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{"title":"Copyright page","authors":"","doi":"10.1109/ICWS.2005.41","DOIUrl":"https://doi.org/10.1109/ICWS.2005.41","url":null,"abstract":"ing Is permitted with credit to the source. Libraries are permitted to photocopy beyond the limit of U.S. copyright law for private use of patrons those articles in this volume that carry a code at the bottom of the first page, provided that the per-copy fee indicated in the code is paid through the Copyright Clearance Center, 222 Rosewood Drive, Danvers. MA 01923. For other copying, reprint, or republication permission. write to IEEE Copyrights Manager, IEEE Service Center, 445 Hoes Lane, Piscataway, NJ 08854. All rights reserved. IEEE Catalog Number [CFP1186N-ART] ISBN [978-1-4577-0069-9] Additional copies of this publication are available from: Curran Associates, Inc. 57 Morehouse Lane Red Hook, NY 12571 USA Phone: (845) 758-0400 Fax: (845) 758-2633 E-mail: curran@proceedings.com","PeriodicalId":125634,"journal":{"name":"2011 Saudi International Electronics, Communications and Photonics Conference (SIECPC)","volume":"248 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116445975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Frequency invariant beamforming using sensor delay line 基于传感器延迟线的频率不变波束形成
Abdullah Alshammary
Wideband operation and pattern shaping in one dimension can be achieved using a planar array antenna with a real-valued coefficients or weights. The extra dimension is used to sample the signal in space and treat each frequency independently. Two methods to calculate the weights for the desired array pattern have been compared. These are Spatial Response Variation Constraint Pattern Synthesis (SRVCPS) and Inverse Discrete Fourier Transform (IDFT). The SRVCPS method relies on optimizations. The Spatial Response Variation (SRV) is constrained to ensure wideband operation. The IDFT method applies inverse Fourier transformation to the desired pattern which produces the required weights. Methods are compared in terms of beamwidth, sidelobe level and processing speed.
利用具有实值系数或权值的平面阵列天线可以实现一维的宽带操作和方向图整形。额外的维度用于在空间中采样信号并独立处理每个频率。比较了两种计算期望阵列方向图权重的方法。这些是空间响应变化约束模式合成(SRVCPS)和反离散傅里叶变换(IDFT)。SRVCPS方法依赖于优化。空间响应变化(SRV)被限制以保证宽带运行。IDFT方法将傅里叶反变换应用于产生所需权重的所需模式。从波束宽度、旁瓣电平和处理速度等方面对几种方法进行了比较。
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引用次数: 0
Retro-propagation algorithm used for tuning parameters of ANN to supervise a pharmachemical industry 逆向传播算法用于人工神经网络的参数调整,以监督制药行业
D. Benazzouz, M. Amrani, S. Adjerid
This paper presents the retro-propagation algorithm for tuning the parameter of Artificial Neural Networks used by pharmachemical industry. The numerical test results obtained on lubrication and air circuits shown that the proposal improve the performance in terms of number of iterations and reliability of the models. BEKER Laboratories production line, is a Pharmaceutical production company located at Dar El Beida (Algiers-Algeria), was kept as the main target of this study. After careful inspection, the weakest and the strongest points of the system were identified and the most strategic equipment within the line (the compressor) was taken as the equipment of focus. From this specific point, failure simulations are most adequate and from this selected target, the designed system will be better positioned for failure detection during the production process.
