基于XMSF 的预警探测仿真系统

针对高层体系结构(HLA)在不同厂商运行支撑环境(RTI)之间交互问题,以及下一代分布式仿真标准可扩展建模与仿真架构(XMSF),提出了一种基于XMSF的预警探测仿真系统。首先,介绍了XMSF 及其对HLA 的扩展;然后,分析了预警探测仿真系统的功能需求,并设计了该系统的功能框架图;最后,分析了仿真模型、基于数据分发服务(DDS)的运行框架、桥接代理、基于Web 服务的扩展等关键技术。     

基于HLA的单脉冲雷达导引头建模与仿真

根据单脉冲雷达导引头的特点以及高层体系结构(HLA)的原理,结合对导弹攻防仿真系统应用需要,设计并实现了基于HLA的单脉冲雷达导引头功能级仿真系统.分析该仿真系统的数学模型及其在HLA仿真框架中的具体实现,并建立仿真系统中单脉冲导引头成员和目标成员的运行逻辑和实体模型.     

HLA在半实物仿真系统中的应用研究

半实物仿真是分布式仿真领域的一个关键组成部分,它最鲜明的特点就是要求具有实时性。然而HLA虽然在顶层设计时预留了仿真接口,但目前的HLA系统在实时仿真的成效却达不到半实物仿真的需求,因此提高HLA系统的实时性是分布式仿真系统需要解决的一个关键技术。首先,介绍了HLA定义、对象模型模板、运行支撑系统接口RTI,阐述了HLA互操作性和重用性应用于半实物仿真系统中的重要作用;然后,提出了HLA应用于半实物仿真系统内部和半实物仿真与其它仿真互联系统时,从不同层面提高仿真系统实时性的方式;最后,给出了使用HLA工具对某半实物仿真系统进行搭建的方法。     

某型飞机机载武器管理仿真系统

针对某型飞机机载武器管理系统(SMS)的训练需要,将建模与仿真技术引入武器管理系统的研究,提出了基于HLA(High Level Architecture)的武器管理仿真系统,开发相应模拟器;利用HLA的互操作性与重用性特点,结合该机武器管理仿真系统的设计要求,根据仿真应用系统的开发过程,给出了该系统总体设计方案和设计要求;依据HLA/RTI规范,设计开发了仿真联邦的联邦对象模型和仿真对象模型,列出了具体的对象类和交互类以及公布和订购关系,给出了系统的仿真主流程图。     

基于HLA的成像雷达对抗仿真系统设计与实现

为了缩短成像雷达对抗系统的研发周期,减少开发成本,降低项目风险,建立成像雷达对抗仿真系统是良好的途径.采用基于高层次体系结构(HLA)的雷达对抗仿真系统,可为系统提供仿真的测试信号环境和性能评估手段.     

基于HLA的卫星通信仿真技术研究

基于HLA的基本概念和逻辑结构,构建了HLA平台下的卫星通信仿真架构,并描述了卫星通信系统中联邦的成员框架和运行流程设计,以及卫星通信的建模设计,基于此设计框架的仿真系统能够对卫星通信链路进行动态仿真,有效模拟出真实的系统运行环境。     

一种基于HLA的仿真控制整体架构设计

针对无法动态地与运行中的OPNET进行交互,实时控制其模型中的属性参数这一问题,提出了一种基于HLA的仿真控制整体架构设计方法,描述了仿真控制准备、仿真控制主体和控制状态呈现等组成部分的设计方法。可以与OPNET仿真工程进行实时互动,控制该仿真工程的运行状态,并且能够自动地获取任一OPENT仿真工程中的模型属性参数,在运行中动态地控制其内部相关的属性参数,实现人在回路的功能。     

基于HLA的仿真程序设计研究

在分布式交互仿真中,高层体系结构HLA以其灵活性、开放性和突出的互操作和重用性成为当今的分布式交互仿真的标准IEEE1516。研究基于HLA的程序设计方法对于开发分布式交互仿真系统具有重要意义。本文从HLA的对象模型模板(OMT)和接口规范实现的运行支撑环境(RTI)所提供的6种服务入手,结合相应设计实例,给出了设计的步骤和一般方法。     

基于HLA的仿真雷达对抗系统的设计与实现

未来战争对武器系统的要求越来越高,相应地给仿真和建模技术带来很大的困难。本文针对这一问题,提出了一种基于高层体系结构（HLA）[1]和VC++6．0[2－3]开发工具的仿真雷达对抗系统的设计方法,并搭建了实验平台,对所开发的雷达对抗原型系统进行功能和性能测试。测试结果表明,该系统能满足模型的延迟性、互操作性、重用性[4－5]和扩展性等方面的要求,具有一定的应用价值和现实意义。     

基于HLA潜艇作战系统训练模拟器的时间管理研究

时间管理服务是高层体系结构（HLA）接口规范中所描述的六大服务之一,运行支撑系统（RTI）是HLA服务接口规范的具体实现,时间管理服务就是通过RTI,按照HLA接口规范管理各类消息的发送和接收,并协调联邦中各个联邦成员的时间推进,以保证仿真系统逻辑的正确性。结合一个具体仿真系统,从基于HLA仿真运用的角度分析了时间管理机制,可为开发类似的分布式仿真系统人员提供参考。     

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.     

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.     

Teleportation of an arbitrary unknown N-qubit entangled state under the controlling of M controllers

A new quantum protocol to teleport an arbitrary unknown N-qubit entangled state from a sender to a fixed receiver under M controllers(M < N) is proposed. The quantum resources required are M non-maximally entangled Greenberger-Home-Zeilinger (GHZ) state and N-M non-maximally entangled Einstein-Podolsky-Rosen (EPR) pairs. The sender performs N generalized Bell-state measurements on the 2N particles. Controllers take M single-particle measurement along x-axis, and the receiver needs to introduce one auxiliary two-level particle to extract quantum information probabilistically with the fidelity unit if controllers cooperate with it.     

Diode-end-pumped Nd:YVO4/LBO lasers with 4.2W continuous-wave output at 457 nm

A continuous-wave (CW) 457 nm blue laser operating at the power of 4.2 W is demonstrated by using a fiber coupled laser diode module pumped Nd: YVO4 and using LBO as the intra-cavity SHG crystal With the optimization of laser cavity and crystal parameters, the laser operates at a very high efficiency. When the pumping power is about 31 W, the output at 457nm reaches 4.2 W, and the optical to optical conversion efficiency is about 13.5% accordingly. The stability of the out putpower is better than 1.2% for 8 h continuously working.     

A rigorous proof of MIMO channel capacity’s increase with antenna number

It is well known that adding more antennas at the transmitter or at the receiver may offer larger channel capacity in the multiple-input multiple-output（MIMO） communication systems. In this letter, a simple proof is presented for the fact that the channel capacity increases with an increase in the number of receiving antennas. The proof is based on the famous capacity formula of Foschini and Gans with matrix theory.     

Call for Papers

正Wireless Body-area Networks The last decade has witnessed the convergence of three giant worlds:electronics,computer science and telecommunications.The next decade should follow this convergence in most of our activities with the generalization of sensor networks.In particular with the progress in medicine,people live longer and the aging of population will push the development of wireless personal networks