一种基于蜂窝基站的全空间自定位方法

根据双频相位差测量的双曲线定位原理，提出一种基于蜂窝基站的全空间自定位方法。该方法不需要测量精确的时间差和标淮同步的模拟脉冲。文中首先给出全空间定位的精度分布表达式，然后详细讨论了基于蜂窝基站实现全空间自定位的基站布局可能性以及实时自定位算法。仿真与原理实验表明，基于蜂窝基站自定位方法合理，基站坐标经处理后，无定位盲区、无模糊多解、无解等现象，自定位算法满足实时性和高精度的要求，其中单点定位仿真计算仅需0．13g，理论迭代误差数量级小于10^-4。     

兴化市有线电视网络小区配套工程设计规范

开发商在新建小区的有线电视管网建设上,存在各种各样不符合有线电视建设与发展的问题,把实际工作中出现的这些问题加以总结,对兴化市新建小区的有线电视网络楼道管网布放进行规范,实践证明,对提高网络质量、改善网络结构有着积极意义。     

螺旋布设光纤光栅的软体操作器形状传感方法

为实现微创手术软体操作器弯曲伸缩运动时的形状测量,提出一种螺旋布设光纤光栅形状传感方法。不同于传统的直线形布设方法,螺旋形布设方法可以防止软体操作器弯曲伸缩运动时,光纤光栅的折断、脱胶现象发生。理论分析了螺旋布设光纤光栅的传感原理及弯曲变形的重构算法;制备了光纤光栅沿螺旋形布设在软体操作器表面的试样;搭建了软体操作器弯曲变形的实验系统;实验分析了软体操作器在不同弯曲状态下,螺旋布设光纤光栅中心波长漂移量与弯曲角度间的变化规律,并重构出软体操作器的变形形状。实验结果表明:螺旋布设光纤光栅在软体操作器中不同位置的灵敏度最大为7.1pm/(°),软体操作器弯曲角度实际测量值与理论重构值间的最大误差不足4.29%。螺旋形光纤传感方法可用于软体操作器形状传感与重构。     

一种具有84.8dB SFDR和72dB SNDR的14位80MS/s CMOS模数转换器

本文描述了一种基于0.35μm CMOS工艺的14位采样率80MS/s的流水线型模数转换器的设计. 所提出的电荷分享校正技术消除了与信号相关的电荷注入效应, 加上片内的低抖动时钟电路, 保证了模数转换器的高动态性能. 一种信号电容开关技术和高对称版图减小了电容失配, 确保了模数转换器的总线性度. 测试结果表明, 该模数转换器在36.7MHz输入频率下, 实现了11.6位的有效位, 84.8dB的无杂散动态范围(SFDR), 72dB的信号噪声失真比(SNDR), 在无校准情况下获得了＋0.63/－0.6 LSB的微分非线性和＋1.3/－0.9 LSB的积分非线性. 输入频率200MHz时,仍然可以保持75dB的SFDR和59dB的SNDR.     

超深亚微米可制造标准单元库设计

当集成电路的特征尺寸下降到100nm以下,可制造性设计就变得尤为重要。本文提出了一种65nm可制造性标准单元库的设计方法。通过精简基本单元的数量,降低光学矫正的时间和空间复杂度;利用DFM设计规则和光学模拟仿真对每个单元的版图进行优化以提高整个单元库的可制造性。应用该方法实现的标准单元库在时序,功耗,面积方面与传统标准单元库相比具有很好的性能,并且通过Foundry的TD部门65nm工艺线的可制造性测试,有利于65nm工艺生产良率的提升。     

基于CMOS多功能数字芯片的ESD保护电路设计

基于CSMC 2P2M 0.6 μm CMOS工艺设计了一种ESD保护电路。整体电路采用Hspice和CSMC 2P2M 的0.6 μm CMOS工艺的工艺库(06mixddct02v24)仿真,基于CSMC 2P2M 0.6 μm CMOS工艺完成版图设计,并在一款多功能数字芯片上使用,版图面积为1 mm×1 mm,参与MPW(多项目晶圆)计划流片,流片测试结果表明,芯片满足设计目标。     

Information and Telecommunications Project for a Digital City: A Brazilian case study

Making information and telecommunications available is a permanent challenge for cities concerned to their social, urban and local planning and development, focused on life quality of their citizens and on the effectiveness of public management. Such a challenge requires the involvement of everyone in the city. The objective is to describe the information and telecommunications project from the planning of a digital city carried out in Vinhedo-SP, Brazil. It was built as a telecommunications infrastructure of the kind of “open access metropolitan area networks” which enables the integration of citizens in a single telecommunications environment. The research methodology was emphasized by a case study which turned to be a research-action, comprising the municipal administration and its local units. The results achieved describe, by means of a methodology, the phases, sub-phases, activities, approval points and resulting products, and formalize their respective challenges and difficulties. The contributions have to do with the practical feasibility of the project and execution of its methodology. The conclusion reiterates the importance of the project, collectively implemented and accepted, as a tool to help the management of cities, in the implementation of Strategic Digital City Projects, in the decisions of public administration managers, and in the quality of life of their citizens.     

密封容器内爆炸实验瞬态温度测试技术

瞬态温度测试技术,涉及传感器选取、远传模块设计、信号抗干扰远距离传输、测点布局和防护等诸多技术问题。介绍了瞬态温度测试技术的发展过程,密封容器内爆炸实验瞬态温度测试系统的配置,硬软件设计思路、实现过程和关键技术解决办法,实验的测点布局和防护装置设计,并应用测试系统首次取得了某项实验瞬态温度数据。     

An improved shape shifting method of critical area extraction

As die size and complexity increase, accurate and efficient extraction of the critical area is essential for yield prediction. Aiming at eliminating the potential integration errors of the traditional shape shifting method, an improved shape shifting method is proposed for Manhattan layouts. By mathematical analyses of the relevance of critical areas to defect sizes, the critical area for all defect sizes is modeled as a piecewise quadratic polynomial function of defect size, which can be obtained by extracting critical area for some certain defect sizes. Because the improved method calculates critical areas for all defect sizes instead of several discrete values with traditional shape shifting method, it eliminates the integration error of the average critical area. Experiments on industrial layouts show that the improved shape shifting method can improve the accuracy of the average critical area calculation by 24.3% or reduce about 59.7% computational expense compared with the traditional method.     

局域动态一维版图压缩算法及其实现

本文给出了一种基于设计规则检查之上的一维版图压缩算法——局部的动态的一维压缩算法RDOC。这是一种特别适合于物理版图的算法,该算法建立约束图的运算时间是线性的,较以前的阴影传播法、垂直平面扫描法快,提高了压缩效率;本文还介绍了为实现该算法而开发的用于单元级版图的压缩程序,它允许用户按其需要对设计规则进行放大或缩小。最后给出了标准单元的压缩实例。