发布求助
文献互助 智能选刊 最新文献

MMET '96. VIth International Conference on Mathematical Methods in Electromagnetic Theory. Proceedings最新文献

筛选
英文 中文
Remote sensing of water salinity 水盐度遥感
MMET '96. VIth International Conference on Mathematical Methods in Electromagnetic Theory. Proceedings Pub Date : 1996-09-10 DOI: 10.1109/MMET.1996.565754
M. Kachan, S. Pimenov
{"title":"Remote sensing of water salinity","authors":"M. Kachan, S. Pimenov","doi":"10.1109/MMET.1996.565754","DOIUrl":"https://doi.org/10.1109/MMET.1996.565754","url":null,"abstract":"For the remote sensing of water surface salinity we use the radar method of measuring the power reflection coefficient which is defined by the complex dielectric constant (CDC). The same parameter, in fact, is estimated in UHF radiometric measurements of water salinity. In the case considered here of normal incidence of a plane electromagnetic wave on a smooth water surface the value of the reflection coefficient is defined by the Fresnel relation.","PeriodicalId":270641,"journal":{"name":"MMET '96. VIth International Conference on Mathematical Methods in Electromagnetic Theory. Proceedings","volume":"129 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121370160","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
Wave transformation in smoothly nonregular rectangular waveguide with local degeneracy and longitudinally gyrotropic filling 具有局部简并和纵向回旋填充的光滑非规则矩形波导中的波变换
MMET '96. VIth International Conference on Mathematical Methods in Electromagnetic Theory. Proceedings Pub Date : 1996-09-10 DOI: 10.1109/MMET.1996.565683
V. Borulko
{"title":"Wave transformation in smoothly nonregular rectangular waveguide with local degeneracy and longitudinally gyrotropic filling","authors":"V. Borulko","doi":"10.1109/MMET.1996.565683","DOIUrl":"https://doi.org/10.1109/MMET.1996.565683","url":null,"abstract":"In the present work we consider local coupling of and TE/sub 2m+l/ and TE/sub 0.2n+1/ modes propagating in a rectangular waveguide formed by the surfaces x=/spl plusmn/R(/spl beta/z) and y=/spl plusmn/L(/spl beta/z) filled by an homogeneous longitudinally gyrotropic medium. Formulas obtained can be used for designing electrically controlled nonreciprocal polarizers and mode transformers.","PeriodicalId":270641,"journal":{"name":"MMET '96. VIth International Conference on Mathematical Methods in Electromagnetic Theory. Proceedings","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123471635","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: 3
Bilinear interpolation from polar to rectangular point raster for inverse problem solving 从极坐标到矩形点阵的双线性插值反问题求解
MMET '96. VIth International Conference on Mathematical Methods in Electromagnetic Theory. Proceedings Pub Date : 1996-09-10 DOI: 10.1109/MMET.1996.565751
I. Dragan, B. Iavors'kyi, L. Chorna
{"title":"Bilinear interpolation from polar to rectangular point raster for inverse problem solving","authors":"I. Dragan, B. Iavors'kyi, L. Chorna","doi":"10.1109/MMET.1996.565751","DOIUrl":"https://doi.org/10.1109/MMET.1996.565751","url":null,"abstract":"The goal of tomographic imaging systems is to provide a visual information from the inside of examined objects. In the main application area of these systems-the medical diagnosis-the examined object is the human body. It is very special object because of its nature. That is why it is very important to get source data for a least time. Another motivation of using the efficient algorithm for the image reconstruction methods in thermographic systems is the fact that the required information is accessible to the system in some indirect form only. The task of tomographic reconstruction is to find out from the measured indirect data the unknown function f(x,y).","PeriodicalId":270641,"journal":{"name":"MMET '96. VIth International Conference on Mathematical Methods in Electromagnetic Theory. Proceedings","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125072523","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
Mathematical model of losses in multi-mode optical fibers at guide axis bends 多模光纤导轴弯曲损耗的数学模型
MMET '96. VIth International Conference on Mathematical Methods in Electromagnetic Theory. Proceedings Pub Date : 1996-09-10 DOI: 10.1109/MMET.1996.565744
M. Klimash
