本 期 摘 要

一种新的质量图引导的相位展开算法

作者：姜文印

单位：西南交通大学现代物理研究所，四川成都 610000

摘要：相位展开主要用于车轮探伤时提取车轮外形信息，不同算法展开后相位的质量也是不同的。介绍了传统的质量图引导的相位展开算法，针对该算法在处理问题的不足，对其进行改进，得到了一种新的质量图引导的相位展开算法。该算法将像素点二阶差分值的倒数定义为质量点，通过将相邻像素点进行平均，得到全新的质量值，引导相位展开。通过比较枝切法、质量图导向法、最小二乘法以及本文的改进算法四种相位展开算法的仿真实验，结果表明该算法展开误差小，计算速度快，能够有效处理相位展开中不连续的问题。最后通过车轮实验验证了结果。

关键词：质量图导向法；质量图；相位展开；质量值；可靠度

中图分类号：O438.2 文献标识码：A

文章编号：1006-883X(2018)07-0007-07

收稿日期：2018-05-10

A New Phase Unwrapping Algorithm Based on Quality Map Guidance

JIANG Wen-yin

Institute for Modern Physics, Southwest Jiaotong University, Chengdu 610000,China

Abstract: Phase unwrapping algorithm is mainly used to extract the profile information of wheels in flaw detection. The quality values of phases are also different for different algorithms. The traditional quality-map-guided phase unwrapping algorithm is introduced firstly in this paper. A new quality-mapguided phase unwrapping algorithm is proposed aiming at the shortages of the traditional. This algorithm defines the reciprocal of the second order difference value of pixel point as the quality point. By averaging the quality values of adjacent pixel points, a new quality value is obtained to guide the phase unwrapping. The simulation results of four phase unwrapping algorithms-Branch-cut method, quality map guidance, least squares method, improved algorithm presented in this paper are compared and show that the improved algorithm has smaller error and faster calculating speed, and can deal with the problem of discontinuity in phase unwrapping effectively. Finally, the practical wheel experiments are completed and also verify the conclusion.

Key words: quality map guidance; quality map; phase unwrapping; quality value; reliability

Ag掺杂WO3纳米材料的光电催化性能研究

注：福建省自然科学基金面上项目（NO. 2017J01770）；

省级大学生创新创业训练计划专项（NO. 201710395032）

作者：杨静雅，阮彩娟，韩妙玲，帅文军，余华梁

单位：闽江学院物理学与电子信息工程系，福建闽江 350100

摘要：以钨酸铵、硝酸银为原料制备了Ag掺杂WO3纳米材料，对材料进行X射线衍射（XRD）、扫描电子显微镜（SEM）表征，并在不同外加电压下测试材料光催化降解罗丹明B的性能。实验结果表明，适当的外加电场加快了Ag掺杂WO3纳米材料光催化降解罗丹明B的速率。

关键词：Ag掺杂WO3纳米材料；光电催化；罗丹明B

中图分类号：O64 文献标识码：A

文章编号：1006-883X(2018)07-0015-04

收稿日期：2018-04-27

Study on Photoelectric Catalytic Performance of Ag-doped WO3Nano Materials

YANG Jing-ya, RUAN Cai-juan, HAN Miao-ling, SHUAI Wen-jun, YU Hualiang

Department of physics and electronic information engineering, Minjiang University, Minjiang 350100, China

Abstract: Ag-doped WO3nano materials are prepared with ammonium tungstate and silver nitrate as raw materials. X-ray diffraction (XRD) and scanning electron microscope (SEM) are used to characterize the materials. The photocatalytic degradation of Rhodamine B is tested under different applied voltage. The experimental results show that the appropriate applied electric field accelerates the degradation of Rhodamine B by Ag-doped nano-WO3photocatalysis.

