空中侦察平台试飞数据的一种新型分析处理方法

提出了一种基于地理信息系统(GIS)的侦察平台数据处理方法,并在VC++6.0平台上开发实现。该方法可对多个侦察平台、不同传感器的测向数据进行综合快速处理,并以图形化的方式在电子地图中展现原始试验场景和处理结果。该方法在某型号侦察飞机的试飞试验中得到了成功应用,表明了其实用性和有效性。     

基于MapX的通信电缆信息管理系统研究

地理信息系统（GIS）技术在国内应用广泛,尤其在资源及设施的管理和规划中发挥着越来越重要的作用。企业通信业务不断发展开拓,传统的通信电缆信息管理模式亟待改变。根据电缆的地理分布属性非常适合地理信息系统的空间数据管理这一特点,利用MapInfo构建区域电子地图,通过Geoset Manager生成Geoset格式文件,利用Delphi开发语言对MapX组件集成研究,并结合SQL Sever数据库,实现了通信电缆系统有效管理。     

GIS在森林管护经营系统中的具体应用

介绍了3S技术在森林资源管护经营地理信息系统中的应用情况、对森林资源管护经营地理信息系统中各功能实现的基本原理进行阐述。系统可以实现森林资源管护经营信息的数据共享，电子地图与属性数据的同步更新，从而避免了传统管理方法中存在的一些问题，使得森林资源管护经营信息管理更加符合现代化发展的需要。     

电子地图产业标准待出 发改委欲造百亿市场

2005年9月11日消息，目前电子地图在商业应用领域不断发展。所谓电子地图就是利用成熟的网络技术、通信技术、GIS（地理信息系统）技术，实现一种新的地图服务方式。     

基于大数据分析的电子地图数据驱动系统设计

为了提高电子地图数据的响应和调度效率,设计电子地图数据驱动系统。针对当前的半主动标签驱动模型进行电子地图数据驱动设计对大数据信息处理的实时性不好的问题,提出一种基于大数据分析与信息融合的电子地图数据驱动系统模型设计方案。在驱动系统的串口操作界面通过多线程技术读取和写入电子地图数据,选用CC2530作为驱动系统的主控芯片,使用开源版本的Qt建立驱动系统的开发编译环境,在增强型的X86总线中进行大数据融合处理,实现电子地图数据驱动系统优化设计。实验结果表明,采用该系统进行电子地图数据驱动与信息调度的实时性较高,数据的召回率高于传统模型。     

一种基于AJAX的电子地图平滑移动算法的实现

针对电子地图交互操作过程中的响应速度问题,从地图小图像拼接的角度出发,提出一种基于AJAX技术的电子地图平滑移动算法.当对电子地图进行平移操作时,地图小图像能够迅速、平滑地拼接成为一幅完整的地图图像并显示在客户端页面上.在此基础上进一步给出相应的地图初始化和缩放操作的实现方法.试验结果表明,运用此方法可以迅速创建电子地图,流畅地对电子地图进行平移和缩放操作,有效地减少用户操作间歇的等待时间,提高用户的工作效率.     

校园三维虚拟电子地图制作关键技术研究

新科技时代的到来,使得GIS产业迅猛发展。三维电子地图的问世,给人们的生活带来了极大便利,但在相关技术方面仍然值得深入研究,文章通过分析校园三维虚拟电子地图的功能性需求,并结合校园三维虚拟电子地图系统的用例图,对校园三维虚拟电子地图系统的设计开发及关键技术进行研究。     

MapInfo在基于GPS／GIS的车辆监控系统中的应用

随着GPS（全球定位系统）和GIS（地理信息系统）技术的不断发展，如何在电子地图上实时的显示车辆的位置，是目前ITS（智能交通系统）中的一个研究分支。对MapInfo标准桌面系统进行了介绍，并着重介绍了如何利用MapInfo实时显示车辆位置。     

小灵通基站地理信息系统的设计与应用

小灵通基站地理信息系统是在Maplnfo平台支持下,应用MapBasic和VB开发语言,通过访问远程Oracle数据库,对数据进行分析处理,使告警基站、异常基站数据在电子地图上可视化,并提供了小灵通基站的规划信息,包括网关信息、寻呼区信息、局向信息和基站信息,同时系统还提供了目前网络的话务、覆盖、容量、干扰四类专题地图功能,从而为基站规划、告警处理、网络优化、专题分析提供了实时性地理化信息。     

基于JavaScript实现离线电子地图

本设计借助Visual Studio 2010 平台, 使用HTML（Hypertext Markup Language） 语言和JavaScript（JS）语言,利用Div＋CSS 的布局技术与JS 响应DOM（Document Object Model）事件技术,以网页的形式实现了离线电子地图的设计,为未来的电子地图开发打下坚实的基础.本文通过对数字地图的构成方法与原理分析、数字地图的实现方法以及电子地图软件的调试与结果几个方面的叙述,描述了整个电子地图的具体情况,并且对电子地图的发展提出了几点看法.     

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.     

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.     

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.     

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