摘要：With the deep research of knowledge engineering and the widespread applications of CAD technology, the joining of knowledge engineering with CAD is the focus of advanced manufacturing. An intelligent approach is presented for configurating the typical structural components of radar. Case based reasoning, rule based reasoning, geometric, constraint solving and domain ontology are merged into a compound knowledge model. The main frame and workflow of radar typical structural component design system are illustrated. Experiments show this approach is efficient and effective.

摘要：This study is a preparation phase for visualization of utilized information using ergonomic user interface and standardization of elements for anti-air radar screen. Therefore, we investigated the instances of anti-air radar screen for air defense weapon system for defense advanced country. Based on the collected data, we compared and analyzed the air defense weapon system radar screen design. In addition, we carry out a research for layout, configuration, standardization and design of the radar screen’s elements. Ultimately, it is essential to share a variety of battle field conditions such as enemy threat, enemy/friendly information, terrain information that can be effectively recognized. In this paper, we conduct case study for ergonomically development of automated/standardized radar screen. It is expected that this research improves the situational awareness and reduces the user’s task load.

摘要：This paper reviews recent advances in radar sensor design for low-power healthcare,indoor real-time positioning and other applications of *** radar front-end architectures and digital processing methods are proposed to improve the detection performance including detection accuracy,detection range and power *** many of the reported designs were prototypes for concept verification,several integrated radar systems have been demonstrated with reliable measured results with demo systems.A performance comparison of latest radar chip designs has been provided to show their features of different *** great development of IoT,short-range low-power radar sensors for healthcare and indoor positioning applications will attract more and more research interests in the near future.

摘要：俯冲前斜SAR(Synthetic Aperture radar,SAR)具有各方向分辨特性非均匀的特点,传统的合成孔径雷达分辨率描述方法具有一定的局限性,不适用于俯冲前斜SAR的分辨率分析.为了完备地描述前斜SAR系统的分辨率特性,提出了一种基于分辨椭圆的前斜SAR分辨率分析方法,采用广义模糊函数推导了前斜SAR斜平面和地平面分辨椭圆的表达式.仿真结果表明:该方法可以适应SAR系统不同的几何构型和系统参数条件,为前斜SAR系统的参数设计和几何构型配置提供了理论依据.

摘要：在杂志设计的世界中．LUke Hayman算得上是一颗超级巨星。生于赫默尔亨普斯特德（Hemel Hempstead）的Hayman于1992年进入伦敦中央圣马丁艺术学院学习平面设计。在那里他凭借自己的作品及不在一个工作上呆超过两年时间的坚持逐渐确立了自己的声望。Hayman曾帮助无数知名刊物包括i．D．杂志、《纽约》杂志、《时代》杂志和radar杂志完成了设计或改版。2006年12月．在夺得几个大奖后．Hayman加入了在世界各地都有分公司的多元设计公司Pentagram的纽约公司做合伙人。

摘要：In this paper, the design of a 9.1 GHz Low Noise Amplifier (LNA) of a radar receiver that is used in the Navy is presented. For the design of the LNA, we used GaAs Field-Effect Transistors (FETs) from Agilent ADS component library. In order to keep the cost of the circuit in low prices and the performance high, we design a two-stage LNA.

摘要：面对日益激烈的市场竞争 ,企业制胜的法宝是快速响应市场生产出具有最优TQCS指标的创新产品。对产品创新的源头———用户需求信息的获取、分析与处理进行了简单描述 ,提出了逐层映射的需求模型 ,并介绍了Web支持的基于知识的产品需求敏捷获取与处理系统 (radar)

摘要：通过对不同衬砌类型下的衬砌密实性、拱架的特征波形做进一步地梳理和深入探讨,分析不同衬砌工况下空洞、拱架对应的主要判定特征;对衬砌结构划分类别,并对衬砌密实性、拱架的判定特征在不同衬砌工况下多条隧道雷达波形差异性进行分析和对比,总结出不同衬砌工况下的共性。在隧道二次衬砌内无钢筋布设时,空洞和拱架之间存在影响,但可以判定;在隧道二次衬砌内存在钢筋布设时,钢筋对背后的脱空和拱架具有屏蔽作用,影响雷达图像的判释。

摘要：在雷达散射截面(RCS)测试中,低散射载体的设计结果取决于被测目标的RCS量级;为进行细节性隐身设计,获得台阶与缝隙排除载体干扰后的RCS水平,提出一种在台阶与缝隙RCS测试中的低散射载体设计方法;采用多层快速多极子算法,对低散射载体相邻曲面连接方式、台阶与缝隙在载体上的位置、前缘尖削度、倒圆半径对散射特性的影响进行仿真分析;仿真计算结果表明,控制载体表面曲率的变化、加大前缘尖削度、减小拼接曲面倒圆半径能有效降低载体前向散射水平,由于载体曲面一侧的散射水平低于平面一侧散射水平,台阶与缝隙特征应位于曲面上;对RCS测试中低散射载体设计具有指导意义。

摘要：雷达采用低截获概率(LPI)技术之后,特别是在低信噪比条件下,传统的雷达信号识别方法将暴露出对弱信号无能为力、识别率低等缺陷。针对这些问题,设计了基于匹配模板的雷达信号快速识别系统,介绍了系统设计的基本思路,提出了敏感参数这一概念,保证了正确识别率。以线性调频信号为例制定了相应的匹配识别准则,通过仿真实验验证了该准则的有效性和该系统的可行性。在信号受到噪声污染的情况下,该系统对线性调频信号的识别信噪比可以达到-6dB。