无线传感器网络的神经网络模型

无线传感器网络是复杂的无线网络。无线传感器网络拥有大量的网络节点。网络节点是无线传感器网络的基础。为了研究复杂的无线传感器网络，采用了神经元描述了WSN的网络节点，用神经元模型表示了无线传感器网络。给出了无线待感器网络节点的神经元模型和无线传感器网络的神经网络模型，并将神经网络应用于无线传感器网络的数据融合应用。结果表明，基于神经网络的无线传感器网络研究可以使得复杂研究变得简单，利于开展WSN的深入研究。     

目标跟踪中协方差控制的分布式多传感器管理

传感器管理就是研究如何分配传感器资源，控制各传感器工作模式的问题。由于现代雷达面临着反辐射导弹威胁，所以对目标进行跟踪时，使用传感器管理方法，合理对雷达进行资源调度，可以减少辐射量，提高自身的生存能力。文中讨论了一种基于协方差控制的传感器管理方法，给出了分布式跟踪结构下的传感器分配算法，并对目标跟踪时使用该算法调度传感器资源调度进行了仿真，仿真结果验证了该算法的有效性。     

微型传感器及纳米传感器

综述了微型传感器及纳米传感器的发展现状，叙述了微型传感器技术的发展趋势及其关键技术，并介绍了微型传感器技术在军事领域中的应用情况。     

CMOS图像传感器的发展及应用

比较了CMOS图像传感器与CCD图像传感器的优缺点，分析了CMOS图像传感器的结构、研制现状、应用及市场前景。指出随着CMOS传感器技术的发展，CMOS图像传感器可以代替CCD图像传感器，并预见了其发展趋势。     

全固态CO气体传感器

概括了目前CO气体传感器的国内外发展状况，提出了传统电化学气体传感器存在的问题，介绍了一种利用Nafion膜为固态电解质的CO气体传感器，阐述了它的工作原理。对电极材料？薄膜材料？固态电解液？电路等关键技术进行了讨论，重点介绍了电极的活化、液态电解质的固化及传感器的抗干扰、抗恶劣环境影响等技术研究，给出了传感器的结构和电路原理图，讨论了传感器的性能特点和发展方向。     

电容式湿度传感器性能测试方法分析

湿度传感器产品及湿度测量属于90年代兴起的行业。如何判断湿度传感器的性能，这对一般用户来讲，仍是一件较为复杂的技术问题。针对目前湿度传感器在生产过程中还停留在手工测试所存在的一些问题，对电容式湿度传感器进行了详细地分析，利用电容式湿度传感器的等效形式，阐述了使用复数电压法测量对湿度传感器的测量过程，建立了复数电压法电容式湿度传感器性能测试数学模型。     

仿生偏振导航传感器实验模型的构建与标定

针对研制仿生导航微传感器的需要，设计并且搭建了偏振导航传感器实验模型。分析了仿生导航传感器工作的原理，构建了传感器模型实验平台和光学标定装置。利用光学标定装置对导航传感器进行了暗场标定、均匀非偏振光标定。进行了导航定位角度输出实验，获得了导航传感器三个偏振方向分析器标准化输出曲线。测试结果表明这种新型传感器的设计是合理有效的。     

CMOS图像传感器赶超CCD图像传感器

比较了CMOS图像传感器与CCD图像传感器的优缺点，分析了CMOS图像传感器的结构、研制现状、应用及市场前景。提出了随着CMOS图像传感器技术的发展，CMOS图像传感器可以代替CCD图像传感器，并对其发展趋势作了预见。     

CMOS图像传感器的发展现状及关键技术探讨

介绍了国外CMOS图像传感器技术的发展状况，比较了CMOS图像传感器技术与CCD图像传感器技术的优缺点，分析了国内CMOS图像传感器技术的研究现状，探讨了CMOS图像传感器研究的关键技术。     

MEMS固态风速风向传感器的设计与制作

风速风向参数的测量在气象测量中占有重要的地位。基于MEMS技术的固态风速风向传感器具有体积小、重量轻、成本低的优点。设计了两种基于MEMS工艺的固态测风传感器，即硅薄膜式测风传感器和硅悬梁式测风传感器，用流体力学原理对这两种风速风向传感器进行了理论分析及ANSYS CFD软件模拟仿真，得出了风速与挠度、剪切力的关系。用惠斯通电桥测量传感器输出信号，通过单个传感器的二次封装测量风向信号。制作出了硅悬梁式测风传感器，并进行了初步测试。     

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.     

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.     

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.     

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.     

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.     

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     

Call for Papers—Feature Topic,Vol.12,No.7,2015

正Information Centric Networking Information-Centric Networking(ICN) is an emerging direction in Future Internet architecture research,gaining significant tractions among academia and industry.Aiming to replace the conventional host-to-host communication model by a data-centric model,ICN treats data content as the first     

JOURNAL OF ELECTRONICS(CHINA)

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NEXT GENERATION WIRELESS NETWORKS–ESPECIALLY THE USE OF MILLI-MICROWAVE BANDS

The global bandwidth shortage of wireless communications has motivated the exploration of the naillimeter wave （ram-wave） frequency spectrum for the next generation wireless communications. Recent advances in RF CMOS technology and high speed baseband signal processing technologies have enabled tile extensive research and development of turn-wave wireless communications. The multi gigabit per second data rate of ram-wave system will lead to applications in many important scenarios, such as WPAN, WLAN,back-haul for cellular system. And the frequency bands include 28 GHz, 38 GHz, 45GHz, 60GHz, E-BAND and even beyond 100 GHz. The propagation and the imitation of the RF circuits design in these frequency bands make the directional antennas be inevitable for mm-wave communications.