基于北斗系统出租车位置服务终端设计研究

本文采用BD/GPS双模式定位技术设计了一种新型出租车位置服务车载终端。该终端不仅具有位置监控和计价器功能,还可利用2G或3G增加无线路由与服务质量评价。预装GIS电子地图,实现本地导航及综合实时显示车辆和人员信息。     

建立动态导航中的电子地图数据结构模型

在基于卫星的导航定位系统中，各类用户终端如何真正实现“动态导航”是广大用户对整个系统先进性体会最直观的表现形式之一。因此，进行统一的动态导航电子地图数据结构设计成为实现“动态导航”的关键技术。本文通过研究动态导航电子地图数据结构模型，提出适合数据差分更新的动态导航电子地图数据结构的技术解决方案，为基于卫星的导航定位系统及终端设计提供必要的技术基础。[第一段]     

GPS／电子地图导航系统研究

车载GPS／电子地图组合导航定位系统,在GPS接收机与微型计算机接口电路的基础上,实现了数据的实时接收,车辆运动轨迹的标绘,地图的漫游和换图等功能。本文给出了设计方案,讨论了系统功能结构和某些关键问题,介绍了系统实验的有情况,为该系统的实际应用提供了有益的依据。     

建立动态导航中的电子地图数据结构模型

本文通过研究动态导航电子地图数据结构模型,提出适合数据差分更新的动态导航电子地图数据结构的技术解决方案,为基于卫星的导航定位系统的终端数据库设计提供必要的技术基础。     

车联网移动无线数据通信系统的设计与实现

为了提高车联网移动无线数据通信能力,实现通过无线数据通信系统对车辆监控与导航,利用RFID和GPS技术,通过对车联网无线数据通信系统的结构分析,设计了车联网移动无线数据通信系统。重点研究了车载终端总体结构、车载终端通信模块、RFID感知通信模块、移动通信平台架构、定位追踪通信模块和远程控制通信模块。应用结果表明,该移动无线数据通信系统有较好显示能力和信息处理能力,能够处理导航、信息服务、车辆信息显示与辅助控制等功能的车载终端信息通信服务的需求。     

移动定位业务讲座 第五讲电子地图

电子地图作为一种新兴的应用技术,己越来越受到人们的重视.它综合应用了地理学、导航、计算机图形学、数据库、地理信息系统（GIS）等技术.电子地图的应用范围很广,在移动定位业务中通过连续接收移动定位终端的位置信息,并实时地将它显示在以电子地图为背景的移动终端屏幕上,可完成对车辆的导航以及对与位置相关的信息的查询.亦可将移动目标的位置信息通过移动通信网络传到远端定位中心,显示在以电子地图为背景的计算机屏幕上,完成对车辆的跟踪、调度、指挥、监控等任务.     

基于嵌入式操作系统VxWorks的车载导航电子地图系统实现

为传统的GPS导航仪配备新型的数字化、可视化的导航电子地图综合显示系统是实现坦克数字化和综合显示控制技术的必要条件，也是未来坦克装甲车辆导航设备的发展方向。本文给出了实现车载导航电子地图综合显示系统的总体方案，针对车载系统和导航电子地图的特点，从软硬件两方面着手，阐述了该系统具体实现的思路和方法。     

面向EVNS的电子地图的设计

分析研究车载导航信息系统电子地图算法,面向EVNS的导航系统中电子地图的建立,以及实现这些功能对电子地图数据库的基本要求及电子地图数据库的建立。以车载导航信息系统的导航电子地图和导航数据库作为重点研究对象．分析导航信息系统中导航电子地图的设计和电子地图的数据组织。     

