欢迎访问行业研究报告数据库

报告分类

重点报告推荐

当前位置:首页 > 行业导航

找到报告 2172 篇 当前为第 185 页 共 218

所属行业:铁路、船舶、航空航天和其他运输设备制造业

  • 1841.环球飞行管理系统市场报告(2014-2018年)

    [信息传输、软件和信息技术服务业,铁路、船舶、航空航天和其他运输设备制造业] [2014-04-19]

    The electronic systems used in spacecraft, aircraft, and artificial satellites are known as avionics systems. Avionics systems include the flight management system, navigation systems, and communication systems. A flight management system is a device that performs the work that was originally carried out by navigators and flight engineers. The prime function of flight management systems is in-flight handling of the flight plan. The systems have various sensors that help the devices locate the position of the aircraft and guide the pilot according to the flight plan.
    关键词:航天器;飞机;人造卫星;航空电子设备系统;飞行管理系统;导航系统;通信系统
  • 1842.全球航空航天复合材料市场报告(2014-2018年)

    [铁路、船舶、航空航天和其他运输设备制造业] [2014-04-15]

    This report covers the present scenario and the growth prospects of the Global Aerospace Composites market for the period 2014–2018. The report considers 2013 as the base year and provides data for the trailing 12 months. The market size was calculated on the basis of the total global revenue generated from the shipment of composite materials for the Global Aerospace market. The report also presents the vendor landscape and a corresponding detailed analysis of the top four vendors in the Global Aerospace Composites market. In addition, it discusses the major drivers that influence the growth of the Global Aerospace Composites market. It also outlines the challenges faced by the vendors and the market at large, as well as the key trends that are emerging in the market.
    关键词:复合材料;飞机制造;高的强度;重量比;抗疲劳耐力;耐腐蚀性;耐磨性;展性
  • 1843.美国宇航局空间通信网络集成

    [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] [2014-04-03]

    Salient features of the Integrated Network include (a) a central system element that performs service management functions and user mission interfaces for service requests; (b) a set of common service execution equipment deployed at the all stations that provides return, forward, and radiometric data processing and delivery capabilities; (c) the network monitor and control operations for the entire integrated network are conducted remotely and centrally at a prime-shift site and rotating among three sites globally (a follow-the-sun approach); (d) the common network monitor and control software deployed at all three network elements that supports the follow-the-sun operations.
    关键词:通信;宇宙通信;网络控制;数据处理;成本
  • 1844.北极地区通信小卫星(ARC-Sat)

    [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] [2014-04-03]

    Organizations are unable to support near‐ and mid‐term Arctic operations to include: Humanitarian Response, Environmental Response, International Search & Rescue (SAR), and Counter‐Trafficking (to include WMD).
    关键词:通信;小卫星技术;通信卫星;北极地区
  • 1845.机场移动航空通信系统干扰对机场的辐射模式特性的影响

    [铁路、船舶、航空航天和其他运输设备制造业,计算机、通信和其他电子设备制造业] [2014-04-03]

    In this study, the cumulative interference power distribution at low earth orbit from AeroMACS transmitters at the 497 major airports in the contiguous United States was simulated with the Visualyse Professional software. The dependence of the interference power on the number of antenna beams per airport, gain patterns, and beam direction orientations was simulated. As a function of these parameters, the simulation results are presented in terms of the limitations on transmitter power required to maintain the cumulative interference power under the established threshold.
    关键词:通信;无线辐射模式;移动通信系统;仿真
  • 1846.多次反射继电器的应用以增强机场移动航空通信系统网络的性能

    [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] [2014-04-01]

    The proposed technology, known as AeroMACS, will be used to support fixed and mobile ground to ground applications and services. This article proposes and demonstrates that IEEE 802.16j-amendment-based WiMAX is most feasible for AeroMACS applications. This amendment introduces multihop relay as an optional deployment that may be used to provide additional coverage and/or enhance the capacity of the network. Particular airport surface radio coverage situations for which IEEE 802.16-2009-WiMAX provides resolutions that are inefficient, costly, or excessively power consuming are discussed. Our initial simulation results suggest that no additional interference to MSS feeder link is caused by deployment of IEEE 802.16j-based AeroMACS.
    关键词:通信;通信网络;C波段;电信
  • 1847.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
  • 1848.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
  • 1849.全球卫星市场报告(2014-2018年)

    [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] [2014-03-26]

    A satellite is an artificial object that is placed in orbit around the earth or other planets for telecommunication purposes. Satellites are used in providing various services and products such as broadcast, trunking or VSAT services, broadband internet access, mobile voice, data, and TV services, and more recently satellite radio. The adoption of satellite technology is high in developed countries owing to the large demand for digital content. However, demand from developing countries is catching up with global demand. The Global Satellite market is expected to witness moderate growth with a CAGR of 8.05 percent during the period 2013-2018. In 2013, the Americas dominated the market , followed by the EMEA and APAC regions. The current demand for satellites is mainly for defense applications, but it is expected that the demand from the commercial sector will grow over the next few years.
    关键词:卫星;环绕地球轨道;人造物体;通信
  • 1850.全球直升机市场报告(2014-2018年)

    [铁路、船舶、航空航天和其他运输设备制造业] [2014-03-24]

    Helicopters have a significant role in the modern day aircraft fleets and these are used in a wide range of applications across various industries. One of the major reasons for the increasing demand for helicopters is their unique features such as vertical take-off and landing, and the ability to hover, and fly forward, backward, and lateral. The Civil Aviation sector and Defense sector are the major end-users of helicopters. In 2013, the Defense sector contributed the major revenue to the market.
    关键词:直升机;独特功能;垂直起飞;着陆;能力盘旋
首页  上一页  ...  180  181  182  183  184  185  186  187  188  189  ...  下一页  尾页  
© 2016 武汉世讯达文化传播有限责任公司 版权所有 技术支持:武汉中网维优
客服中心

QQ咨询


点击这里给我发消息 客服员


电话咨询


027-87841330


微信公众号




展开客服