基于OpenGL的电子战综合显控系统设计

传统电子战综合显控系统中存在诸多问题,如目标显示能力差,负载不均衡,难以跨平台移植等。基于Open-GL的综合显控系统可以解决这些问题。介绍了OpenGL技术,提供了在MFC框架下的基于OpenGL的综合显控系统解决方案。     

水下作业观测系统布局可视化仿真软件的研究

利用基于Windows平台的全参数化特征造型软件SolidWorks绘制水下作业平台及水下实况观测设备、水下观测目标的三维立体模型,利用Deep Exploration专业图形格式转换软件将3D模型转换成Open GL库函数可读取的数据列表格式,在OpenGL图形开发环境中进行了3D模型材质颜色设计、水下观测设备视场设计和3D场景的光照、漫游、缩放、旋转等功能设计,并在基于VC++2010的MFC软件开发平台下构建软件程序框架,设计出一套水下作业观测记录系统布局人机交互的可视化仿真软件,软件实现了布局场景显示及视角变换、设备布局调整及视场覆盖效果显示、观测目标显示及位置调整、观测设备布局效果图及安装布局参数保存等功能。     

基于SSH框架的NC数据可视化验证系统研究

为了增强用户对WRF气象模式数据的直观性认识,设计一种基于SSH框架的NC数据可视化系统。该系统允许用户和数据之间进行交互读取,使用颜色映射函数将具体数据值映射成直观的颜色,结合WebGL绘图技术实现气象数据的形象显示,同时设计以时间、高度为变量的动画展示。利用NCL编码语言,对NC数据进行二次可视化,将两次可视化结果进行对比,完成系统验证。实验结果表明,该系统的可行性可极大地提高气象工作人员对NC数据动态变化的直观把握,有利于其做出相关决策。     

视景仿真技术应用研究

概述视景仿真系统的软件系统和硬件系统基本组成,分析研究了软件系统中的一些关键技术问题,包括利用MFC实现分布式仿真、创建基于MFC的Vega SDI仿真程序、OpenGL回调函数、纹理映射建模等．提出了视景仿真的建模流程．采用了Vega渲染环境,用于实时视觉模拟的定义和场景的描述,选用编程工具Visual C ,进行视景仿真的调试．扩展了视景仿真技术在军事研究领域的应用,将对提高未来武器装备的性能和研制效率产生一定的影响．     

SPM数据可视化技术研究

介绍了一套基于数字图像处理技术和OpenGL技术的数据可视化方案。该方案可以用于各种类型的SPM仪器的二维和三维成像处理。针对SPM应用首次提出了“高度剔除”去噪算法以及“水平线最小二乘调整”高度再调整算法,实验表明,这些算法对于增强高度数据成像对比度以及降低从高度数据到图像映射造成的细节损失可以起到有效的作用。详细地讨论了三维成像中的关键问题———顶点颜色的计算,并通过OpenGL的纹理映射技术获得了逼真的三维形貌图。另外,该套可视化方案数据流明确,可视化效果好,可以为其它类型的数据可视化提供有益的参考。     

基于OpenGL的地球/地图三维模拟软件设计

OpenGL作为现今开放的三维动画显示设计环境，以其高效快速，稳定可靠性在三维仿真领域得到广泛应用。而地球及地图视图的三维模拟又是现今游戏动画设计及GIS系统中重要的组成部分，本文便针对地球运动、地图显示及空对地波束指向位置及范围，用VC／MFC的文档/视类结构。C＋＋类的面向对象技术，以OpenGL作为图形开发平台，设计了广泛通用的动画演示软件，为游戏及GIS系统设计人员提供了一定参考及指导意义。     

基于OpenGL的全景导游系统设计

针对一种基于OpenGL的飞行器全景导游系统的设计,对系统的总体框架设计和具体操作流程进行了简要介绍。对系统实现的各个具体模块中解决主要问题的方法原理进行了分析,包括坐标系定义方式、小地图制作方法、飞行器模型的制作导入方法、用户交互操作原理、飞行器轨迹显示与姿态更新原理及相机指向区域标记原理等。提出了各模块的具体实现方法和系统的编码实现步骤,并总结了系统的应用范围和优势。     

基于MFC的航海视景系统实时碰撞检测技术

针对在航海视景帧流速较大、计算量增加时,会使虚拟场景中人机交互响应时间长,导致航海视景系统实时碰撞检测技术耗时长、准确率低的问题,设计一种基于MFC的航海视景系统实时碰撞检测技术.引入Sobel边缘算子精准提取发生畸变的边缘像素,得到单像素级别的图像边缘,建立基于MFC的航海视景系统框架,通过纹理映射消减航海视景复杂度...     