Key words: Ag-doped nano-WO3; photoelectron-catalysis; Rhodamine B

高精度转台的分析与设计

作者：苏芬平1，崔伟2

单位：1.北京航天科颐技术有限公司，北京 100091；

2.中国航天科工集团第二研究院206所，北京 100854

摘要：设计了一种高精度转台，选用力矩电机直接驱动负载，既消除了齿隙回差又缩短了传动链，使机械结构简单紧凑，使控制系统具有反应速度快、线性度好，共振频率高等优点，提高了系统的稳定性及静态、动态控制精度。高精度转盘轴承和力矩电机配合使用，提高了转台的承载能力，并使转台结构简化。采用电磁制动器和齿轮副进行方位轴和俯仰轴的制动，起到断电制动作用。对转台的限位、自锁、报警等安全性和防护性能进行详细设计介绍。并通过有限元分析验证主要零部件的结构强度及计算谐振频率。

关键词：转台；高精度；力矩电机；转盘轴承

中图分类号：TH115;TH12 文献标识码：A

文章编号：1006-883X(2018)07-0019-06

收稿日期：2018-06-06

Analysis and Design of a High Precision Two-dimensional Turntable

SU Fen-ping1, CUI Wei2

1. Beijing Keyi Aerospace Technology Co.,Ltd, Beijing 100091, China; 2.China Aerospace Science and Industry Corporation Ltd. Second Research Institute 206, Beijing 100854, China

Abstract: A high precision turntable is designed in this paper. The torque motor is used to drive the load directly, which eliminates the backlash and shortens the transmission chain. So the mechanical structure is simple and compact, the control system has many merits such as quick response, good linearity and high resonance frequency and is improved in stability and static/dynamic control precision. High precision turntable bearing and torque motor are used together to improve the bearing capacity and simplify the structure of the turntable. The electromagnetic brake and the gears are used together for braking the azimuth shaft and pitch shaft, which has the function of power-off braking. The safety and protection performance of limit control, self-lock, alarm and so on are introduced in detail. The structural strength and the resonance frequency of the main components are verified with Finite element analysis.

Key words: turntable; high precision; torque motor; turntable bearing

变异系数相似度在紧急群决策中的应用

作者：冯长敏

单位：北京信息科技大学 理学院，北京 100192

摘要：考虑应急决策问题，基于Jaccard 、Dice和余弦相似度，提出了一种新的相似度定义——变异系数相似度。介绍了四种相似度的特点，然后将变异系数相似性应用于应急群决策问题。通过每一个方案和目标方案的相似度，可以得出所有方案的一个排序，然后找出最优方案。最后，

举例评价中国湖南省重大冰雪灾害急救管理能力。作为比较，也给出了不同的相似性度量的决策结果。从结果看出，新方法具有更好的相似性识别，适用于紧急群决策应用。

关键词：相似性；应急决策；变异系数；多准则群决策

中图分类号：O231.1 文献标识码：A

文章编号：1006-883X(2018)07-0026-05

收稿日期：2018-05-21

Application of Variation Coefficient Similarity in Emergency Group Decision Making

FENG Chang-min

School of Applied Science, Beijing Information Science and Technology University, Beijing 100192, China

Abstract: Considering the problem of emergency group decision making, a new similarity-variation coefficient similarity is defined based on Jaccard, Dice and cosine similarity. The features of four kinds of similarity are introduced,and then the variation coefficient similarity is applied to the emergency group decision making. According to the similarity of each scheme, a ranking of all the schemes can be obtained, and then the optimal scheme can be found.Finally, an example is given to evaluate the emergency management ability of major snow and ice disasters in Hunan province of China. As a comparison, the decision results of different similarity measures are given. It is shown that the similarity defined in this paper is better in recognition and applicable.

Key words: similarity; emergency decision making; variation coefficient; multicriteria group decision-making

一种侦察打击一体化无人机地面站软件的设计与实现

作者：刘晨

单位：中国电子科技集团公司第二十七研究所，河南郑州 450047

摘要：近年来，无人机凭借设计灵活，成本低，零伤亡的特点，在多次战争中都起到了重要的作用。侦察打击一体化无人机既能侦察，又具有打击毁伤能力，引起了各方的广泛关注。本研究针对侦察打击一体化无人机的特点，设计了一套无人机地面站软件系统。文章从需求分析入手引出了软件设计，分别从系统框架、模块设计和系统工作流程进行了阐述，最后介绍了软件的关键技术实现方法和应用实例。

