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2015 IEEE International Conference on Wireless for Space and Extreme Environments (WiSEE)最新文献

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Conceptualization of Software Defined Network layers over internet of things for future smart cities applications 面向未来智慧城市应用的物联网软件定义网络层概念化
M. M. Mazhar, Muhammad Atif Jamil, A. Mazhar, Anam Ellahi, M. Jamil, T. Mahmood
With recent advancements of Information and Communication technologies (ICT), Internet of things (IoT) development has just started creating a significant value across people, processes and organizations. There are numbers of applications across energy, transportation and public safety sectors that have linked with economic growth in GDP and therefore, governments are taking serious actions to enhance ICT and IoT penetration across their countries and achieve economies of scale. In future, it can be easily anticipated to meet growing demand, IoT applications scale will reach to millions of sensor devices in a few sq. kilometers area in order to transform traditional cities towards smart cities and accommodate the urbanization pressures. With the growing demand of data hungry devices and deployment of millions of sensors in a certain place will eventually increase size of information and data transmission flow through the sensor devices itself and infrastructure network nodes and then millions of IP addresses will be needed to provide connectivity. Wireless Sensor Networks implementation under internet of things context likely to approach limitations of network bandwidth availability and the cost of IoT infrastructure will be extremely high if dedicated network resources deployed therefore this paper proposed the innovative architecture using Software Defined Networks (SDN) to provide on demand and efficient network resources for low power wireless personal area network (6LowPAN) devices. This proposed architecture model will also strengthen the applications of IoT in either side i.e. control and monitoring.
随着信息和通信技术(ICT)的进步,物联网(IoT)的发展刚刚开始在人员、流程和组织中创造重要价值。能源、交通和公共安全领域的大量应用与GDP的经济增长有关,因此,各国政府正在采取认真行动,加强信息通信技术和物联网在其国家的渗透,实现规模经济。未来,可以很容易地预见到,为了满足不断增长的需求,物联网应用规模将在几平方米内达到数百万个传感器设备。以实现传统城市向智慧城市的转型,适应城市化的压力。随着数据饥渴设备的需求不断增长,在某个地方部署数百万个传感器,最终将增加通过传感器设备本身和基础设施网络节点的信息和数据传输流的规模,然后将需要数百万个IP地址来提供连接。物联网环境下的无线传感器网络实施可能会接近网络带宽可用性的限制,如果部署专用网络资源,物联网基础设施的成本将非常高,因此本文提出了使用软件定义网络(SDN)的创新架构,为低功耗无线个人局域网(6LowPAN)设备提供按需和高效的网络资源。这种提出的架构模型也将加强物联网在控制和监控方面的应用。
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引用次数: 17
RFID and RF harvesting wireless sensor network platform for launcher application 射频识别和射频采集无线传感器网络平台的发射器应用
J. Collignon, Alexis Quement, Bruno Baron Picdi, B. Rmili, A. Espinosa
Following an article presented at WiSEE 2013, this paper presents a complete wireless sensor network based on UHF RFID technology, composed of an interrogator, a sensor tag and a radiofrequency energy harvesting system used to power the tag. The complete system has been designed for space launchers in vehicle wireless sensing using common sensors such as thermocouple, thermistor, strain gauge, pressure sensor... Equipped with its energy harvesting module, each sensor tag is able to acquire and transmit measurements at a distance of 5m from the interrogator without use of any kind of battery. Based on ISO/IEC 18000-63 standard, the specific interrogator benefits of a hardware design adapted to launcher environment, and a specific firmware made to boost the communication speed.
继WiSEE 2013上发表的一篇文章之后,本文提出了一个基于UHF RFID技术的完整无线传感器网络,该网络由询问器、传感器标签和用于为标签供电的射频能量收集系统组成。完整的系统已设计用于空间发射器在车载无线传感使用常见的传感器,如热电偶,热敏电阻,应变计,压力传感器…配备能量收集模块,每个传感器标签都能够在距离询问器5米的距离内获取和传输测量数据,而无需使用任何类型的电池。基于ISO/IEC 18000-63标准的特殊询问器,具有适应启动环境的硬件设计和提高通信速度的特定固件。
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引用次数: 1
Practical application of the Optical Wireless communication technology (OWLS) in extreme environments 光无线通信技术(owl)在极端环境中的实际应用
I. Arruego, Joaquín Rivas-Abalo, J. Martinez-Oter, A. Martín-Ortega, V. Apéstigue, J. Martín, J. J. Jiménez, F. J. Álvarez, M. González-Guerrero, J. Dominguez
Since 2000, the Spanish National Institute for Aerospace Technique (INTA) has been developing the so-called OWLS technology (Optical Wireless Links for intra-Spacecraft communications). After a number of ground-demonstrations, technological developments, and in-orbit experiments, the time was ripe for a new step: the transition from the experimental to the “platform” technology. This is where the highest TRL has been achieved. OWLS has been recently applied to (A) the On Board Data Handling subsystem of OPTOS, the first fully wireless satellite, and (B) addressing the communication challenge between a sensor and a meteorological station on the Martian surface, within the Mars MetNet Precursor Mission.
