信息战条件下敌我识别技术研究

敌我识别是高技术条件下现代战场中自动目标识别技术的重要应用之一.高科技条件下现代战场中的敌我目标识别问题,一直是国际雷达领域和信息处理技术的主攻方向.系统地介绍了敌我识别系统的工作原理,分析了敌我识别系统的工作模式,给出了基于贝叶斯原理的目标综合识别方法,并将贝叶斯目标属性识别算法应用于敌我目标综合识别系统中,实现了信息战条件下对敌我目标的属性判别.     

雷达目标识别开放系统结构与应用

由于以往的雷达目标识别系统主要技术不够成熟,采用专用软硬件结构来实现特定的识别任务。当前,商用流行技术和开放系统为大量系统的设计带来了明显的改善。雷达目标识别技术与雷达技术一样,将经历从专用的软硬件向开放式商用技术的过渡。文中在讨论开放系统的基本特征后,阐述了雷达目标识别开放系统所应具备的层式结构,该结构能够有效聚合不同种类的算法,以适应雷达目标识别系统试验设计的特点。通过与过去的识别系统进行比较,说明开放结构为雷达目标识别系统的设计实现带来了诸多益处。     

现代战争目标识别方法研究

本介绍了国外目标识别的现状及发展趋势，提出了现代战争应采用综合识别系统解决目标识别问题的建议。最后举例说明Bayes目标属性识别算法在综合识别系统中的具体应用。     

信息战条件下敌我目标综合识别方法研究

介绍了国外敌我目标识别的现状及发展趋势,提出了信息战条件下应采用综合识别系统解决目标敌我识别问题的建议。最后举例说明Bayes目标属性识别算法在综合识别系统中的具体应用。     

高分辨雷达目标识别系统技术研究

高分辨雷达可以获得目标更多的散射信息,为目标识别提供了可能.本文在对高分辨目标识别系统研究的基础上,介绍了系统设计和试验研究,包括识别算法、应用研究技术,通过验证试验,证明该系统可以实时在线完成对空中目标的识别分类.     

基于攻击路径图的网络攻击意图识别技术研究

针对目前网络攻击分析和威胁评估都是建立在静态的网络环境和攻击行为之上的问题,设计了网络攻击意图动态识别系统。研究了基于最小顶点割的攻击意图阻止算法和基于时间自动机的攻击意图动态识别算法,搭建了网络攻击意图动态识别系统的框架并完成了该系统的设计。最后搭建了临时实验网络平台进行实验,实验结果表明,网络攻击意图动态识别系统在测试环境下是正确有效的。     

地面三维目标的探测识别系统研究

针对人员、车辆等地面目标运动时产生的地震动信号,利用地震动传感器采集这些信号并作预处理,再通过模糊识别算法对目标特征进行分类识别,进而构建了一个地面三维目标的探测识别系统.     

基于小生境遗传算法的激光切割快速模板匹配

为了解决激光切割视觉识别系统对大幅面多目标图像识别实时性差、对带有偏角的目标识别率低甚至出现无法识别等问题，采用小生境遗传算法，对大幅面多目标匹配识别算法进行了理论分析和实验验证。结果表明, 无论目标有无旋转，该算法都能达到100%识别，算法运算时间比传统算法快5倍~10倍。该算法在识别带有旋转角度的多目标时，具有很好的实用性。     

机载雷达和红外数据融合的智能目标识别

为了提高机载传感器目标识别系统的性能,提出了利用机载雷达和红外成像传感器数据融合的智能目标识别算法.对红外成像传感器,采用了基于小波矩特征和BP神经网络的目标识别算法,首先提取目标图像的小波矩特征并进行特征选择,然后通过BP神经网络对目标图像进行识别;对雷达传感器,提出了利用模糊推理的目标识别方法,首先选取适当的雷达特征,然后通过模糊推理进行识别:从雷达和红外传感器识别算法分别得到待识别目标所属类别的基本概率分配函数,用D-S证据组合规则将两个基本概率分配函数组合,最终实现了机载雷达和红外传感器的数据融合.仿真结果表明:融合后的识别效果优于单个雷达或红外传感器的识别效果.     

基于目标检测与模糊匹配的非标船牌识别研究

基于卷积神经网络的YOLOv3(You Only Look Once v3)目标检测算法设计了一种基于目标检测及模糊匹配机制的非标船牌识别软件系统,并通过在船舶视频监控系统中的实际应用,验证了该船牌识别系统的可行性,提高了船舶铭牌识别的可靠性。YOLOv3目标检测算法将检测简化为一个回归问题,通过仅仅一个网络,就能从图像中得到物体的类别与概率,确保了识别的准确性与实时性。针对船舶非标铭牌锈蚀、遮挡等问题,创新点是在基于YOLOv3的非标船牌识别系统的实现框架之上,设计船名有限中文库与模糊匹配机制,有效解决了船牌识别准确率过低的问题,取得了较好的识别效果。     

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.