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36991.集成无人机行动的控制和无负载通信链路
[计算机、通信和其他电子设备制造业,信息传输、软件和信息技术服务业] [2014-03-31]
Technology for unmanned aircraft has advanced so rapidly in recent years that many new applications to public and commercial use are being proposed and implemented. In many countries, emphasis is now being placed on developing the means to allow unmanned aircraft to operate within non-segregated airspace along with commercial, cargo and other piloted and passenger-carrying aircraft.This paper provides a description of the CNPC system, an overview of NASA's CNPC project, and current results in technology assessment, air-ground propagation characterization, and supporting system studies and analyses will be presented.
关键词：通信；通信网络；地面控制；无人驾驶飞机；支撑系统；负载
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36992.分布式分离保证体系架构的监测和数据链通信性能分析
[信息传输、软件和信息技术服务业] [2014-03-31]
This study investigates the effects of two technical enablers: Automatic Dependent Surveillance - Broadcast (ADS-B) and digital datalink communication, of the Federal Aviation Administration s Next Generation Air Transportation System (NextGen) under two separation assurance (SA) system architectures: ground-based SA and airborne SA, on overall separation assurance performance. Datalink performance such as successful reception probability in both surveillance and communication messages, and surveillance accuracy are examined in various operational conditions. Required SA performance is evaluated as a function of subsystem performance, using availability, continuity, and integrity metrics to establish overall required separation assurance performance, under normal and off-nominal conditions.
关键词：通信；脉冲通信；广播；可靠性分析；数据链
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36993.连接操作和战略通信架构：集成小型无人机系统作为机载战术中继通信垂直节点
[计算机、通信和其他电子设备制造业,信息传输、软件和信息技术服务业] [2014-03-31]
Through the efforts of this thesis, the goal is to extend and enhance beyond line of sight (BLOS) and on-the-move communications at the small unit level. The findings provide face validation that Small-UAS equipped with a communication payload can provide these services that enhance voice transmissions, and thus, enable TCP/IP data transfer in communication degraded environments without interfering with the Small-UAS primary ISR function or airworthiness. Future efforts in this line of inquiry may also inform the use of multiple Small-UAS to extend the network and autonomous operations, and perhaps, eliminate the requirement for a ground Small-UAS operator.
关键词：通信；通信网络；无线电中继系统；数据传输系统；小型无人机系统
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36994.电信科学研究所FY2011技术进展报告
[信息传输、软件和信息技术服务业,计算机、通信和其他电子设备制造业] [2014-03-31]
ITS performs basic research in radio science that provides the technical foundation for NTIAs policy development and spectrum management activities. ITS research enhances scientific knowledge and understanding in cutting-edge areas of telecommunications technology.Through leadership roles in various working groups, ITS helps to influence development of international standards and policies to support the full and fair competitiveness of the U.S. communications and information technology sectors. ITS research helps to drive innovation and contribute to the development of communications and broadband policies that enable a robust telecommunication infrastructure, ensure system integrity, support e-commerce, and protect an open global Internet.
关键词：通信；通信卫星；通信网络；系统分析；无线电通信；技术评估
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36995.双频(无线电/光学)航天器通信的并行系统工程和风险降低
[信息传输、软件和信息技术服务业,计算机、通信和其他电子设备制造业,铁路、船舶、航空航天和其他运输设备制造业] [2014-03-31]
This paper describes a system engineering approach to examining the potential for combining elements of a deep-space RF and optical communications payload, for the purpose of reducing the size, weight and power burden on the spacecraft and the mission. Figures of merit and analytical methodologies are discussed to conduct trade studies, and several potential technology integration strategies are presented. Finally, the NASA Integrated Radio and Optical Communications (iROC) project is described, which directly addresses the combined RF and optical approach.
关键词：通信；航天器通信；无线电通信；光学通信；并行工程
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36996.空间软件定义的无线电的特性和可重用研究
[信息传输、软件和信息技术服务业] [2014-03-31]
关键词：通信；空间通信；软件重用；空间站；系统集成
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36997.通过稀疏信道感应、编码和导航支持推进自主分布式网络水声通信
[信息传输、软件和信息技术服务业] [2014-03-31]
The long-term goal is to significantly advance underwater acoustic communication technologies for autonomous distributed underwater networks, through innovative signal processing, coding, and navigation algorithms. Providing highly reliable and high data rate communication links will be critical towards the development of a new era of underwater distributed networks.We have three objectives in this project: (1) Advanced communication techniques of sparse channel sensing and nonbinary LDPC coding; (2) High-resolution ranging and navigation; (3) Testbed development and medium access control. We plan to develop a network testbed to illustrate the cooperative networking scenario.
关键词：通信；水声学；水通信；信号处理；稀疏信道感应；编码；导航
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36998.月球通信卫星和服务器的设计和实现以应对2012年SISO攻击波
[计算机、通信和其他电子设备制造业,铁路、船舶、航空航天和其他运输设备制造业,信息传输、软件和信息技术服务业] [2014-03-31]
Last year, the Simulation Interoperability Standards Organization (SISO) inaugurated the now annual High Level Architecture (HLA) Smackdown at the Spring Simulation Interoperability Workshop (SIW). A primary objective of the Smackdown event is to provide college students with hands-on experience in the High Level Architecture (HLA). The University of Alabama in Huntsville (UAHuntsville) fielded teams in 2011 and 2012.This paper concentrates on the first two federates by describing the functions, algorithms, the modular FOM, experiences, lessons learned and recommendations for future Smackdown events.
关键词：通信；互操作性；通信卫星；月球卫星；算法设计；无线电通信；客户服务器
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36999.2014年1季度我国通信行业政策环境分析
[信息传输、软件和信息技术服务业,计算机、通信和其他电子设备制造业] [2014-03-28]
一、工信部、上海市人民政府发布《关于中国（上海）自由贸易试验区进一步对外开放增值电信业务的意见》；二、工信部发改委印发《创建“宽带中国”示范城市（城市群）工作管理办法》；三、工业和信息化部关于加快我国手机行业品牌建设的指导意见。
关键词：电信业务；增值；宽带中国；手机；行业品牌
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37000.全球汽车泊车辅助系统市场报告（2014-2018年）
[信息传输、软件和信息技术服务业,汽车制造业] [2014-03-27]
Park assist systems are automotive systems that aid automobile drivers in parking a vehicle. The system, which is integrated into an automobile, provides improved parking management with a safe human-machine interface. Park assist systems are designed to avoid collisions in parking areas by focusing on the major causes of collisions such as drivers' errors, distractions, and space restrictions. The systems are highly efficient in warning a driver whenever required. The purpose of the deployment of park assist systems in vehicles is to enhance the driver's efficiency in parking, thereby providing a better user experience.
关键词：泊车辅助系统；汽车系统；停车管理；安全；人机界面
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