自2000年以来,西班牙国家航空航天技术研究所(INTA)一直在开发所谓的owl技术(用于航天器内通信的光学无线链路)。经过一系列的地面演示、技术发展和在轨实验,迈出新一步的时机已经成熟:从实验技术过渡到“平台”技术。这是达到最高TRL的地方。owl最近已应用于(A)第一颗全无线卫星OPTOS的机载数据处理子系统,以及(B)在火星MetNet前体任务中解决火星表面传感器和气象站之间的通信挑战。
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引用次数: 3
Employing phase-conjugation antenna array to beam microwave power from satellite to earth 采用相位共轭天线阵将微波功率从卫星发射到地球
Xin Wang, Xinbin Hou, Li Wang, Mingyu Lu
This paper conducts theoretical study on employing phase-conjugation antenna array to beam microwave power from satellite to earth in the context of space solar power (SSP) applications. Our analysis reveals that, the phase-conjugation array must have aperture dimension greater than 1 km × 1 km in order to be applicable to practical SSP systems. Moreover, antenna array with such a large size does not behave as a conventional phased array, in that the power receiver on earth resides in the array's Fresnel region rather than far-field region.
本文在空间太阳能应用的背景下,对利用相位共轭天线阵从卫星向地球发射微波功率进行了理论研究。分析表明,相位共轭阵列孔径尺寸必须大于1 km × 1 km,才能适用于实际的SSP系统。此外,如此大尺寸的天线阵的性能与传统相控阵不同,因为地面上的功率接收器位于阵列的菲涅耳区,而不是远场区。
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引用次数: 5
Single number Life Cycle Assessment of space based solar power 空间太阳能发电的单数字生命周期评估
Joshua Gigantino
Competitive single-number Life Cycle Assessment is performed between existing and near-term electrical power plants at the infrastructure level. The focus is on an alternative to current electrical power production in the US in the form of Earth-orbiting Solar Power Satellites Two. This modernized SPS2 theoretical architecture is compared to Combined Cycle Natural Gas and terrestrial solar photovoltaic fields at 5GW capacity as delivered on-site. The SPS2 configuration presented is a modest, research-driven modification to a standard model that assumes medium-high technological readiness levels for equipment and employs predicted launch costs and capacity.
在基础设施层面对现有电厂和近期电厂进行竞争性单号生命周期评估。重点是寻找一种替代目前美国电力生产的方式,即地球轨道太阳能卫星2号。这种现代化的SPS2理论架构与现场交付的5GW容量的联合循环天然气和陆地太阳能光伏电站进行了比较。SPS2配置是对标准模型的一个适度的、研究驱动的修改,该模型假设设备的中高技术准备水平,并采用预测的发射成本和能力。
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引用次数: 2
Simulation and experiments of ultra-wideband radio propagation within closed boxes for replacing wired interface buses in spacecrafts 航天器中替代有线接口总线的封闭盒内超宽带无线电传播模拟与实验
Tsubasa Matsushita, A. Tomiki, Takehiko Kobayashi
Ultra-wideband (UWB) signal propagation was simulated and experimented within closed boxes with various inner volume, with a view to replace (at least partly) wired onboard data buses with wireless communications. Since multipaths depend on inner volume, it is necessary to evaluate the propagation characteristics depending on volume. Frequency-domain responses (from 3.1 to 10.6 GHz) in some closed boxes emulating a small scientific satellite were simulated and measured with a vector network analyzer. The spatial distribution of UWB propagation and its parameters were derived from the measurements. The propagation gains did not apparently depend on the inner volume. On the other hand, delay spreads were found increase with the volume.
超宽带(UWB)信号传播在具有不同内部体积的封闭盒子中进行了模拟和实验,以期用无线通信取代(至少部分)有线机载数据总线。由于多路径依赖于内部卷,因此有必要根据卷来评估传播特性。利用矢量网络分析仪对模拟小型科学卫星的封闭箱体(3.1 ~ 10.6 GHz)的频域响应进行了仿真和测量。通过测量得到了超宽带传播的空间分布及其参数。传播增益显然不依赖于内部体积。另一方面,延迟差随着音量的增大而增大。
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引用次数: 1
Carrier synchronization in distributed MIMO satellite links 分布式MIMO卫星链路中的载波同步
P. Savazzi, A. Vizziello
Deep space communications could be advantageously accomplished by using distributed multiple-input, multiple-output (DMIMO) satellite links, as it has been outlined in the recent literature. One of the most critical issues is related to synchronizing both the carrier phase and frequency, affected by Doppler shift and frequency offset at local oscillators. In this work a solution for intermittent carrier and phase synchronization is proposed, considering a baseband scheme which is suitable for both software defined radio (SDR) platforms and hybrid analog-digital higher data rate systems.
