
[通信][航] 通信卫星
And UAV may partially replace the low-earth satellite and telecommunication satellite in some fields.
它可以部分替代用于商业、环保、军事、科研的低轨道卫星和远程通信太空卫星。
In 2005, ChinaSat 9direct broadcast satellite and ChinaSat 6B telecommunication satellite projects were approved by the State Council.
2005年,“9号”直播卫星和“中星6B”通信广播卫星先后经*********批准立项建设。
This paper briefly describes basic demand of mobile telecommunication satellite market in China.
概要介绍了中国移动卫星通信市场的基本需求;
A design scheme about electronic map applied in railway Electronic Map for Automatic Train Position Reporting System based on mobile satellite telecommunication, was introduced.
针对基于移动卫星通信的列车自动报点系统,提出了一种电子地图设计方案。
In satellite telecommunication, a downlink is the link from a satellite down to one or more ground stations or receivers, and an uplink is the link from a ground station up to a satellite.
在卫星通讯中,下行是指从卫星向下连接一个或多个地面站或接收器,上行是指从地面站向上连接到卫星。
The volume of telecommunication traffic through a satellite depends on the number of ground stations it can reach, and its capacity.
卫星电信传播的容量取决于它能到达的地面站的数量和它的容量。
Application of modern electronic technology in meteorological field of China is summarized, and is discussed in meteorological telecommunication, computer, meteorological satellite and weather radar.
本文对现代电子技术在我国气象业务中的应用进行了概述。
Introduces ALOHA access protocol, ARQ technology, contention resolution, Quasi-realtime telecommunication based on single LEO satellite and MAC frame structure.
介绍了ALOHA多址接入技术,讨论了自动重传控制、冲突解决,基于单星的准实时通信以及MAC层帧格式的问题。
Attendees with China Transport Telecommunication and Information Center believe that the marine satellite phone is not feasible for its expensive price and high capacity.
但中国交通通信中心的与会专家认为,这种海事电话不可能向全体旅客提供,“一是代价昂贵,二是缺乏庞大容量。”
Programme Comments: My main interest is in telecommunication, so I prefer e items on satellite broadcasting and shortwave receiver reviews.
节目建议:我主要是对广播通信感兴趣,我特别喜欢有关卫星广播和介绍短波接收机方面的内容。
Telecommunication: A number of telecommunication networks as optical fiber, digital microwave, satellite, program control switching, data and multimedia cover the whole zone.
通讯:光纤、数字微波、卫星、程控交换、数据与多媒体等多种通信网络覆盖全区。
Another important use of telecommunication satellites was demonstrated in 1974 when the Teacher in Sky satellite transmitted educational programs to classes in remote areas of the United States.
1974年,美国“空中教师”卫星把教育节目传送到了偏远地区的教室,这说明了通信卫星的另一个重要用途。
It is the general planner and designer of TT\u0026C , telecommunication, command, monitor and display systems being used in Jiuquan and Xichang Satellite Lauch Centres, and Xian Satellite Control Centre.
它是中国航天测控网规划和总体设计单位,也是中国专门开展航天测控通信体制、方法研究和专题研究的科研单位。
It is also a pivot of telecommunication of the country, with one third of foreign communications transmitted by on-surface satellite stations and submarine cables.
上海是国内、国际通信枢纽之一,全国对外通讯中有三分之一通过上海卫星地面站和中日海底电缆传输。
He lifted sanctions to allow U. S. telecommunication companies the chance to apply for business licenses in Cuba, encouraging cell phone, Internet, radio and satellite television technologies there.
他允许美国电信公司在古巴申请营业执照,并鼓励手机、网络、广播和卫星电视等新兴科技在古巴的普及应用。
|communications satellite/telesat;[通信][航]通信卫星
通信卫星(telecommunication satellite)是一种通过电磁波在太空与地面之间传输信息的航天器,主要用于广播、电话、互联网数据传输等远距离通信服务。其核心功能是通过转发器接收地面信号,经放大和频率转换后重新发射至目标区域,实现跨地域或跨洋通信覆盖。
首颗通信卫星Telstar 1于1962年发射,验证了跨大西洋电视信号传输可行性。当前量子通信卫星(如中国“墨子号”)正推动下一代安全通信技术发展。
“telecommunication satellite”(通信卫星)指专门用于远距离传输信息的航天器,其主要功能是通过接收、放大并转发无线电信号,实现全球或区域范围内的通信、广播、数据传输等应用。
基本定义
通信卫星是运行在太空(如地球同步轨道、中地球轨道或低地球轨道)的人造卫星,搭载无线电转发器和天线系统,作为地面站之间的中继站,克服地理障碍,实现跨地域信号传输。
核心功能
关键技术组成
应用领域
若需更深入的工程细节(如频段划分或轨道力学公式),可进一步说明需求。
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