{"title":"Mathematical model of losses in multi-mode optical fibers at guide axis bends","authors":"M. Klimash","doi":"10.1109/MMET.1996.565744","DOIUrl":"https://doi.org/10.1109/MMET.1996.565744","url":null,"abstract":"The peculiarity of optical-fiber data transmission systems is that it is necessary to lay fibers into optical modules with comparative reserve to eliminate fiber strain effects. It is necessary to find the parameters of fiber bend in an optical module with given fiber-loss level, construction length interval, comparative cable lengthening and primary fiber characteristics. To solve this problem it is necessary to obtain the analytical dependence of whole mode stream losses vs. bend parameters and primary optical-fiber characteristics. The analysis of mode (or mode-group) energy interchange within the bend leads to the energy diffusion equation.","PeriodicalId":270641,"journal":{"name":"MMET '96. VIth International Conference on Mathematical Methods in Electromagnetic Theory. Proceedings","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125166607","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
Design efficient FFT digital processor for electromagnetic fields 设计高效的FFT数字电磁场处理器
MMET '96. VIth International Conference on Mathematical Methods in Electromagnetic Theory. Proceedings Pub Date : 1996-09-10 DOI: 10.1109/MMET.1996.565747
L. Rozhkov
{"title":"Design efficient FFT digital processor for electromagnetic fields","authors":"L. Rozhkov","doi":"10.1109/MMET.1996.565747","DOIUrl":"https://doi.org/10.1109/MMET.1996.565747","url":null,"abstract":"We present a FFT specialized signal processor, which has been designed to perform calculations with digital signals represented by a special one-bit code called the delta code. Therefore, to perform large word length multiplication is not necessary. Sufficient benefit is derived, because the internal processor's performance is increased, and the hardware becomes much simpler.","PeriodicalId":270641,"journal":{"name":"MMET '96. VIth International Conference on Mathematical Methods in Electromagnetic Theory. Proceedings","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128535321","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
Eigen electromagnetics wave in round waveguide with biisotropic mode 具有生物各向同性模式的圆波导中的本征电磁波
MMET '96. VIth International Conference on Mathematical Methods in Electromagnetic Theory. Proceedings Pub Date : 1996-09-10 DOI: 10.1109/MMET.1996.565652
V. Meshcheryakov, A. Mudrov
{"title":"Eigen electromagnetics wave in round waveguide with biisotropic mode","authors":"V. Meshcheryakov, A. Mudrov","doi":"10.1109/MMET.1996.565652","DOIUrl":"https://doi.org/10.1109/MMET.1996.565652","url":null,"abstract":"The general method for determination of the structure of fields and integrated characteristics consists of construction of Maxwell equations for a boundless biisotropic environment on the basis of which, in view of the boundary conditions, is formed an eigenvalue equation. We describe an alternative approach consisting of the numerical integration of a system of wave equations with given boundary conditions. This permits us to expand the class of soluble problems and to consider waveguides of continually non-uniform structure with biisotropic cross section by filling.","PeriodicalId":270641,"journal":{"name":"MMET '96. VIth International Conference on Mathematical Methods in Electromagnetic Theory. Proceedings","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126262274","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
The identify spectrum-time description of movements in lumped and distributed dynamic systems 集中和分布式动态系统中运动的识别频谱时间描述
MMET '96. VIth International Conference on Mathematical Methods in Electromagnetic Theory. Proceedings Pub Date : 1996-09-10 DOI: 10.1109/MMET.1996.565763
S. Vladimirov
{"title":"The identify spectrum-time description of movements in lumped and distributed dynamic systems","authors":"S. Vladimirov","doi":"10.1109/MMET.1996.565763","DOIUrl":"https://doi.org/10.1109/MMET.1996.565763","url":null,"abstract":"The dynamic systems with many degrees of freedom represent special interest iu the various areas of physics, acoustics, electronics, electrodynamics, automatics, biology and their numerous applications. At present, the theory of linear dynamic systems has a quite completed form, however, the theory of nonlinear multifrequency structures is far from being complete. In particular, wide use of asymptotic methods for similar kind objects research, has resulted in loss of the whole world of the possible decisions for a long term world, so called dynamic chaos. The purpose of the present paper consists in the establishment and proof of the equations of movement of these two classes of dynamic systems coincide both in form and in essence, under some additional requirement, which, besides, all physically practicable systems satisfy.","PeriodicalId":270641,"journal":{"name":"MMET '96. VIth International Conference on Mathematical Methods in Electromagnetic Theory. Proceedings","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122076949","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
Numerical method for solving of three-dimensional scattering problems from penetrable body 求解可穿透体三维散射问题的数值方法