关键字：无人机；地面站；多线程

中图分类号：TP391.9 文献标识码：A

文章编号：1006-883X(2018)07-0031-07

收稿日期：2018-07-05

Design and Implementation of the Ground Station Software System for Reconnaissance-attack-integrated UAVs

LIU Chen

The 27th Research Institute, China Electronics Technology Group Corporation,Zhengzhou 450047, China

Abstract: In recent years, Unmanned Aerial Vehicles (UAVs) have played important roles in many wars due to flexible design, low cost and zero casualty.Not only reconnaissance, reconnaissance and attack integrated UAVs also have the ability of combat damage, so have attracted wide attention from all parties.Based on the characteristics of reconnaissance and attack-integrated UAVs,a software system for the UAV ground stations is designed in this paper. The software design is introduced from the requirement analysis, and the system framework, module design and system work flow are expounded respectively.Finally, the key technology implementation methods and application examples of the software are introduced.

Key words: Unmanned Aerial Vehicle (UAV); ground station; multithread

世界第一款K波段DAC的设计

作者：Marc Wingender Romain Pilard Julien Duvernay

单位：Teledyne e2v 公司，美国

摘要：本文透露了Teledyne e2v 公司世界首款K波段数模转换器EV12DS460A背后的设计秘密，介绍了为提高性能和规避CMOS设计限制而引入的超高速制程。解释了如何通过紧凑的单核量化器，配合仔细斟酌的设计方案，让EV12DS460A的性能具有突破性提高。最后说明布线和电路简化的细微差别是设计时应考虑的重要因素。

关键词：K波段；数模转换器；EV12DS460A；带宽

中图分类号：TN79+2 文献标识码：B

文章编号：1006-883X(2018)07-0039-07

收稿日期：2018-04-25

Design of the World's First K-band DAC

Marc Wingender, Romain Pilard, Julien Duvernay

Teledyne e2v, USA

Abstract: The design secrets behind the world's first K-band data-analog converter (DAC) EV12DS460A from Teledyne e2v are presented.The reasons why new capabilities can emerge are avoiding established CMOS design principles and applying an ultra-high speed process. It is explained how a compact, single-core quantizer coupled with careful design choices leads to the breakthrough performance of EV12DS460A . Finally, it is shown that the delicate differences between wiring and circuit simplification are important factors to be considered in design.

Key words: K band; digital-analog converter(DAC); EV12DS460A; band wide

使用模块化平台实现高能效物联网设备

作者：Pavan Mulabagal

单位：安森美半导体，美国

摘要：传感技术的最新进展和新出现的通信协议为物联网的推广提供了动力。但是，物联网多学科性质对技术的广泛性要求，以及用户对电池寿命的担忧，对发展物联网应用提出了挑战。保证高效运行的互联技术、创新的免电池传感器和综合性模块化开发平台将为物联网的潜在用户和解决方案提供商提供更多的机会。本文介绍了安森美半导体的蓝牙低能耗生态系统RSL10、智能无源传感器技术和IoT开发套件(IDK)，有助于快速制作物联网相关产品原型，减少产品上市时间。

关键词：物联网；低功耗蓝牙；智能无源传感器；物联网开发套件

中图分类号：TP212 文献标识码：D

文章编号：1006-883X(2018)07-0046-03

收稿日期：2018-05-20

Implementing Energy Efficient IoT Devices Using Modular Platforms

Pavan Mulabagal

ON Semiconductor, USA

Abstract: New technical advances in sensing and emerging communication protocols give the deployment of the Internet of Things (IoTs) real momentum.But a broad set of competencies from the multi-disciplinary nature of IoT and the worry about battery life are challenges for development of IoT application.Connectivity technologies delivering highly efficient operation, innovative battery-free sensor and comprehensive modular developing platform will give more help for potential users and solution providers of the IoTs. A Bluetooth low energy ecosystem RSL10, smart passive sensing technology and an IoT Development Kit (IDK) from ON Semiconductor are introduced, which aid customers in rapidly prototyping relevant IoT products and reduce the time-tomarket of products.

Key words: Internet of Thing (IoT); Bluetooth low energy; smart passive sensor; IoT development kit