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电大尺寸     
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  electrically large
     DDM/FEM-BIE Approach for Analyzing EM Scattering of Electrically Large Open-Ended Cavities
     电大尺寸开口腔体电磁散射特性的DDM/FEM-BIE混合法分析
短句来源
     The hybrid iterative method of moments and physical-optics method of moments(MoM-PO) is used to analyze radiation pattern of antenna around an electrically large platform modeled with non-uniform rational B-spline(NURBS) surfaces.
     本文采用基于非均匀有理B样条(NURBS,Non-Uniform Rational Bezier Spline)曲面建模技术的物理光学方法结合矩量法(Method of Moments-Physical Optics)分析位于电大尺寸平台附近天线的辐射方向图.
短句来源
     Fast Calculation on MEI Coefficients and its Application in Electrically Large Electromagnetic Scattering Problems
     MEI系数的快速计算及其在电大尺寸电磁散射问题中的应用
短句来源
     Fast MEI Algorithm and its Application on Electrically Large Electromagnetic Scattering Problems
     快速MEI算法及其在电大尺寸电磁散射问题中的应用
短句来源
     Analysis of Antenna on Electrically Large Conducting Plane by HFSS/UTD
     HFSS/UTD混合法计算电大尺寸导体上的天线
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  large electrical sizes
     To further speed up the ability of solution of electromagnetic scattering from the object with large electrical sizes, a higher order scheme of multilevel fast multipole algorithm (MLFMA) is introduced in this paper.
     为进一步提高电大尺寸目标散射求解能力 ,采用了基于多层快速多极子方法的高阶方法。
短句来源
  “电大尺寸”译为未确定词的双语例句
     Analysis of Electrically-large Optical Waveguide Devices Using High-order FDTD Method
     高阶FDTD法分析电大尺寸光波导器件
短句来源
     Studies on the Algorithm of Radar Cross-Section of a Large-Size Model
     电大尺寸模型雷达散射截面(RSC)算法研究
短句来源
     By means of the orthogonal transform and its fast algorithm, the generalized discrete convolution method is presented in this paper under the condition of minimal Frobenius norm of the iterative operator.
     利用正交变换及其快速算法,以迭代算子的Frobenius范数最小为准则,推广了求解电大尺寸电磁场问题的离散卷积法和修正离散卷积法,提出了一类迭代法,即广义离散卷积法。
短句来源
     Analysis of the Scattering Characteristics of Electric-Large-Size Waveguide Structures with an Efficient Direct Finite Element Method
     分析电大尺寸导波结构散射特性的一种高效直接有限元方法
短句来源
     By decomposing the original domain into several independently sub domains, the consumption of computer memory and CPU time decrease from O(N 2) to O(N/m) and O(N) , respectively, where m is the number of sub-domains.
     同时 ,由于每个子域可以单独求解 ,使内存开销从 O(N2 )下降为 O(N/m) (m为子域个数 ) ,从而可以很好地处理电大尺寸或超大尺寸柱体的散射问题。
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  electrically large
It is especially applicable and useful to characterize the electromagnetic scattering by, and radiation in the presence of, the electrically large 3-D objects in multilayered media.
      
Combined with the FD equations derived for inhomogeneous anisotropic media, this boundary condition is convenient and effective to be applied to the EM scattering by electrically large objects of complex media.
      
Algebraic multi-grid method in two-dimension electrically large problems
      
Hybrid analysis for surface-wave effects on electrically large 2-D bodies with cracks
      
A hybrid technique to compute the surface-wave scattering of electrically large 2-D bodies with cracks by combining the current-based hybrid method and the finite element method is presented in this letter.
      
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  electrically large dimension
Millimeter wave scattering by an infinite plane metallic grating is used as the examples to describe its implementation, whose analysis usually needs fast algorithms because of electrically large dimension.
      
The electromagnetic wave scattering of 2-D frequency-selective surface is used as the examples to describe its implementation, whose analysis usually needs fast algorithms because of electrically large dimension.
      


The on-surface radiation condition (OSRC) method which is based upon radiation boundary condition applied directly on the surface of a scatterer is a high-frequency approximate approach for electomagnetic scattering. In this paper the point matching method is used to solve OSRC equation for the scattering magnetic field on the surface of a perfectly conducting cylinder for TE polarized incident wave. The cases of circular and elliptic cylinders are used to show that OSRC method is suitable for scatterers with...

The on-surface radiation condition (OSRC) method which is based upon radiation boundary condition applied directly on the surface of a scatterer is a high-frequency approximate approach for electomagnetic scattering. In this paper the point matching method is used to solve OSRC equation for the scattering magnetic field on the surface of a perfectly conducting cylinder for TE polarized incident wave. The cases of circular and elliptic cylinders are used to show that OSRC method is suitable for scatterers with electrical-large dimension and large radii of curvature of the surface and yields good results for the surface current and the radar cross section. This method is simple and convenient for engineering applications.

表面辐射条件(OSRC)法是一种将辐射边界条件直接应用于散射体表面以解决电磁散射问题的高频近似方法。本文使用点匹配法求解TE极化入射波的理想导电柱体的表面散射磁场所满足的OSRC方程。以圆柱及椭圆柱为例说明了OSRC方法适用于电大尺寸的及表面曲率半径较大的散射体,可提供良好的表面感应电流及雷达散射截面的结果。这种简便方法易于在工程上应用。

On the basis of the discrete convolution method (DOM), a modified discrete convolution method (MDOM) is proposed by zeroizing the Frobenius norm of the iterative matrix. The storage space and the multiplicative operations of MDOM are similar to those of DOM, but the convergence of the former is more stable than that of the latter. The MDOM is suitable for the electromagnetic scattering or radiation of an electrically-large body, especially for the scattering of the finite periodic structure.

该文在将离散卷积法(DCM)公式化的基础上,通过修改迭代矩阵,使其Frobenius范数趋于零,得到一种新的迭代矩阵,形成了修正离散卷积法.计算结果表明,该方法在存贮量和迭代计算量方面与DCM相仿,但收敛范围更广.适用于电磁辐射与散射问题,尤其适用于电大尺寸的有限周期结构电磁散射.

The conjugate gradient method and the fast Fourier transform(CG-FFT)are used in ealculating the mutual coupling between polygonal linear antennas by the moment method,espeaily for electrically large-dimensional and small-dimensional scattering bodies。Comparison with Gauss method,a great deal of internal storage Of computer is saved and the accuracy of ealculation is improved,As a typical example,the current amplitude and phase on the triangular loop antenna and the dipole antenna are obtainde respectively。Finally,the...

The conjugate gradient method and the fast Fourier transform(CG-FFT)are used in ealculating the mutual coupling between polygonal linear antennas by the moment method,espeaily for electrically large-dimensional and small-dimensional scattering bodies。Comparison with Gauss method,a great deal of internal storage Of computer is saved and the accuracy of ealculation is improved,As a typical example,the current amplitude and phase on the triangular loop antenna and the dipole antenna are obtainde respectively。Finally,the mutual coupling between a triangular loop antenna and a dipole antenna is given。

在采用矩量法计算多边形状线天线间互耦的过程中应用共轭梯度及快速傅里叶算法,导出了计算公式,能方便地对电大尺寸和电小尺寸的散射体进行有效的数值运算。以三角形环天线和偶极天线为例计算出了天线上电流的幅度和相位分布以及该法与高斯法的比较结果。结果表明共轭梯度及快速傅里叶算法的运用可节省大量计算机内存并提高计算精度。

 
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