MMET '96. VIth International Conference on Mathematical Methods in Electromagnetic Theory. Proceedings Pub Date : 1996-09-10 DOI: 10.1109/MMET.1996.565624
A. B. Samokhin
{"title":"Numerical method for solving of three-dimensional scattering problems from penetrable body","authors":"A. B. Samokhin","doi":"10.1109/MMET.1996.565624","DOIUrl":"https://doi.org/10.1109/MMET.1996.565624","url":null,"abstract":"Summary form only given. We formulate the method of minimal discrepancies for solving some linear equations with a non-self-adjoint operator and prove the theorem which determines the conditions for the convergence of the iterations to the solution. In particular, this method can be applied to solve integral equations with a dissipative operator. Volume integral equations (singular equations for electromagnetic problems and Fredholm equations of the second kind for acoustic problems) which describe three-dimensional scattering problems from penetrable inhomogeneous bodies are considered. With the help of energetic inequalities the feasibility of the iterative method to obtain a solution of such integral equations is demonstrated. To approximate these equations the moment and collocation methods are applied. We prove that the approximate solution converges to the exact solution of the integral equations as the number of basis functions or collocation points tends to infinity. To reduce the computing cost, the direct and inverse discrete Fourier transforms are used. To accelerate the convergence of the iterations to the solution, the multistep minimum-discrepancy method, a generalization of the iterative procedure, is formulated and used.","PeriodicalId":270641,"journal":{"name":"MMET '96. VIth International Conference on Mathematical Methods in Electromagnetic Theory. Proceedings","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125499891","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
The calculation and optimization of directional characteristics of vibrator antenna with limited dimensional screen 有限尺寸屏振子天线方向特性的计算与优化
MMET '96. VIth International Conference on Mathematical Methods in Electromagnetic Theory. Proceedings Pub Date : 1996-09-10 DOI: 10.1109/MMET.1996.565775
N. Gorobets, N. Yeliseyeva
{"title":"The calculation and optimization of directional characteristics of vibrator antenna with limited dimensional screen","authors":"N. Gorobets, N. Yeliseyeva","doi":"10.1109/MMET.1996.565775","DOIUrl":"https://doi.org/10.1109/MMET.1996.565775","url":null,"abstract":"Using the uniform geometrical theory of diffraction, algorithms and programs have been derived for calculating and analyzing the directive characteristics of a radiating elementary electric vibrator with an ideally conducting rectangular plane screen at any observation direction. The directive gains of the analyzed system in a normal direction to the screen have been investigated when changing sizes of the screen over wide ranges, for various distances between the vibrator and the screen.","PeriodicalId":270641,"journal":{"name":"MMET '96. VIth International Conference on Mathematical Methods in Electromagnetic Theory. Proceedings","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126496556","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
Restoration of radio image of non coherent radio sources, basing on measured visibility function 基于实测能见度函数的非相干射电源图像恢复
MMET '96. VIth International Conference on Mathematical Methods in Electromagnetic Theory. Proceedings Pub Date : 1996-09-10 DOI: 10.1109/MMET.1996.565760
V. Koshovy, A.B. Lozynsky, I.M. Romanishin, Y.V. Romancev
{"title":"Restoration of radio image of non coherent radio sources, basing on measured visibility function","authors":"V. Koshovy, A.B. Lozynsky, I.M. Romanishin, Y.V. Romancev","doi":"10.1109/MMET.1996.565760","DOIUrl":"https://doi.org/10.1109/MMET.1996.565760","url":null,"abstract":"A new multicircle method of radio image restoration of radio sources, based on measured by radiointerferometric methods visibility function, is proposing. The algorithm of determination the number of the circles, their angular diameter and flux density, based on Fourier-Bessel series, is shown. The radio image of Cas A was restored on data, obtained from the measurements of this source. These measurements were performed on short-base (up to 2000 D//spl lambda/) interferometer URAN-3. As has been found, the model of the large-scale structure, deducted from the measurements on the meter waveband, is inconsistent with the results, obtained on decameter wavelengths.","PeriodicalId":270641,"journal":{"name":"MMET '96. VIth International Conference on Mathematical Methods in Electromagnetic Theory. Proceedings","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129217130","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信