嵌入式产品在GPS监控系统中的应用

1 GPS监控系统介绍 GPS车辆调度系统的建设,首先要考虑监控覆盖范围、实时性、调度业务、车辆容量、刷新速率等要求来选择合适的无线数据链路和电子地图,以及开发相应业务软件满足用户的要求。就目前GPS车辆调度系统而言,无线数据链路应用较多的为GSM通信方式,这主要由于其覆盖范围广、无需架设基站、可实现语音/短信等功能的优点所决定的。 1.1 车载终端 车载终端设备包括控制单元、显示单元(可选)、GPS、GPS天线、GSM手机(或其他通信模块)和防盗报警器等。主要功能有防盗报警、导航和通话。 1.2 无线数据链路 无线数据传输设备…     

GPS/GPRS车辆监控系统中移动终端的开发

随着全球定位系统的发展，越来越多的民用车辆开始使用GPS定位技术实现定位、监控、导航等功能。介绍了一种GPS／GPRS车辆监控系统。提出在嵌入式平台上实现车载信息处理终端的开发方案，给出了车载信息处理终端的硬件和软件组成，详细介绍了各个硬件和软件模块的功能与实现方法。该方案充分发挥嵌入式平台的优点，实现了终端的高度集成，具有强大的信息处理能力。     

Technology innovation and process integrations for sub-100nm gate patterning

This paper presents a brief overview of the Applied Centura(R)DPS(R)system,configured with silicon etch DPS Ⅱ chamber, with emphasis on discussing tuning capability for CD uniformity control. It also presents the studies of etch process chemistry and film integration impact for an overall successful gate patterning development. Discussions will focus on resolutions to key issues, such as CD uniformity, line-edge roughness, and multilayer film etching integration.     

White organic light-emitting devices based on fac tris（2- phenylpyridine） iridium sensitized 5,6,11,12-tetraphenylnap -hthacene

We have fabricated the white organic light-emitting devices （WOLEDs） based on 4,4＇ -bis（2,2 -diphenyl vinyl）-1,1＇ - biphenyl （DPVBi） and phosphorescence sensitized 5,6,11,12,-tetraphenylnaphthacene （rubrene）. The device structure is ITO/2T-NATA （20 nm）/NPBX （20 nm）/CBP： x%Ir（ppy）3：0.5% rubrene （8 nm）/NPBX （5 nm）/DPVBi （30 nm）/Alq（30 nm）/LiF（0.5 nm）/A1. In the devices, DPVBi acts as a blue light-emitting layer, the rubrene is sensitized by a phosphorescent material, fac tris （2-phenylpyridine） iridium [Ir（ppy）3], acts as a yellow light-emitting layer, and N,N＇ -bis- （1-naphthyl）- N,N＇ -diphenyl -1, 1＇ -biphenyl-4,4＇ -diamine （NPBX） acts as a hole transporting and exciton blocker layer, respectively. When the concentration of Ir （PPY）3 is 6wt%, the maximum luminance is 24960 cd/m^2 at an applied voltage of 15 V, and the maximum luminous efficiency is 5.17 cd/A at an applied voltage of 8 V.     

Complete approach to automatic identification and subpixel center location for ellipse feature

To meet the need of automatic image features extraction with high precision in visual inspection, a complete approach to automatic identification and sub-pixel center location for similar-ellipse feature is proposed. In the method, the feature area is identified automatically based on the edge attribute, and the sub-pixel center location is accomplished with the leastsquare algorithm. It shows that the method is valid, practical, and has high precision by experiment. Meanwhile this method can meet the need of instrumentation of visual inspection because of easy realization and without man-machine interaction.     

