ID 原文 译文
12924 最后总结了积分方程DDM的主要挑战以及展望 Finally, the main challenges and prospects of the domam decomposition method of integral equation are summarXed.
12925 多尺度复杂电子系统的电磁场问题难以用单ー的计算电磁学方法进行高效数值计算。 The electromagnetic fields in multi-scale complex electronic systems are difficult to compute with conventional methods in computational electromagnetics.
12926 基于区域分解方法和惠更斯等效原理!提出了频域广义传输矩阵(generalized transition matrix, GGM)方法：将系统分解为多个子模块，通过电场积分方程(electric field integreal equation, EFIE)把各个子模块的电磁特性进行提炼，再考虑所有子模块之间的电磁耦合，计算系统整体电磁场分布。 Generalized transition matrix (GTM) method has been proposed based on domain decomposition method (DDM) and Huygens' equvalence principle, in which a complex system is divided into many sub-blocks. Every sub-block is analyzed inependently to get its electromagnetic characteristics. By tak ing into account mutual coup i ings among all blocks, the electromagnets field in the whole system can be calculated.
12927 GGM方法把多尺度问题转化为 尺度相对比较单一的问题进行处理，在分析各种复合结构、非均匀各向异性介质、大型相控阵天线等电磁散射特性时，提供了灵活的解决方案。 According to generalzed transition matrix method, a multi-scale system is turned into an equvalent system consisting of sub-blocks with roughly the same scae. It provides fexib/e so/utions to analyze the electromagnetic scattering probems involved in compex systems such as scatterers with hybrid structures, inhomogeneous isotropic media, and large-scae phased antennas.
12928 论文给出了GTM在手征介质、开口腔体以及Vivaldi相控阵天线电磁特性分析中的应用算例，当未知量个数压缩到原来的十分之一时，GTM计算结果与直接用矩量法(methed of moment, MoM)求解的计算结果非常吻合。 Numerica exampes of applying GTM to anayzing the eectromagnetic properties of a chiral scatterer, open-ended cavity and a vivaldi antenna array are presented, in which the unknowns have been reduced to about 1/10 of their original ones, while the numerica! resuts with GTM sill agree very well with those obtained with method of moment (MoM) directly.
12929 GTM可以简洁地表示目标问题的电磁散射特征，与传统MoM 相比，大幅度减少了基函数的数量，具有较高的计算精度和效率。 The target scattering properties can be expressed concisely by the general transition matrix. Compared with traditional methods of moment, the number of basis function is greatly reduced via GTM, hence improvi ng the computational efficiency.
12930 为了研究复杂目标与粗糙地面的复合电磁散射，提出了一种粗糙地面上复杂目标散射中心参数化建模的方法。 To get the composite electromagnetic scattering from the ground rough surface with complex target above, a parametric model of complex targets on the ground rough surface is proposed.
12931 首先对复杂目标进行高精度三维几何建模,同时对地面的三维几何模型进行数值模拟。 Firstly, high-precision 3D geometrc modelmg of complex targets is carried out, and the model of ground is numercally simulated.
12932 然后直接从模型出发，采用射线分裂追踪技术对空间射线进行标记与归类,将复杂环境和目标的强散射源进行分离及定量表征。 With the help of the ray spiit tracking method, the strong scattering source of the complex environment and the target is decomposed and quantitatively characterized by marking and classifying the spatial ray directly from the established model.
12933 最后基于属性散射中心模型形式,正向确定散射中心模型的参数，构建粗糙地面上复杂目标散射中心参数化模型。 Based on the form of attribute scattering center model, the parameters of the scattering center model are determined in the forward direction, the parametrc model of the target on the rough surface is constructed.