ID 原文 译文
12944 其次，对高频散射场的高振荡特性，提出了数值最速下降路径法来计算高频散射场。 Next, due to the high l y osclliatory property of the high frequency eectromagnetic scattered fieds, the author proposes the numerica steepest descent path method.
12945 最后，综合讨论了高频驻相点贡献、凯勒锥以及爬行波场 Finally, the author comprehensively addresses the high frequency wave physics, including the high frequency critical point contributions, the Keller's cone, the shadow and reflection boundaries and the creeping wave fields.
12946 针对回击速度的非单调变化，采用回击通道分段的思想，建立了速度非单调变化条件下的回击工程模型，并检验了该模型的有效性与准确性。 Due to the non-monotonic change of the return-stroke velocity(RSV) , the return-stroke engineering model under the condition of non-monotonic speed is established by dividing the return-stroke flash channel into piecewise mear segments in this paper. The validity and accuracy of the model are verified.
12947 基于变速度的回击工程模型，分析了回击速度非单调变化对电场的影响，发现回击速度主要通过影响电场辐射场分量来改变回击电场波形，并导致回击电场出现次峰现象。 Based on the varied speed return-stroke engineering model, the impact of the non-monotonic change of the RSV on the electrc field is analyzed. It is found that the RSV mainly acts on the electrc field waveform by affect ing the radiation field component, and causes the phenomenon of the secondary peak of the electric field.
12948 文中还分析了回击速度的不同变化趋势对电场波形的影响和速度峰值所在高度不同时电场的变化规律。 This paper also analyzes the influence of different speed trends on the electrc field waveform and the variation of the eectric fie d at the height of the ve ocity peak.
12949 结果表明，当速度峰值所对应高度不变的情况下，回击速度增长越快，电场曲线次峰的上升段越陡；速度衰减越慢，次峰之后的凹陷程度越不明显；速度峰值所在高度越低，电场次峰出现越早，表明回击速度的变化对回击波形的精细结构有显著影响。 It is shown that when the height corresponding to the peak of the velocity is constant, the faster the RSV increases, the steeper the rising section of the secondary hump of the electric field is the slower the velocty decays, the less apparent the sunk depth is after the secondary hump. It is indicated that the non-monotonic trend of the RSV has significant influence on the fine structure of electric field.
12950 通过建立变速度的回击工程模型，可加强对电场波形精细结构的理解与认识，从目标或器件尺寸与电磁波长的关系出发，总结了计算电磁学领域的常用理论和数值方法，以及最新的发展趋势。 Establishing the new return-stroke engineerng model is a good way for us to enhance the understanding and knowledge of the fine structure of electrc field. Starting from electrical sizes of objects and devices, commonly adopted theories and numerical methods together with recent advances in research area of computational electromagnetics(CEM) are summarzed.
12951 在分析该领域目前存在问题的基础上，指出了微纳尺度计算电磁学方向的重要性、独特性和对应的挑战。 Then, based on analysis of the existing problems in this area, the importance, peculiarities, and correspondmg challenges of nanoscale CEM are expounded.
12952 最后，给出个人对该方向发展的建议!并粗略综述了国内学者的工作，展望了领域的未来。 Finally, personal suggestions for research directions of the nanoscale CEM are presented. Moreover, the research works done by Chinese researchers are reviewed, and outlook of the CEM area is discussed.
12953 采用有限元一边界积分(finite element boundary integral, FE-BI)方法研究了介质粗糙面上方涂覆目标的复合电磁散射特性，推导了一维介质粗糙面上方二维涂覆目标电磁散射的FE-BI公式。 The composite eectromagnetic scattering characteristics of a coated target above a dieectric rough surface are studied by finite element boundary integral (FE-BI) method in this paper. The FE-BI formulation for the electromagnetic scattering from a twc-dimensional coated target above a one-dimensional dielectric rough surface is derived.