提出了一种用于制药工业人工神经网络参数整定的反向传播算法。润滑回路和空气回路的数值试验结果表明,该方法提高了模型的迭代次数和可靠性。BEKER实验室生产线是一家位于Dar El Beida(阿尔及利亚阿尔及尔)的制药生产公司,被保留为本研究的主要目标。经过仔细检查,找出了系统的弱项和强项,并将线路内最具战略意义的设备(压缩机)作为重点设备。从这一点来看,故障模拟是最充分的,从这个选定的目标来看,设计的系统将更好地定位于生产过程中的故障检测。
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引用次数: 0
Characterization and simulation of optimized micro paddle bridge resonator for magnetic field measurements 用于磁场测量的优化微桨桥谐振器的特性与仿真
F. Ahmad, N. H. Hamid, M. Khir, J. Dennis
A novel design of micro paddle bridge resonant magnetic field sensor based on electrostatic actuation and capacitive detection technique is characterized and simulated using CoventorWare. The sensor consists of Aluminum plus shape paddle bridge resonator with two proof mass arms, driving electrodes, sensing electrode and silicon substrate. Working in a resonant condition, the sensor's vibration amplitude is converted into the sensing capacitance change, which reflects the outside magnetic flux-density. Based on the simulation, the key structure parameters are optimized and the resonant frequency is estimated. The results of the device are in accordance with the theoretical values of the designed model. The results indicate its sensitivity 0.252 pA/uT, when operating at 10% of critical damping. The sensitivity and resolution can be enhanced through vacuum packaging.
本文对一种基于静电驱动和电容检测技术的新型微桨桥谐振磁场传感器进行了表征,并利用CoventorWare进行了仿真。该传感器由带有两个防质量臂的铝+型桨桥谐振器、驱动电极、传感电极和硅衬底组成。工作在谐振状态下,传感器的振动幅值被转换成传感电容的变化,反映了外界的磁通密度。在仿真的基础上,对关键结构参数进行了优化,对谐振频率进行了估计。实验结果与设计模型的理论值吻合较好。结果表明,当工作在临界阻尼的10%时,其灵敏度为0.252 pA/uT。通过真空封装可以提高灵敏度和分辨率。
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引用次数: 2
Fixed wireless service coexistence with IMT-A system within UHF band UHF频段内与IMT-A系统共存的固定无线业务
Z. Shamsan, A. Al-hetar, T. Rahman
Coexistence analysis is exceedingly important in investigating the possibility for spectrum sharing between IMT-A system and existing wireless services. The 470–862 MHz frequency band is currently allocating to several services such fixed wireless access (FWA). International telecommunication union-radio (ITU-R) sector has allocated sub-bands within 470–862 MHz for IMT-A system. This concurrent operation causes a destructive interference that influences the coexisting feasibility between IMT-A and this existing service, FWA. This paper addresses a timely and topical problem dealing with spectrum sharing and coexistence between an IMT-A systems and FWA service within 790–862 MHz. Co-channel and adjacent channel with an overlapping band and with or without guard band are intersystem interference scenarios investigated. The deterministic analysis is carried out by spectral emission mask (SEM) technique. Different significant factors such as channel bandwidths, propagation path lengths, and clutter loss which influence the feasibility of coexistence are examined. Feasible coexistence coordination procedures in terms of separation distance, frequency offset, and guard band are suggested.
共存分析对于研究IMT-A系统与现有无线业务之间频谱共享的可能性非常重要。470-862兆赫频段目前被分配给固定无线接入(FWA)等几种业务。国际电信联盟-无线电(ITU-R)部门在470-862兆赫范围内为IMT-A系统分配了子频段。这种并发操作造成破坏性干扰,影响IMT-A和现有业务FWA共存的可行性。本文讨论了在790-862 MHz范围内IMT-A系统和FWA业务之间的频谱共享和共存问题。研究了带重叠带和带保护带或不带保护带的同信道和相邻信道的系统间干扰情况。利用光谱发射掩膜(SEM)技术进行了确定性分析。考察了信道带宽、传播路径长度和杂波损耗等影响共存可行性的重要因素。从分离距离、频偏和保护频带三个方面提出了可行的共存协调程序。
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引用次数: 6
Influence of the α-factor in the output and noise of InGaAs fiber-grating laser α-因子对InGaAs光纤光栅激光器输出和噪声的影响
S. Abdulrhmann
Theoretical investigations on the output power and intensity noise of fiber-grating semiconductor laser are performed based on intensive numerical integration of an improved time-delay rate equations of semiconductor laser over wide range of the α-factor and strong optical feedback. The simulation results indicated that the laser under strong optical feedback induce CW, pulsation or chaos operation depending on the value of α-factor and optical feedback strength. At higher values of α-factor and under very strong optical feedback the pulsing operation associated with reasonable intensity noise level (as low as quantum noise level) and becomes more dominant. We expect that fiber-grating laser subjected to strong optical feedback exhibits much more stability under higher values of α-factor which, means that the laser is locked at the external cavity frequency and pulsing operation is optimum for operating fiber-grating lasers.
