
[通信][航] 通信衛星
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業、環保、軍事、科研的低軌道衛星和遠程通信太空衛星。
In 2005, ChinaSat 9direct broadcast satellite and ChinaSat 6B telecommunication satellite projects were approved by the State Council.
2005年,“9號”直播衛星和“中星6B”通信廣播衛星先後經*********批準立項建設。
This paper briefly describes basic demand of mobile telecommunication satellite market in China.
概要介紹了中國移動衛星通信市場的基本需求;
A design scheme about electronic map applied in railway Electronic Map for Automatic Train Position Reporting System based on mobile satellite telecommunication, was introduced.
針對基于移動衛星通信的列車自動報點系統,提出了一種電子地圖設計方案。
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.
在衛星通訊中,下行是指從衛星向下連接一個或多個地面站或接收器,上行是指從地面站向上連接到衛星。
The volume of telecommunication traffic through a satellite depends on the number of ground stations it can reach, and its capacity.
衛星電信傳播的容量取決于它能到達的地面站的數量和它的容量。
Application of modern electronic technology in meteorological field of China is summarized, and is discussed in meteorological telecommunication, computer, meteorological satellite and weather radar.
本文對現代電子技術在我國氣象業務中的應用進行了概述。
Introduces ALOHA access protocol, ARQ technology, contention resolution, Quasi-realtime telecommunication based on single LEO satellite and MAC frame structure.
介紹了ALOHA多址接入技術,讨論了自動重傳控制、沖突解決,基于單星的準實時通信以及MAC層幀格式的問題。
Attendees with China Transport Telecommunication and Information Center believe that the marine satellite phone is not feasible for its expensive price and high capacity.
但中國交通通信中心的與會專家認為,這種海事電話不可能向全體旅客提供,“一是代價昂貴,二是缺乏龐大容量。”
Programme Comments: My main interest is in telecommunication, so I prefer e items on satellite broadcasting and shortwave receiver reviews.
節目建議:我主要是對廣播通信感興趣,我特别喜歡有關衛星廣播和介紹短波接收機方面的内容。
Telecommunication: A number of telecommunication networks as optical fiber, digital microwave, satellite, program control switching, data and multimedia cover the whole zone.
通訊:光纖、數字微波、衛星、程控交換、數據與多媒體等多種通信網絡覆蓋全區。
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,美國“空中教師”衛星把教育節目傳送到了偏遠地區的教室,這說明了通信衛星的另一個重要用途。
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.
它是中國航天測控網規劃和總體設計單位,也是中國專門開展航天測控通信體制、方法研究和專題研究的科研單位。
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.
上海是國内、國際通信樞紐之一,全國對外通訊中有三分之一通過上海衛星地面站和中日海底電纜傳輸。
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.
他允許美國電信公司在古巴申請營業執照,并鼓勵手機、網絡、廣播和衛星電視等新興科技在古巴的普及應用。
|communications satellite/telesat;[通信][航]通信衛星
通信衛星(telecommunication satellite)是一種通過電磁波在太空與地面之間傳輸信息的航天器,主要用于廣播、電話、互聯網數據傳輸等遠距離通信服務。其核心功能是通過轉發器接收地面信號,經放大和頻率轉換後重新發射至目标區域,實現跨地域或跨洋通信覆蓋。
首顆通信衛星Telstar 1于1962年發射,驗證了跨大西洋電視信號傳輸可行性。當前量子通信衛星(如中國“墨子號”)正推動下一代安全通信技術發展。
“telecommunication satellite”(通信衛星)指專門用于遠距離傳輸信息的航天器,其主要功能是通過接收、放大并轉發無線電信號,實現全球或區域範圍内的通信、廣播、數據傳輸等應用。
基本定義
通信衛星是運行在太空(如地球同步軌道、中地球軌道或低地球軌道)的人造衛星,搭載無線電轉發器和天線系統,作為地面站之間的中繼站,克服地理障礙,實現跨地域信號傳輸。
核心功能
關鍵技術組成
應用領域
若需更深入的工程細節(如頻段劃分或軌道力學公式),可進一步說明需求。
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