ID 原文 译文
12994 本文介绍了近年来时域有限差分(finite-difference time-domain, FDTD)法和时域有限元(finite element time-domain,FETD)无条件稳定算法方面的研究进展以及FETD算法的更新方案时域非连续伽辽金(discontinuous Galerkin time-domain, DGTD)方法的新进展。 In ths paper, the research progress of finite difference time domain and unconditional stabllity algorithm of finite element time—domain in recent years is introduced.In addition, the new development of discontinuous Galerkin method time-domain, which is an updated scheme of finite element method time-domain, is introduced.
12995 辛时域有限差分(symplectic finite-difference time-domain, SFDTD)算法作为ー种高精度、高稳定、高保真度的时域数值算法,在多个学科领域得到了广泛的应用，并已发展成为一种较为成熟的数值计算方法。 As a high precision, high-stability and high fidelity time-domain numerical algorithm, the symplectic finite difference time domain (SFDTD) method has been widely used in many disciplines as a mature numercal calculation method.
12996 本文主要对SFDTD算法的构建、数值优化以及相关关键技术处理进行了介绍。 The paper mainly introduces the construction of SFDTD algorithm, numerical optimization and related key techncal processing.
12997 重点总结了基于时间和空间上的差分近似优化处理方法，处理不连续边界及金属曲面时的局部修正方法,以及时域电磁仿真中不可或缺的三大关键技术：总场/散射场技术、完全匹配层(perfect matched layer, PML)、近远场变换技术。 Focusing on the opt invation methods of the difference approximations both in spatial and temporal direction, local correcton methods for discont inuous boundary and curved metallic surface, and three key techniques that are indispensable in time domain electromagnetic simulation, namely total felds/scattering fields (TF/SF) technque, perfect matched layer (PML) and near-far transform technique.
12998 最后，介绍了 SFDTD算法在电磁仿真、量子力学求解、多物理问题建模与分析中的具体应用。 At last, the applications of SFDTD method in electromagnetic simulation, quantum mechanical solution and multi-physic problems modeling and analysis are also introduced.
12999 本专栏文章旨在从雷达、隐身、精确制导、舰船、汽车等几大系统研制角度，提炼出十大电磁计 算问题，并略述每个问题的研究进展，以及未来目标，为思考电磁计算未来发展方向抛砖引玉。 This paper aims to extract ten computational electromagnetic problems from the development of several electronic systems, including radar, stealth, preci s i on gu i dance, naval sh i ps, automobiles. The research status and future objectves of these ten problems are briefly analyzed to provide samples of considering future research directions of computational electromagnetics.
13000 雷达目标总散射场可近似为若干散射中心贡献的叠加，而每ー个散射中心都对应着特定的电磁散射机理，这些特定散射机理的散射场可表示成输入为雷达参数（频率、极化、视向角）和目标参数（几何# 材料）的参数化模型。 The total scattering field of a radar target can be approximated as the superposition of the scattermg contributions from scattering centers (SC). Each of types of SCs corresponds to a specific scattering mechanism,and the scattering field of a specific scattering mechanism can be expressed as a parametered model with input as radar parameters (frequency, polarization, aspect angle) and target parameters (geometry, material).
13001 散射中心参数化模型在雷达回波实时模拟、半实物仿真、雷达目标识别等领域得到了广泛的关注。 SC model has been paid much attention in real-time simuation of radar echo, semi-physicai simulation and radar target recognition.
13002 文中总结了雷达散射中心模型的发展历程,包括散射中心数学模型和散射中心参数提取方法， 以及散射中心建模的难点问题和未来的研究方向。 This paper summarizes the development of the SC models, the extracting methods of parameters in SC models, the difficult problems in SC modeling and the future hot-topcs.
13003 期望该文可为从事该方面研究的科研人员提供一些参考。 lt is expected that this paper can provide a reference for researchers engaged in this field.