Back-scattered field of electrically large concave cavity is analyzed with CRmethod.
利用复射线法分析了电大尺寸凹腔的后向散射场。
The Pseudospectral time-domain (PSTD) algorithm can be used to solve the scattering of the electrically large objects.
伪谱时域（PSTD）方法可以处理电大尺寸目标电磁散射问题。
Numerical results show that this method can improves the efficiency and precision, especially for electrically large objects.
数值计算结果表明：这种方法具有高精度性和高效性，对于电大尺寸目标问题，效果更加显著。
As an effective high frequency method, the uniform geometrical theory of diffraction (UTD) has been widely used for calculating RCS of electrically large complex targets.
在复杂外形的电大尺寸目标的电磁散射特性计算中，由于一致性几何绕射理论(utd)的本身特点所局限，直接计算必然会带来很大的误差。
The theory of Incremental length diffraction coefficients (ILDC) is one of the efficient methods to calculate the edge diffraction of electrically large scaled complex objects.
增量长度绕射系数理论（ILDC）是对电大尺寸复杂目标进行边缘绕射计算的有效方法之一。
Then the derivation of local illumination source is reported, the near-field electromagnetic scattering characteristics of some electrically large structures are calculated and analyzed.
论文在推导出实现局部照射的激励源的基础上，计算并分析一些电大结构的近场局部照射下的电磁散射特性。
Aimed at the difficulty in calculating an electrically large size antenna by using MOM, a far zone approximate method based on MOM (MOM-FZ) was presented for calculating radar antenna pattern.
针对运用矩量法计算电大尺寸天线时遇到的严重困难，提出一种基于矩量法的计算天线远场的远区近似(MOM- FZ)方法。
The projection iterative method (PIM) is used to analyze electromagnetic scattering characteristics of two dimensional and three dimensional electrically large conducting objects in this paper.
将投影迭代法应用于分析任意二维和三维电大导体目标的电磁散射特性。
Finally the scattering problems of complex-shaped electrically-large 2d PEC targets are solved based on the hybrid method of IPO and MoM, which can be easily expanded to the 3-d condition.
将矩量法与迭代物理光学法结合解决带有槽缝结构的二维电大尺寸目标的电磁散射问题，并将解决的问题范围拓展到三维电大尺寸金属目标的情况，为混合方法的研究提供了一定的参考依据。
The systems comprise two engine-driven, electrically controlled, variable displacement hydraulic pumps and four large and four small hydraulically controlled, variable displacement hydraulic motors.
两个发动机驱动的电控液压泵（排量可变），四个大型和四个小型的液压控制马达（排量可变）。
Compared with"conventional"electrically small antennas, CFA has the merits of small dimension and high efficiency, and so on. But its radial dimension is large, and its structure is complicated.
相对于“传统”电小天线，CFA天线有整体尺寸小、辐射性能优良等优点，但其径向尺寸大，结构也较复杂。
Compared with"conventional"electrically small antennas, CFA has the merits of small dimension and high efficiency, and so on. But its radial dimension is large, and its structure is complicated.
相对于“传统”电小天线，CFA天线有整体尺寸小、辐射性能优良等优点，但其径向尺寸大，结构也较复杂。
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