourth multiplicative component is introduced to SSIM (thus obtaining SSIM4) that describes a similarity of predictability of image blocks. A predictability for a given block is calculated as a minimal value of mean square error between the considered block and the neighboring blocks. Second, a simple scheme for calculating the metrics SSIM and SSIM4 for color images is proposed and optimized. Effectiveness of the proposed modifications is confirmed for the specialized image databases TID2013, LIVE, and FLT. In particular, the Spearman rank order correlation coefficient (SROCC) for the recently introduced FLT Database, calculated between the proposed metric color SSIM4 and mean opinion scores (MOS), has reached the value 0.85 (the best result for all compared metrics) whilst for SSIM it is equal to 0.58.","PeriodicalId":343933,"journal":{"name":"2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123578547","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: 19

Modal Analysis of Optomagnonic Resonators (Invited paper) 光磁谐振器的模态分析(特邀论文)

2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET) Pub Date : 2018-07-01 DOI: 10.1109/MMET.2018.8460290

G. P. Zouros

引用次数: 0

Asymptotic Solution to the Scattering By Anisotropic Spheroids 各向异性球体散射的渐近解

2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET) Pub Date : 2018-07-01 DOI: 10.1109/MMET.2018.8460253

G. Kolezas, G. P. Zouros, J. Roumeliotis

引用次数: 0

Torch Discharge Active Resistance Determination Considering Its Equivalent Inductance 考虑等效电感的焊枪放电有源电阻的确定

2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET) Pub Date : 2018-07-01 DOI: 10.1109/MMET.2018.8460295

A. Puzanov, A. Kuleshov, Y. Kovshov, S. Ponomarenko

引用次数: 0

Optoelectronic Aided Polarimetric Weather Radar Signal Processing 光电辅助极化气象雷达信号处理

2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET) Pub Date : 2018-07-01 DOI: 10.1109/MMET.2018.8460268

A. Rudiakova, A. Lipinskii, F. Yanovsky

引用次数: 4

Some Inexactnesses of the European NeQuick Model and Possible Ways of their Correction 欧洲NeQuick模式的一些不精确之处及可能的修正方法

2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET) Pub Date : 2018-07-01 DOI: 10.1109/mmet.2018.8460447

S. Grinchenko

{"title":"Some Inexactnesses of the European NeQuick Model and Possible Ways of their Correction","authors":"S. Grinchenko","doi":"10.1109/mmet.2018.8460447","DOIUrl":"https://doi.org/10.1109/mmet.2018.8460447","url":null,"abstract":"NeQuick model is used in particular in solving problems of radio wave propagation in ionosphere. It allows of calculation of the altitude profiles of electron density above any point of the globe in a wide range of altitudes at any time. The makers of NeQuick model use analytical formulas for the description of the separate E, F1, and F2 layers in constructing of the electron density profile for the whole altitude region. The formula parameters use previously calculated values of electron density and height of the layer peaks. But the insufficient correctness of algorithmization results in some inaccuracies of construction of total profile of electron density in heights of E and F1 regions. For example, there are time discontinuities of daily variations of electron density at the moments corresponding to appearance or disappearance of layer F1. The E and F1 layers practically do not manifest themselves on figures of the electron density profiles. In addition, the previously calculated F1-layer peaks do not lie on the electron density profiles. By means of the algorithm of construction of electron density profile developed by the author of this paper it is possible to describe correctly an altitude profile of electron density on its geometrical parameters of E, F1, and F2 regions. The corrected altitude profiles would change continuously with local time.","PeriodicalId":343933,"journal":{"name":"2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133251633","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