小角度扩展相关性近似算法分析

本论文提出一种在多天线MIMO信道相关性建模中小角度扩展近似理论算法,并应用于分析MIMO系统性能。分析中分别对三种不同角能量分布情况下的空间相关性研发快速近似计算法,并同时提出双模(Bi-Modal)角能量分布情况下的近似运算。通过分析这些新方法的近似效率,可以得到计算简单、复杂度低、而且符合实际的MIMO相关信道矩阵,对系统级的快速高效计算法的研究和系统级的评估以及误差分析具有重要的意义。     

Curved crystal spectrometer for the measurement of X-ray lines from laser-produced plasmas

In order to diagnose the laser-produced plasmas, a focusing curved crystal spectrometer has been developed for measuring the X-ray lines radiated from a laser-produced plasmas. The design is based on the fact that the ray emitted from a source located at one focus of an ellipse will converge on the other focus by the reflection of the elliptical surface. The focal length and the eccentricity of the ellipse are 1350 mm and 0.9586, respectively. The spectrometer can be used to measure the X- ray lines in the wavelength range of 0.2-0.37 nm, and a LiF crystal （200） （2d = 0.4027 nm） is used as dispersive element covering Bragg angle from 30° to 67.5°. The spectrometer was tested on Shengnang- Ⅱ which can deliver laser energy of 60-80 J/pulse and the laser wavelength is 0.35 μm. Photographs of spectra including the 1 s2p ^1P1-1s^2 ^1S0 resonance line（w）, the 1s2p ^3P2-1s^2 1S0 magnetic quadrupole line（x）, the 1s2p ^3P1-1 s^2 ^1S0 intercombination lines（y）, the 1 s2p ^3S~1-1 s^2 ^1S0 forbidden line（z） in helium-like Ti Ⅹ Ⅺ and the 1 s2s2p ^2P3/2-1 s622s ^2S1/2 line（q） in lithium-like Ti Ⅹ Ⅹhave been recorded with a X-ray CCD camera. The experimental result shows that the wavelength resolution（λ/△ 2） is above 1000 and the elliptical crystal spectrometer is suitable for X-ray spectroscopy.     

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.     

A Versatile Mixed-Signal Pin Approach for Cost-Effective Test of Automotive ICs

Integrated circuits (ICs) intended for increasingly sophisticated automotive applications bring unique test demands. Advanced ICs for applications such as highly integrated automatic braking system (ABS) and airbag controllers combine high voltage digital channels, significant VI demands and precise timing capability. Along with continued missioncritical reliability concerns, the trend toward higher voltage operation and increased device integration requires specialized test capabilities able to extend across the wide operating ranges found in automotive applications. Among these capabilities, automotive test requirements increasingly dictate a need for a cost-effective versatile mixed-signal pin electronics with very high data rates reaching up to 50MHz with a voltage swing of-2 V to +28 V.     

Electronic Structure of Semiconductor Nanocrystals

This paper reviews our recent development of the use of the large-scale pseudopotential method to calculate the electronic structure of semiconductor nanocrystals, such as quantum dots and wires, which often contain tens of thousands of atoms. The calculated size-dependent exciton energies and absorption spectra of quantum dots and wires are in good agreement with experiments. We show that the electronic structure of a nanocrystal can be tuned not only by its size,but also by its shape. Finally,we show that defect properties in quantum dots can be significantly different from those in bulk semiconductors.     

Critical Stage Rule-Based Real Time Dispatch（RTD）System in Highly-Mixed-Products （HMP） FAB

An improving utilization and efficiency of critical equipments in semiconductor wafer fabrication facilities are concerned. Semiconductor manufacturing FAB is one of the most complicated and cost sensitive environments. A good dispatching tool will make big difference in equipment utilization and FAB output as a whole. The equipment in this paper is In-Line DUV Scanner. There are many factors impacting utilization and output on this equipment group. In HMP environment one of the issues is changing of reticule in this area and idle counts due to load unbalance between equipments. Here we'll introduce a rule-based RTD system which aiming at decreasing the number of recipe change and idle counts among a group of scanner equipment in a high-mixed-products FAB.     

Optical vibration and deviation measurement of rotating machine parts

It is of interest to get appropriate information about the dynamic behaviour of rotating machinery parts in service. This paper presents an approach of optical vibration and deviation measurement of such parts. Essential of this method is an image derotator combined with a high speed camera or a laser doppler vibrometer （LDV）.