基于Zinc的雷达显控软件系统设计

提出了将VxWorks操作系统及其图形用户接口工具Zinc引入到雷达显控终端软件设计中的必要性,通过实例介绍了Zinc的界面设计流程,给出了某雷达显控终端软件的设计架构,着重分析了Zinc在终端软件设计中几个关键的实现技术,具有很强的实用性。     

老人服务机器人机械臂控制系统架构设计方法

<正>为老人提供各种服务的机器人成为一种迫切的社会需求。为提升老人服务机器人控制系统性能,对软件及硬件架构进行深层次分析,提出了一种包含三层控制系统架构的设计方法,在现有机器人操作系统ROS的基础上,向上拓展应用技术开发,向下延伸底层硬件驱动技术。将该方法应用在一种新型老人服务机器人上,对老人服务机器人的机械臂系统开展运动学分析,验证了该方法的有效性,实现了室内物体抓取,可通用于一般的服务机器人。     

基于Cortex-A8和FPGA的嵌入系统在雷达信号处理中的应用

本文总结以往雷达信号处理经验,提出了新的利用Cortex-A8和FPGA共同实现雷达信号数据处理的方案。主要介绍了基于TI公司Cortex-A8平台系统及FPGA的相关硬件,给出了具体的硬件设计方法,并对设计原理进行了阐述和分析。同时对基于VxWorks的实时多任务操作系统的特性和优势进行了简要分析;完成了雷达系统中数字通信的管理和控制,实现雷达系统中数字信号的处理。     

分布式天波超视距雷达体制研究

论述了天波超视距雷达及多输入多输出体制近年来的发展和研究状况.同时,从分布式天波超视距雷达所面临的任务需求和技术体制等方面展开分析,给出了雷达系统架构以及2种配置方式,并就其资源配置和信息融合进行了设计.最后,根据技术难点和成熟度提出了分布式天波超视距雷达"三步走"的技术发展路线及相应的阶段目标,对其中的关键技术还进行了评述.     

嵌入式雷达终端人机界面的设计

人机界面设计是雷达终端软件的重要组成部分。现代雷达终端是集数据处理、显示控制、数据上报和系统监测等功能于一体的嵌入式雷达设备,必须具备多功能、强实时性、占用资源少、易操作、可维护等特点。VxW orks操作系统由于它的可靠性、强实时性等卓越性能成为雷达终端的首选操作系统,但其对图形的处理能力较弱。给出了适用于通用高端显卡基于VxW orks操作系统的嵌入式雷达终端人机界面设计的实现方法。     

软件化雷达技术发展思考与展望

针对现代雷达技术发展速度加快和愈趋复杂的特点,本文首先指出目前雷达技术在装备研发效率和更新换代速度两方面面临的挑战,并对国内外的发展进行了综述,指出软件化雷达是应对这些挑战的有力手段。然后,给出了软件化雷达体系架构的定义,并提出了包括物理层、中间件层、组件层、应用层的四层体系架构模型。在此基础上,结合开放式系统的概念,分析了软件化雷达组件化设计方法的特点:抽象化、组件化、可重用、可定制、自包容、互操作、松耦合。基于这些特点,软件化雷达组件化设计方法可以实现雷达系统的快速构建。接下来进一步指出了软件化雷达的技术定位是一种平台性技术,会为雷达装备应对各种挑战带来更多可能性。最后,对软件化雷达技术未来的发展方向和需要重视的问题进行了总结。      

雷达与电子战的认知博弈

新技术与新型作战样式的不断涌现,使得雷达与电子战的博弈愈演愈烈。具备能够准确感知环境,并能够根据环境动态调整工作方式的认知能力,成为雷达与电子战系统适应未来强博弈作战环境的必然要求。通过分析认知雷达与认知电子战的发展现状,给出认知雷达与认知电子战的系统架构,进一步阐述认知雷达与认知电子战的博弈过程;在此基础上,对射频一体化认知对抗系统展开研究,提出射频一体化认知对抗系统架构,并对调用策略进行详细设计;最后对体系化认知对抗系统的架构及关键技术进行了展望。     

基于Qt的雷达信息显示设计

提出了一种基于Qt图形化视图框架的雷达信息显示的新方法。Linux操作系统由于具有开源、免费、具有知识产权的特点,在许多领域特别是在军品领域逐步取代Windows操作系统的地位。而Qt由于自身优势,成为Linux操作系统下图形用户界面的主流开发工具。采用基于Qt图形化视图框架的雷达信息显示,使得图形用户界面具有信息显示实时、程序架构简单的优点,而且通过采用Qt Desingner工具、style sheet方式使得图形用户界面设计简单、界面友好。     

