功率吸收钳自动测试系统的研制

利用功率吸收钳可对甚高频段（ＶＨＦ）由家用电器和类似器具所产生的骚扰功率进行测量。然而，国内以往的吸收钳式测量以手动为主，测量耗时长，效率低，不利于测量的标准化和规范化，为此，迫切需要开发功率吸收钳自动测试系统。本文在探讨吸收钳式测量方法自身特点的基础上，详细描述了北方交通大学电磁兼容研究中心研制开发的功率吸收钳自动测试系统ＰＡＣＡＴＳ－Ｉ的软、硬件开发及系统构成与应用。     

纳米长度测量的标准化研究

本文从纳米测量的标准化文件、标准物质、测量不确定度的评定三个方面简述了有关纳米长度测量方法的标准化概况及国内外的进展。     

承前启后 提升标准化迈向新台阶

2012年是实施国家《标准化事业发展"十二五"规划》承上启下的重要一年。工信部研究制定了《工业和信息化部2012年标准化重点工作》(下称《重点工作》),明确了2012年工业和通信业标准化工作的总体思路和主要任务。工信部也于今年相继发布各领域"十二五"发展规划,其中在标准化方面,研究部署了当前和今后一段时期的标准化工作,对各专业领域标准化工作起到了指导     

多媒体视频质量测量的研究和标准化

多媒体视频是电信运营商的重要业务,如何准确地测量多媒体视频质量,反馈给运营商,更好的监测管理,提升客户体验,至关重要.本文将从多媒体视频质量测量的应用需求、主观评价方法、客观测量方法、标准化等几个方面展开研究,重点分析视频视觉质量(PVQ)测量技术,其中无参考测量技术是目前国际研究和标准化的重点.在PVQ测量的基础上,...     

企业标准化在质量管理中的地位和作用

围绕企业标准化与质量管理的相互关系，通过企业标准化在产品实现过程即顾客一产品实现-顾客这一纵向质量管理过程，以及横向上的计划、设计和开发、生产管理、采购管理、沟通与满意度测量等，总结出了企业标准化在质量管理中的主要地位和作用。     

电磁辐射防护服屏蔽效能测量系统的性能分析

对建立的电磁辐射防护服屏蔽效能测量系统的性能进行了分析,分析了测量仪器动态范围对测量结果的影响,以及实际测量曲线产生纹波的原因,并给出测量曲线的修正方法。最后,对测量系统的一致性和稳定性进行了验证。结果表明,测量系统和测量方法具有很好的一致性和稳定性,可作为电磁辐射防护服屏蔽效能的一种标准化测量方法。     

基于多普勒效应的脱靶量测量技术应用

基于多普勒效应的脱靶量测量系统可以测量出遭遇段弹目相对距离和相对运动轨迹,评估武器引战配合能力和判定杀伤效果是鉴定精确制导武器系统性能的重要测量手段。通过研究基于多普勒效应的脱靶量测量系技术工作原理,将该测量系统应用于导弹射击试验中,获得了遭遇段弹目相对距离和相对运动轨迹,对导弹性能评估给出了定量分析。     

频谱傅立叶法测量偏振模色散研究

对频谱傅立叶分析法测量偏振模色散进行了理论、模拟与实验研究。利用这种方法,分别对由一段、两段、三段保偏光纤组成的PMD模拟器进行了数值模拟．并对保偏光纤、单模光纤以及商用模拟器进行了实验测量,得到了很好的结果。将这种方法和波长极值计数测量法进行了比较,研究表明,由于考虑了偏振模色散的统计特性,频谱傅立叶分析法适于测量强耦合光纤。     

激光度量学是测量的一个新领域

随着激光技术的飞速发展，测量输出的激光参数和特性的方法和装置也飞速发展起来，并研制了相应的度量衡学的系统。考虑到关于这些课题发表的文献数量，属于激光器和由激光辐射控制的装置方面的术语、定义已标准化,而在激光参数测量领域内尚未采用标准化术语的情况下，作者们根据激光测量方面的专家的意见提出一个方便并办得到的术语分类，可首先把它们逐步地应用于科学技术文献中以压缩其篇幅。     

集成电路电磁兼容标准概述

随着集成电路新技术与应用的结合，增加了电磁兼容(EMC)符合性的复杂程度，对ICEMC性能的表征受到越来越多的关注。由此推动了对标准化测量规程的需求，使不同器件有一致的评价和比较。对标准化的需求进行了讨论，介绍了IECTC47／SC47A第9工作组在IC发射与抗扰度EMC试验方法标准化方面的工作进展情况。并探讨了ICEMC的发展趋势。     

