數字寬帶通道 的英文怎麼說

中文拼音 [shǔzìkuāndàitōngdào]
數字寬帶通道 英文
hdigital broadband channel
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 字 : Ⅰ名詞1 （文字） character; word 2 （字音） pronunciation 3 （字體） form of a written or printed ...
  • 通 : 通量詞（用於動作）
  • 道 : Ⅰ名詞（道路） road; way; route; path 2 （水流通過的途徑） channel; course 3 （方向; 方法; 道理） ...
  • 數字 : 1. （表示數目的文字; 表示數目的符號） figure; digit; numeral; character; numeric character 2. （數量） quantity; amount
  • 通道 : thoroughfare; passageway; pass; enterclose; gallery; drong; tunnel; avenue; alure; way; row; key ...
  1. Digital speech technology has been widely used in many fields of communications in recent years, but it is just at beginning to use acoustical wave to implement underwater digital speech communications, which mainly results from the bandwidth - limited underwater acoustic communications channel and its high temporal and spatial variability

    目前，數字語音技術已廣泛應用於許多通信領域，但是在水下利用聲波進行數字語音通信卻是剛剛起步的新技術，這主要是由於水聲通道有限的通信帶寬及其時變、空變等特性所決定的。
  2. A wideband digital channelized receiver design

    一種寬帶數字通道化接收機的設計
  3. The channelized digital receiver based on srd is the electronic equipment, which can be used in communication and military affairs, because of its excellence on wide band frequency coverage, digital processing, software programming, high dynamic range, receiving signal with all probability, simultaneous signal detection and so on

    基於軟體無線電思想的通道化數字接收機是一種即可用在通信領域也可用在軍事領域的電子設備，具有大帶寬、數字化、軟體化、大動態范圍、全概率接收、多信號同時處理等優點。
  4. In the new century, all of our staff are looking forward to welcome you with high quality service ! the new century hotel is located near the beautiful xuanwu lake and railway station. it is a 10 minute walk to the international exhibition center, 2 minutes to nanjing railway station, and 40 minutes driving to lukou international airport

    酒店314間套各式湖景客房，裝修豪華裝飾典雅，可收看cnn hbo家庭電影頻道衛視電影臺等35套國內國際衛星頻道，並配備vod數字點播系統及ddn寬帶網路，您可通過網路高速專線或wlan無線上網直接進入internet ，盡情享受沖浪的樂趣和網上電子商務活動的便捷。
  5. H4 digital broadband channel h

    數字寬帶通道
  6. Technical specification for broadband video conference based on time division multiplex digital channel

    基於時分復用數字通道的寬帶會議電視技術規范
  7. Because of the different context of program and channel, most of the bit - stream rates of programs video are different. when one tv station relays other ' s program, or when we convert program from hfc to vod, tcp / ip system, it is need to convert the bit - stream rate which could not meet the need of local channel

    由於節目內容不同、通道不同，數字電視系統中節目流碼率是千差萬別的，當一個電視臺轉播其它電視臺的節目之前，或者將節目轉播到點播電視系統、網路電視系統中時，如果本地通道不能滿足帶寬要求，則必需進行碼率轉換。
  8. Chapter 5 introduce the design of the fiber data transmission card bassed on pci bus, and give the debug result of wide band digital t / r module transmission channel

    第四章介紹了寬帶數字t / r組件發射通道試驗電路的fpga程序設計。第五章介紹基於pci總線的光纖數傳卡的設計以及試驗系統的測試與結果。
  9. Chapter 3 introduce the circuit design of wide band digital t / r module transmission channel. chapter 4 introduce the fpga software design of wide band digital t / r module transmission channel

    第三章介紹了寬帶數字t / r組件發射通道試驗電路的硬體設計，包括光纖介面電路、 ddws電路、正交調制電路的設計。
  10. The project is to develop the 100mhz wideband digital storage oscilloscope ( wdso ) ， typical performance character : input signal - 3db bandwidth is 100mhz, real time sampling frequency is 20msa / s, equivalent sampling frequency is 10gsa / s, resolution is 8bits, dual signal channel, and delicacy is 5mv 5v div per channel ， time sweep velocity is 2. 5ns - - 5s div 。 so the project is provided with higher performance - to - price ratio, stronger competitive capacity in market and widest applied foreground at the area of wdso