深空通信可以通过使用分布式多输入多输出(DMIMO)卫星链路来实现,正如最近的文献所概述的那样。最关键的问题之一是同步载波相位和频率,受多普勒频移和频偏在本振的影响。本文提出了一种间歇载波和相位同步的解决方案,考虑了一种既适用于软件定义无线电(SDR)平台又适用于高数据速率模数混合系统的基带方案。
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引用次数: 5
An integrated remote monitoring system for impact responses of aerospace structures 航天结构冲击响应综合远程监测系统
Sayan Roy, B. Braaten, Mijia Yang
A Structural Health Monitoring system to detect and identify accidental impact on the surface of any aerospace structure is developed and presented in this paper. Specifically, during an event of impact, a Non Destructive Damage Assessment & Location Estimation is incorporated to estimate the coordinates of the impact from an array of sensor information. A wireless communication system is also proposed here for transmitting the sensor information to any remote site for monitoring purpose. The proposed communication system is integrated on a prototype surface and tested for an in-lab environment. It is shown to be capable of transmitting location, time and magnitude information to a remote location in real-time.
本文开发并介绍了一种结构健康监测系统,用于检测和识别任何航天结构表面的意外撞击。具体来说,在撞击事件中,非破坏性损伤评估和位置估计被纳入到从一系列传感器信息中估计撞击的坐标。本文还提出了一种无线通信系统,用于将传感器信息传输到任何远程站点进行监测。所提出的通信系统集成在一个原型表面上,并在实验室环境中进行了测试。它能够将位置、时间和震级信息实时传输到远程位置。
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引用次数: 0
Preliminary results of an evolutionary approach towards Contact Plan design for satellite DTNs 卫星ddn接触计划设计演化方法的初步结果
J. Fraire, P. Madoery, J. Finochietto, G. Leguizamón
Delay and disruption tolerant networks (DTNs) are becoming an appealing solution for extending Internet boundaries so as to embrace disruptive communications. In particular, if node trajectory and orientation can be predicted as in satellite networks, routing schemes can take advantage of the a-priori knowledge of a contact plan comprising the forthcoming communications opportunities. However, the design of such a plan need to consider both available spacecraft resources and the expected traffic which is largely foreseeable in space applications. In this context, the existing Traffic-Aware Contact Plan (TACP) procedure exploits this properties, but the computation complexity of its theoretical formulation results prohibitive for real satellite applications. As a result, we propose CPD-EA: a genetic algorithm to provide sub-optimal yet efficient and implementable contact plans in reasonable time. In particular, we describe the algorithm strategies and evaluate its preliminary performance in a realistic Low Earth Orbit (LEO) scenario demonstrating it usefulness for planning future DTN-based satellite networks.
延迟和中断容忍网络(dtn)正在成为扩展互联网边界以接受中断通信的一种有吸引力的解决方案。特别是,如果节点轨迹和方向可以像卫星网络一样预测,路由方案可以利用包含即将到来的通信机会的接触计划的先验知识。然而,这种计划的设计需要同时考虑可用的航天器资源和在空间应用中基本上可以预见的预期流量。在这种情况下,现有的交通感知接触计划(TACP)程序利用了这一特性,但其理论公式的计算复杂性使其无法用于实际卫星应用。因此,我们提出CPD-EA:一种遗传算法,在合理的时间内提供次优但有效且可实施的接触计划。特别是,我们描述了算法策略,并在现实的低地球轨道(LEO)场景中评估了其初步性能,证明了它对规划未来基于dtn的卫星网络的有用性。
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引用次数: 4
Weighted OFDMA time-frequency synchronization for space solar power LEO satellites networks: Performance and cost analysis 空间太阳能低轨卫星网络加权OFDMA时频同步:性能与成本分析
M. Jamalabdollahi, S. Zekavat
This paper introduces a novel time and frequency synchronization technique for space solar power (SSP) satellite networks accomplished by weighted OFDMA sub-carrier training signal scheme. Exploiting OFDMA sub-carriers allows controlling the training signal bandwidth, which reduces the signal dispersion effects imposed by atmospheric layers. Here, we propose the procedure of estimating the weights for each OFDMA subcarrier that optimize an objective function key to the coarse time synchronization. Once time synchronization is complete, the carrier frequency offset that is due to the Doppler effect due to the movement of satellites is estimated exploiting the recursive least square (RLS) algorithm considering unknown channel impulse response (CIR). Analytical and simulation results confirm that the proposed scheme attains fast convergence, high stability, and ideal performances when compared to the relevant Cramer-Rao lower bounds in all ranges of signal-to-noise ratio.
介绍了一种利用加权OFDMA子载波训练信号实现空间太阳能卫星网络时频同步的新技术。利用OFDMA子载波可以控制训练信号带宽,从而减少了由大气层施加的信号色散效应。在这里,我们提出了估计每个OFDMA子载波的权值的方法,以优化粗时间同步的关键目标函数。一旦时间同步完成,利用考虑未知信道脉冲响应(CIR)的递推最小二乘(RLS)算法估计由卫星运动引起的多普勒效应引起的载波频率偏移。分析和仿真结果表明,与相关的Cramer-Rao下界相比,该方案在所有信噪比范围内均具有较快的收敛性、较高的稳定性和理想的性能。
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引用次数: 0
期刊
2015 IEEE International Conference on Wireless for Space and Extreme Environments (WiSEE)
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