Influence of 2-mercapto-5-nitrobenzimidazole treatment on the electronic characteristics of bottom-contact organic field-effect transistors

The treatment of the Au electrodes of an organic bottom-contact thin film transistor with 2-mercapto-5-nitrobenzimidazole (MNB) led to improved current–voltage characteristics. X-ray diffraction, atomic force microscopy, soft X-ray emission spectroscopy, and ultraviolet photoelectron spectroscopy were used to investigate the structure-function relationship in the device components MNB and pentacene. By treating the Au contacts with MNB prior to the pentacene deposition, the morphological and structural properties of the pentacene come to resemble the ideal case of pentacene deposited onto SiO₂. The action of the MNB is therefore to remove the transition region at the Au/pentacene interface, leading to improved charge carrier injection.     

MNB2算法在编解码器客观评估中的应用研究

本文讨论MNB2算法在编解码器质量的评估中的应用，探讨了编解码器进行客观评估的声学心理学基础，以及在此基础上建立的MNB2算法。深入剖析了MNB2算法的组成块TMNB，FMNB，并应用该算法对多种编解码器进行客观评估。实验证明该客观评估算法中主观与客观相关程度高，有较强的适应性，可靠性，实用性，完全可以应用于新型编解码器质量评估。     

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.     

电磁兼容检测实验室测试系统相符性比对研究

电磁兼容测试结果与检测实验室可靠性程度直接相关,检测实验室自身质量是保证电磁兼容测试结果准确性先决条件,检测实验室测试系统相符性则成为电磁兼容系统性能评估中需要考虑的关键内容和重要指标。因此,检测实验室测试系统相符性比对是实现电磁兼容系统评估研究的基础工作之一。本文首先针对电磁兼容检测实验室测试系统相符性比对的特点,结合自己几年来的测试实践论述了电磁兼容检测实验室测试系统相符性对比方案,然后提出了具体的案例同时进行了详细的分析,最后总结出了影响电磁兼容检测实验室测试系统相符性因素,整个案例和分析过程及结果可作为电磁兼容检测实验室测试系统相符性比对的手段和依据,具有重要的现实指导意义。     

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.     

圆球微腔对水蒸汽的敏感特性仿真实验研究

研究了圆球微腔在水蒸汽传感中应用的可行性。通过测试在有/无水蒸汽的气室环境下,圆球微腔透射光谱的变化来对气室水蒸汽浓度情况进行传感测试。仿真实验结果显示:在有无水蒸汽干扰的条件下系统输出光强有明显的变化,即研制基于圆球微腔的传感器是可行的。     

量化秩非参数CFAR检测器在杂波边缘中的性能分析

人们常用均匀背景、多目标和杂波边缘3种典型背景来衡量雷达目标检测器的性能,但在现有文献中缺乏量化秩（Rank Quantization,RQ）非参数检测器在杂波边缘中虚警概率的理论模型,缺乏RQ非参数检测器与经典的参量型检测器在杂波边缘中虚警控制能力的比较.本文给出了RQ检测器在杂波边缘中虚警概率的解析表达式,并比较了它与非相干积累CA （Cell Averaging）,GO （Greatest Of）,OS （Ordered Statistic）恒虚警方法在杂波边缘中的虚警控制能力.可以看出,采用高秩量化门限的RQ检测器的虚警控制能力要优于低秩量化门限的情况,在瑞利分布杂波边缘情况下,RQ检测器的虚警控制能力与非相干积累OS方法接近.但是当强杂波变为长拖尾分布的非高斯杂波时,非相干积累CA,GO和OS参量型检测方法的虚警概率产生了3个数量级以上的上升,且不能降回到原始设定的虚警概率.而RQ检测器显示出了非参量检测器的优势,即当杂波背景的分布类型发生变化后,它仍然可以保持虚警概率的恒定.     

一种改善LED背光亮度均匀性的新型反射膜研究

在LCD的LED背光腔体的底面设计了新型曲面形状及性能的反光膜,将扩散膜反射回灯腔底部的光重新反射回出光口以改善亮度均匀性能;在侧面设计了镜面反射膜,将位于LED矩阵边缘区域由LED射向灯腔侧壁的光反射重新射向出光口,增加了LED背光边缘区域的亮度,从而改善了背光边缘区域较暗的亮度不均匀状况.根据此类反射膜的设计完成了反射膜的制备,并应用于38 cm LED背光源样品.测试结果显示,设置反射膜的LED背光的亮度均匀性值为10.2%,明显优于未设置反射膜的值16.8%,亮度提高了29%左右,表明该种新型反射膜可以提高亮度并改善亮度均匀性.     

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.     

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.