基于改进的半导体激光器大α-因子范围内强光反馈延时率方程的数值积分,对光纤光栅半导体激光器的输出功率和强度噪声进行了理论研究。仿真结果表明,强光反馈作用下的激光会产生连续波、脉动或混沌,这取决于α-因子的大小和光反馈强度。在较高的α-因子值和很强的光反馈下,脉冲操作与合理的强度噪声级(低至量子噪声级)相关联,并变得更加占优势。我们期望在强光反馈作用下的光纤光栅激光器在较高的α-因子值下表现出更好的稳定性,这意味着激光被锁定在外腔频率,脉冲操作是光纤光栅激光器的最佳操作方式。
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引用次数: 0
Dynamic sleep scheduling for minimizing delay in wireless sensor network 无线传感器网络中的动态睡眠调度
B. Nazir, H. Hasbullah
Dynamic Sleep Scheduling (DSS) for Minimizing Delay in Wireless Sensor Network is proposed. To reduce delay, DSS identifies nodes for different sleep/wake according to their traffic load at two levels: a) Nodes with different sleep/wake schedule requirement according to their different traffic load based on their topological importance in the network. b) Nodes with different sleep/wake schedule based on handling burst traffic in the proximity of event occurrence node. It then assign different active interval to the nodes, according to their variable traffic load requirement defined by node topological importance and by handling burst traffic in the proximity of event occurrence node. Using these heuristics DSS reduces end-to-end delay and minimize energy per packet by minimizing the congestion at nodes having heavy traffic load. Simulations are carried out to evaluate the performance of the proposed protocol, by comparing its performance with S-MAC and anycast protocols. Simulation results demonstrated that the proposed protocol has significantly reduced the end-to-end delay, as well as has improved average energy per packet.
提出了一种用于无线传感器网络时延最小化的动态睡眠调度方法。为了减少延迟,DSS根据不同的流量负载,在两个层次上识别不同的睡眠/唤醒节点:a)根据不同的流量负载,根据其在网络中的拓扑重要性,确定不同的睡眠/唤醒调度需求的节点。b)基于处理事件发生节点附近突发流量的不同睡眠/唤醒计划的节点。然后,根据节点拓扑重要性定义的节点可变流量负载需求,通过处理事件发生节点附近的突发流量,为节点分配不同的活动间隔。使用这些启发式DSS减少了端到端延迟,并通过最小化具有高流量负载的节点上的拥塞来最小化每个数据包的能量。通过与S-MAC和任播协议的性能比较,对该协议的性能进行了仿真评估。仿真结果表明,该协议显著降低了端到端时延,提高了每包平均能量。
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引用次数: 42
(MVO) study of antenna and its 3D scale modeling by Finite integration (FIM) method 用有限积分(FIM)方法研究天线及其三维比例建模
Nadeem Nasir, N. Yahya, M. Akhtar
In sea bed logging detection of hydrocarbon reservoir is a very challenging task for shallow water and deep target. Magnitude of electromagnetic field response is very low and cannot be able to detect the deep target. To detect deep target new aluminium curve antenna is designed by using computer simulation technology (CST) software. 3D scale modeling with and without hydrocarbon was done by Finite integration method (FIM). Straight and curve antenna comparison was done in a 3D scaled marine environment. It was investigated that new design gave 158% higher magnetic field strength than straight antenna. A scale tank with a scale factor of 2000 was built to test the new designed antenna. The series of experiments were done to evaluate the performance of new design antenna with and without the presence of oil in a scale model. Magnitude verses offset (MVO) was done with new design curve antenna with and without oil. The experimental data was recorded with new design antenna with and without oil placed left and right side of receivers (Rx−1, Rx−3) respectively. The magnitude of the EM waves of this new designed antenna increases up to 168% with hydrocarbon. Curve fitting method using MATLAB software was done to validate the MVO data of new designed antenna with and without oil. Correlation value with new design antenna also confirms the presence of oil in a scale model.