Windows CE设备驱动程序开发

基于Windows CE操作系统级设计的一个重要方面是原始设备制造商（OEM）和独立硬件开发商（IHV）可以对设备驱动程序来支持他们的独立于硬件的发展,而不需要微软也开发设备驱动程序。本文介绍了CE WinCE架构的过程和Windows设备驱动程序的开发,并介绍了设备驱动程序,设备驱动程序结构和中断处理。CE Windows操作系统支持4个设备驱动模型：本机设备驱动,流接口设备驱动程序,USB设备驱动,网络驱动程序。     

基于软件无线电的多功能射频综合一体化设计

在研究国内外雷达、电子战、通信综合一体化技术的基础上,分析了雷达、电子战、通信功能特点及综合一体化带来的优势,提出了基于软件无线电的多功能射频综合一体化设计思路,然后阐述了综合一体化系统架构,给出了雷达、电子战、通信综合一体化方案,最后对综合一体化设计技术、超宽带射频技术、系统软件技术和系统资源管理等关键技术进行了重点讨论,为基于软件无线电的雷达、电子战、通信多功能综合射频系统具体设计提供了借鉴。     

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.     

Nanoimprint Lithography -A Next Generation High Volume Lithography Technique

IntroductionNanoimprint Lithography is a well-acknowl-edged low cost, high resolution, large area pattern-ing process. It includes the most promising methods,high-pressure hot embossing lithography (HEL) [2],UV-cured imprinting (UV-NIL) [3] and micro contactprinting (m-CP, MCP) [4]. Curing of the imprintedstructures is either done by subsequent UV-lightexposure in the case of UV-NIL or by cooling downbelow the glass transition temperature of the ther-moplastic material in case of HEL…     

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.     

Influence of PVK ： NPB hole transporting layer on the characteristics of organic light-emitting devices

A doping system consisting of NPB and PVK is employed as a composite hole transporting layer （CHTL）. By adjusting the component ratio of the doping system, a series of devices with different concentration proportion of PVK ： NPB are constracted. The result shows that doping concentration of NPB enhances the competence of hole transporting ability, and modifies the recombination region of charge as well as affects the surface morphology of doped film. Optimum device with a maximum brightness of 7852 cd/m^2 and a power efficiency of 1.75 lm/W has been obtained by choosing a concentration proportion of PVK ： NPB at 1：3.     

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.     

Analysis of error performance on Turbo coded FDPIM

Due to variable symbol length of digital pulse interval modulation（DPIM）, it is difficult to analyze the error performances of Turbo coded DPIM. To solve this problem, a fixed-length digital pulse interval modulation（FDPIM） method is provided. The FDPIM modulation structure is introduced. The packet error rates of uncoded FDPIM are analyzed and compared with that of DPIM. Bit error rates of Turbo coded FDPIM are simulated based on three kinds of analytical models under weak turbulence channel. The results show that packet error rate of uncoded FDPIM is inferior to that of uncoded DPIM. However, FDPIM is easy to be implemented and easy to be combined, with Turbo code for soft-decision because of its fixed length. Besides, the introduction of Turbo code in this modulation can decrease the average power about 10 dBm, which means that it can improve the error performance of the system effectively.     

A method for calculating the center position of collimated light

It is a key problem to accurately calculate beam spots＇ center of measuring the warp by using a collimated laser. A new method, named double geometrical center method （DGCM）, is put forward for the first time. In this method, a plane wave perpendicularly irradiates an aperture stop, and a charge couple device （CCD） is employed to receive the diffraction-beam spots, then the geometrical centers of the fast and the second diffraction-beam spots are calculated respectively, and their mean value is regarded as the center of datum beam. In face of such adverse instances as laser intension distributing defectively, part of the image being saturated, this method can still work well. What＇s more, this method can detect whether an unacceptable error exits in the courses of image receiving, processing and calculating. The experimental results indicate the precision of this method is high.     

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.     

Preparation and Characterization of TaN ALD Precursors

High purity organic-tantalum precursors for thin film ALD TaN were synthesized and characterized.Vapor pressure and thermal stability of these precursors were studied.From the vapor pressure analysis,it was found that TBTEMT has a higher vapor pressure than any other published liquid TaN precursor,including TBTDET,TAITMATA,and IPTDET.Thermal stability of the alkyl groups on the precursors was investigated using a 1H NMR technique.The results indicated that the tertbutylimino group is the most stable group on TBTDET and TBTEMT as compared to the dialkylamido groups.Thermal stability of TaN precursors decreased in the following order:TBTDET ＞ PDMAT ＞ TBTEMT.In conclusion,precursor vapor pressure and thermal stability were tuned by making slight variations in the ligand sphere around the metal center.