    本次課題的具體目標是實現100mhz帶寬的數字存儲示波器正樣機的研製，具體主要性能指標達到最高實時采樣率20msa / s 、等效采樣率10gsa / s 、被觀測信號3db模擬帶寬達100mhz 、采樣數字解析度8bit ；雙通道，幅值靈敏度： 5mv 5v div ，掃速2 . 5ns - - 5s div 。該方案具有較高的性價比，較強的市場競爭力和廣闊的應用前景。
  11. The project is to develop the 100mhz bandwidth, equivalent sampling frequency is 1g / sa, resolution is 8bits, dual signal channel, and delicacy is 5mv - 100v / div per channel, time sweep velocity is 20ns - - 5s / div digital storage oscilloscope ( dso ) 。 achieved equivalent sampling is innovative and main content of the project

    本設計的具體目標是實現帶寬為100mhz ，等效采樣率為5gsa / s ，采樣數字解析度為8bit ;雙通道，幅值靈敏度為5mv 100v / div ，時基為: 10ns 5s的手持式數字存儲示波器.等效采樣的實現是本設計的創新點和主要研究內容
  12. In wireless digital transmissions, due to the delay dispersion of the transmitted symbols and the limitation of channel bandwidth, the channel may induce inter - symbol interference ( isi ), which results the frequency selective fading

    在無線數字傳輸中，由於時延擴展和通道帶寬限制，引起碼間串擾，產生頻率選擇性衰落。
  13. In digital microwave communication, inter - symbol interference ( isi ) is inevitable because of multi - path fading, finiteness of channel bandwidth and faultiness of channel

    在數字微波通信中，多徑效應和通道帶寬的有限性以及通道特性的不完善導致數據傳輸時不可避免地產生碼間干擾（ isi ） 。
  14. We will discuss the construction of a digital transmission system with high bandwidth efficiency and good error rate performance. in the condition of 25khz wireless channel

    本文主要討論在25khz通道條件下建立一個具有高帶寬效率和較好誤碼性能的無線數字傳輸系統。
  15. So it is necessary to add an equalizer to the physical receiver. it can enhance the adaptability of broadband digital transmission apparatus and effectively decrease the performance requirement of channel and receiver, accordingly can reduce cost

    因此，在實際的通信接收設備中加入均衡器是非常必要的，它可以提高寬帶數字傳輸設備的適應能力，有效降低通道、通道和接收設備的性能要求，節約成本。
  16. The research in software radio is not more than ten years, but has made a great many fruits, but it is too little to set up an integrated theory system, and software radio includes many areas such as modern communication system ( which includes modem source / channel encoding and decoding, equalization, encrypt and decrypt and so on ), wideband antenna theory, digital signal process, microelectronics, computer and so on. this thesis mainly does research for modem in modem communication

    軟體無線電經過不到10年的研究，盡管取得了很多成果，但是對于建立一套完整的理論體系來說，還遠遠不夠，況且軟體無線電涉及的領域多、面廣、發展快，如現代通信理論（含調制解調、信源通道編解碼、均衡、加密解密等） 、寬帶天線理論、數字信號處理、微電子、計算機等。
  17. This dissertation discuss the key technology of wide band digital t / r module, including : architecture of the wide band digital t / r module ; wide band signal generating technology based on ddws ; using fiber technology to transmit data between radar center and t / r moudle. after studying the digtal t / r module technology over the world, this dissertation present a scheme of l band ( 1300mhz ) wide band ( b = 100mhz ) digital t / r module, and design a test board to verify transmitting technology of wide band digital t / r module, it works at l band. it use gigabit fiber components to transmit data between radar center and t / r module, use ddws and quadrature modulate technology to generate wide band radar transmitting signal, all control signal is generated by fpga

    本文探討了寬帶數字t / r組件發射通道的關鍵技術，主要包括:數字t / r組件的體系結構、基於ddws技術的寬帶信號的產生以及數字t / r組件收發數據的光傳輸技術。本文在深入研究了國內外數字t / r組件技術的基礎上，提出了一種l波段（ 1300mhz ）寬帶（ b = 100mhz ）數字t / r組件的原理框圖，並且設計了試驗板來驗證寬帶數字t / r組件發射通道技術。該試驗板採用千兆比特光纖技術實現寬帶數字t / r組件與雷達主機的數據傳輸，採用ddws加正交調制技術產生寬帶雷達信號，採用一片fpga完成整個組件的控制。
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