海底油气储层的测井探测是一项非常具有挑战性的任务,主要针对浅水和深水目标。电磁场响应幅度很低,无法探测到深部目标。为了探测深部目标,利用计算机仿真技术(CST)软件设计了新型铝曲线天线。采用有限积分法(FIM)进行了含烃和不含烃的三维比例建模。在三维海洋环境中进行了直线天线和曲线天线的对比。研究表明,新型天线的磁场强度比普通天线高158%。建立了一个比例系数为2000的比例池来测试新设计的天线。在比例模型上对新设计的天线在有油和无油情况下的性能进行了一系列试验。用新设计的曲线天线在加油和不加油的情况下进行了幅值与偏移量的比较。实验数据记录在新设计的天线上,在接收器(Rx−1,Rx−3)的左侧和右侧分别放置油和不放置油。这种新设计的天线的电磁波强度在碳氢化合物的作用下增加了168%。利用MATLAB软件进行曲线拟合,对新设计的带油和无油天线的MVO数据进行了验证。与新设计天线的相关值也证实了比例模型中油的存在。
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引用次数: 0
Classes of attacks in VANET VANET的攻击等级
Dr.Irshad Ahmed Sumra, I. Ahmad, H. Hasbullah, Jamalul-lail bin Ab Manan
Last few years, vehicular network has been taken more attention of researchers and automotive industries due to life saving factor. Vehicular Ad hoc Network (VANET) needs security to implement the wireless environment and serves users with safety and non safety applications. Attackers generate different attacks in this life saving vehicular network. In this paper, we propose five different classes of attacks and every class is expected to provide better perspective for the VANET security. The main contribution of this paper is the proposed solution for classification and identification of different attacks in VANET.
近年来,车联网因其节省生命的特性,越来越受到研究人员和汽车行业的重视。车载自组织网络(VANET)需要安全性来实现无线环境,并为用户提供安全和非安全应用。在这个救命的车载网络中,攻击者会产生不同的攻击。在本文中,我们提出了五种不同的攻击类型,每种类型都有望为VANET的安全性提供更好的视角。本文的主要贡献是提出了VANET中不同攻击的分类和识别解决方案。
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引用次数: 111
ROS-based mapping, localization and autonomous navigation using a Pioneer 3-DX robot and their relevant issues 先锋3-DX机器人基于ros的制图、定位和自主导航及其相关问题
S. Zaman, W. Slany, Gerald Steinbauer
The Robot Operating System (ROS) provides operating system-like services to operate robots. Mapping, localization, and autonomous navigation in an indoor environment are popular issues in the field of autonomous robots. Autonomous navigation in a dynamic environment is not only challenging but also uncovers many indoor environmental factors which affect the process of mapping and navigation. The presented work describes how a ROS-based control system is used with a Pioneer 3-DX robot for indoor mapping, localization, and autonomous navigation. Mapping of different challenging environments is presented in this work. Moreover, some factors associated with indoor environments that can affect mapping, localization, and automatic navigation, are also presented. For experiments, three environments (one artificial and two real) have been tested. Some implementation was done in C and Python.
机器人操作系统(ROS)提供类似操作系统的服务来操作机器人。在室内环境下的测绘、定位和自主导航是自主机器人领域的热门问题。动态环境下的自主导航不仅具有挑战性,而且揭示了许多影响测绘和导航过程的室内环境因素。本文介绍了基于ros的控制系统如何与先锋3-DX机器人一起用于室内测绘、定位和自主导航。在这项工作中提出了不同挑战性环境的映射。此外,还介绍了与室内环境相关的一些影响地图绘制、定位和自动导航的因素。在实验中,已经测试了三种环境(一个人工环境和两个真实环境)。一些实现是用C和Python完成的。
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引用次数: 99
期刊
2011 Saudi International Electronics, Communications and Photonics Conference (SIECPC)
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