基于多模态特征转换嵌入的场景图生成

场景图生成是计算机视觉领域中的热点研究方向，可连接上、下游视觉任务。场景图由形式为<主语-谓语-宾语>的三元组组成，模型需要对整幅图像的全局视觉信息进行编码，从而辅助场景理解。但目前模型在处理一对多、多对一和对称性等特殊的视觉关系时仍存在问题。基于知识图谱与场景图的相似性，我们将知识图谱中的转换嵌入模型迁移至场景图生成领域。为了更好地对此类视觉关系进行编码，本文提出了一种基于多模态特征转换嵌入的场景图生成框架，可对提取的视觉和语言等多模态特征进行重映射，最后使用重映射的特征进行谓语类别预测，从而在不明显增加模型复杂度的前提下构建更好的关系表示。该框架囊括并补充了现存的几乎所有转换嵌入模型的场景图实现，将四种转换嵌入模型（TransE、TransH、TransR、TransD）分别应用于场景图生成任务，同时详细阐述了不同的视觉关系类型适用的模型种类。本文所提框架扩展了传统应用方式，除独立模型之外，本文设计了新的应用方式，即作为即插即用的子模块插入到其他网络模型。本文利用大规模语义理解的视觉基因组数据集进行实验，实验结果充分验证了所提框架的有效性，同时，得到的更丰富的类别预测结...     

基于OpenGL的空间目标监视雷达三维显示系统

空间目标监视雷达探测范围较远,目标高度较高,所以需要三维显示软件来反映目标实际的空间位置信息。基于OpenGL提出了一种雷达三维显示系统的设计框架和模块划分。针对空间目标的辅助显示需求,提出了雷达波束和搜索屏的显示设计,可以实时反映雷达的波束调度情况;提出了一种基于四叉树动态分形的地球纹理管理方法,用于实现高精度的地表纹理显示;提出了一种基于虚拟轨迹球的三维地球旋转设计,实现了灵活的用户视角调整。该系统已在某型空间目标监视雷达上成功应用,画面显示平滑流畅。     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system.     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Development of the readout system for waveguide multilayer optical card

Waveguide multilayer optical card （WMOC） is a novel storage device of three-dimensional optical information. An advanced readout system fitting for the WMOC is introduced in this paper. The hardware mainly consists of the light source for reading, WMOC, motorized stages addressing unit, microscope imaging unit, CCD detecting unit and PC controlling ＆ processing unit. The movement of the precision motorized stage is controlled by the computer through Visual Basic （VB） language in software. A control panel is also designed to get the layer address and the page address through which the position of the motorized stages can be changed. The WMOC readout system is easy to manage and the readout result is directly displayed on computer monitor.     

Study of waveguide coupling efficiency in hybrid silicon lasers

This paper presents a new method to increase the waveguide coupling efficiency in hybrid silicon lasers. We find that the propagation constant of the InGaAsP emitting layer can be equal to that of the Si resonant layer through improving the design size of the InP waveguide. The coupling power achieves 42% of the total power in the hybrid lasers when the thickness of the bonding layer is 100 nm. Our result is very close to 50% of the total power reported by Intel when the thickness of the thin bonding layer is less than 5 nm. Therefore, our invariable coupling power technique is simpler than Intel＇s.     

Collinear phase-matching study of terahertz-wave generation via difference frequency mixed in GaAs and Inp

The collinearly phase-matching condition of terahertz-wave generation via difference frequency mixed in GaAs and InP is theoretically studied. In collinear phase-matching, the optimum phase-matching wave hands of these two crystals are calculated. The optimum phase-matching wave bands in GaAs and lnP are 0.95-1.38μm and 0.7-0.96μm respectively. The influence of the wavelength choice of the pump wave on the coherent length in THz-wave tuning is also discussed. The influence of the temperature alteration on the phase-matching and the temperature tuning properties in GaAs crystal are calculated and analyzed. It can serve for the following experiments as a theoretical evidence and a reference as well.     

Effects of the alloy compositions on the phonon-polaritons in ternary mixed crystals

Composition dependence of bulk and surface phonon-polaritons in ternary mixed crystals are studied in the framework of the modified random-element-isodisplacement model and the Bom-Huang approximation. The numerical results for Several Ⅱ - Ⅵ and Ⅲ- Ⅴ compound systems are performed, and the polariton frequencies as functions of the compositions for ternary mixed crystals AlxGa1-xAs, GaPxAS1-x, ZnSxSe1-x, GaAsxSb1-x, GaxIn1-xP, and ZnxCd1-xS as examples are given and discussed. The results show that the dependence of the energies of two branches of bulk phonon-polaritons which have phonon-like characteristics, and surface phonon-polaritons on the compositions of ternary mixed crystals are nonlinear and different from those of the corresponding binary systems.     

New insert layer structure OLEDs

An insert layer structure organic electroluminescent device（OLED） based on a new luminescent material （Zn（salen）） is fabricated. The configuration of the device is ITO/CuPc/NPD/Zn（salen）/Liq/LiF/A1/CuPc/NPD/Zn（salen）/Liq/LiF/A1. Effective insert electrode layers comprising LiF（1nm）/Al（5 nm） are used as a single semitransparent mirror, and bilayer cathode LiF（1 nm）/A1（100 nm） is used as a reflecting mirror. The two mirrors form a Fabry-Perot microcavity and two emissive units. The maximum brightness and luminous efficiency reach 674 cd/m^2 and 2.652 cd/A, respectively, which are 2.1 and 3.7 times higher than the conventional device, respectively. The superior brightness and luminous efficiency over conventional single-unit devices are attributed to microcavity effect.