ID 原文 译文
13444 本文将对目标极化散射特征提取的发展概况进行综述,包括基于矩阵分解的目标特征参数提取以及直接提取目标极化散射特征的方法等,并对其中存在的问题进行评论,对未来的发展进行展望。 In this paper, the authors summarize the recent advances of target polarimetric feature extraction, including target decomposition based feature extraction approach and the straight approach to target feature extraction. In addition, the existed problems are commented and the prospect forecast is given.
13445 作为金属的替代品,碳纤维增强复合材料已被越来越广泛地用于飞行器、舰船和导弹等目标的壳体制造,而碳纤维增强复合材料的屏蔽效能对目标体的电磁安全起着重要作用。 Carbon fibre reinforced composite(CFRC) materials have been widely adopted as replacement of metals for the construction of enclosures of platform targets, such as aircraft, ships, missiles, and so on. The shielding properties of CFRC materials play an important role in the electromagnetic safety of platform targets.
13446 采用常规的全波分析方法计算碳纤维增强复合材料的屏蔽效能存在两大难题:复杂的材料属性和薄层带来的电大多尺度问题。 There have been two difficulties in the calculation of shielding effectiveness of CFRC thin layer using the conventional full wave numerical methods: the complicated material properties of CFRC materials and the electrically large multi-scale problem due to the small thickness of CFRC thin layer.
13447 为实现对碳纤维增强复合材料薄层的高效建模,通常采用均匀化的方法来等效具有复杂材料属性的复合材料,采用嵌入式薄层模型技术解决电大多尺度问题。 To overcome these two difficulties, homogeneous methods have been developed to obtain the equivalent homogeneous materials to the composite materials with complicated material properties and the embedded thin layer model techniques have been proposed to solve the electrically large multi-scale problems.
13448 本文将从均匀化方法和嵌入式薄层模型技术两个方面来探讨碳纤维增强复合材料薄层高效建模方法,并概述自主研发的大规模并行全波分析软件JEMS-FDTD及其集成的嵌入式薄层模型技术。 In this paper, the high efficiently modelling techniques of CFRC thin layers will be discussed, from the perspective of homogenous method and embedded thin layer modelling techniques. Furthermore, the embedded thin layer technque integrated into the massGely parallel full wave numercal software, JEMS&FDTD! will be briefly presented.
13449 最后,通过计算实例说明集成了嵌入式薄层模型的JEMS-FDTD软件在对碳纤维增强复合材料进行建模的正确性和高效性。 In the end, the accuracy and high efficiency of JEMS&FDTD with the embedded thin layer modelling technique will be discussed using a numerical example.
13450 并通过模拟仿真壳体为碳纤维增强复合材料飞机的屏蔽效能,说明集成了嵌入式薄层模型的JEMS-FDTD软件的实际应用价值。 Besides, the shielding effectiveness of an aircraft with its skm made of CFRC materals wlll be calculated using JEMS&FDTD with the embedded th in layer technique, which indcates its applicabllity.
13451 随着计算电磁学和计算机技术的迅速发展,电磁散射特性建模技术从算法研究向产品化、集成化、工程化发展。 With the rapid development of computational electromagnetics and computer technology, electromagnetic scattering modeling and simulation technology has shifted from algorithm research to production, integration and engineering.
13452 文中分析了探测、识别、伪装等实际工程应用中对电磁散射特性建模技术的具体需求,总结了几何建模、网格剖分、电磁计算和模型验证等建模流程中存在的关键问题与解决方式,以及电磁散射建模技术的发展特点。 This paper analyzes the engineering requirements for electromagnetic modeling and simulation technology, summarizes the key problems and solutions in electromagnetic modeling and simulation process such as geometric modeling, mesh generation, electromagnetic computation and model validation, and summarizes the characteristics of electromagnetic modeling and simulation technology.
13453 经过图像定标后的雷达图像及其像素值具有雷达散射截面(radar cross section, RCS)的量纲,但是对于该像素值是否能代表目标实际RCS电平一直存在不同的理解。 The pixel values of a calibrated radar image are quantified in terms of the same unit of radar cross section(RCS). However, it has long been an argument that should the pixel value be considered to represent the practical RCS level of a target or not.