窄帶數據 的英文怎麼說

中文拼音 [zhǎidàishǔjù]
窄帶數據 英文
narrow band data
  • 窄 : 形容詞1. （橫的距離小） narrow 2. （心胸不開朗; 氣量小） petty; narrow 3. （不寬裕） hard up; badly off; short of
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 據 : 據Ⅰ動詞1 （占據） occupy; seize 2 （憑借; 依靠） rely on; depend on Ⅱ介詞（按照; 依據） according...
  • 數據 : data; record; information
  1. The signal format of gps is analyzed, the principle models and mathematical models are established, the ber performance is analyzed in a channel interfered with wide - bandwidth awgn, narrow - bandwidth awgn, transmitted signal, single - tone signal respectively. based on the results above interference methods are discussed and simulated. then the performance of code acquisition and code trace of a digital gps receiver are discussed. the modem of linkl 1 and link4a are modeled and their ber performances are analyzed and simulated in channel s interfered with awgn, single - tone signal and multi - tone signal respectively

    建立了jtids的收發終端的數學模型，分析它在噪聲干擾、相關干擾、互相關干擾下的誤碼性能，提出較佳的干擾方法和干擾碼型，並進行模擬模擬；分析了gps的信號格式，建立了gps的原理框圖模型、信號數學模型，並對其在寬帶噪聲干擾、窄帶噪聲干擾、轉發干擾、單頻干擾等情形下的誤碼性能進行了分析比較，提出相對較佳的干擾方法，並做了計算機模擬，針對一數字式gps接收機中擴頻碼捕獲與跟蹤環的特性進行分析；建立了link11和link4a數據鏈調制解調數學模型，對它們在噪聲干擾、單音干擾、多音干擾等下的誤碼性能進行分析，最後對干擾情況進行了模擬模擬。
  2. Tms320vc5402 is a fixed - point digital signal processor, made by texas instruments incorporated, which is 16 - bit word length. vc5402 has enhanced harvard architecture built around one program bus, three data buses, and four address buses for increased performance and versatility

    另外，採用mcs - 51系列cpu作為採集處理卡板載mcu也存在一些比較嚴重的問題，如cpu的指令執行速度慢，總線帶寬窄等缺點，不能完成數據的高速處理。
  3. It is a novel short - distance wireless communication technique, in which data are transferred using non - sinusoidal pulses with very short duration, so it is fit for using in indoor environments which is a typical multipath environment. and it can be coexisted with the existing wireless communication systems at the same frequency band

    超寬帶通信系統利用納秒至皮秒級的非正弦波窄脈沖傳輸數據，非常適合作為城區及室內密集多徑環境下的應用，並且能夠與現有的傳統窄帶系統共存。
  4. Today in information age, deepenning gradually of technical application of broadband, broadband impacts tremendously on the original billing mode. the single " month - rent " and accounting on time under the narrowband network conditions can not meet the real application demands of the broadband network because of its abundant network content and enormous data flow

    在信息時代的今天，伴隨寬帶技術應用的逐步深入，寬帶對原有的網路計費模式產生了巨大的沖擊，豐富的網路內容、巨大的數據流量使得窄帶環境下的粗放包月制和按時計費方式已經不能滿足實際的應用需求。
  5. So it can decrease the module ' s volume, lower its power consume, what ' s more, it make it possible for demodulation of other types signal such nbfm on the same platform

    這樣能夠在很大程度上使解調模塊體積縮小、功耗降低，而且便於擴展解調其它類型的信號，例如窄帶調頻、短波段數據傳輸等。
  6. Digital down - converter ( ddc ) is one of the key technologies used by sdr receiver. the ddc module is a data processing part, following the ad sampler. the main function of ddc is extracting narrow - band data from broad - band data which is digitalized by ad sampler, down - converting these data to base - band, and decreasing data rate as well

    Ddc數字下變頻器技術作為軟體無線電中的核心技術，是緊跟在ad采樣后的一個處理模塊，他的主要功能是從輸入的寬帶高速數字信號中提取所需的窄帶信號，將其下變頻為數字零中頻，並降低數據的速率。
  7. An algorithm for matching the esprit ' s estimation of two - dimensional angle by using twice svd and once schur is proposed. using two row uniformity sensor - arrays and adding one sensor, the algorithm decomposes the array twice and exploits rotational invariance properties of signal space, so that both angles may be computed via matrix pencil method, and these estimates are automatically paired. simulation results are presented to verify the efficacy of the proposed algorithm

    首先針對esprit演算法對窄帶源進行二維doa估計存在測向冗餘的情況，提出了一種改進演算法，該演算法利用子陣信號數據矩陣中包含的信號空間的旋轉不變性質，藉助于矩陣束方法求解出信號的二維到達角，並且利用兩次奇異值及一次schur分解從而實現了esprit二維doa估計參量的自動配對； 2
  8. Media gatewaytdmatm integrated access equipment is the main way of narrow band and data private line access. users may access fixed telephone network and dial - up access braodband man through twisted cable ; users may access broadband data network through adsl or ddn, or fr, etc ; mobile comminication users may access 2g or 3g mobile communication network through base station equipment and wireless gateway

    媒體網關tdmatm綜合接入設備主要是窄帶和數據專線接入方式，用戶通過雙絞線可以接入固定電話網以及撥號接入寬帶ip城域網；用戶通過adsl或ddn 、 fr等可接入寬帶基礎數據網；移動通信用戶通過基站設備和無線網關可接入第二代或第三代移動通信網。
  9. In this topic, an adc circuit and data - storage system for all digital ultra - wideband receiver was designed, and the ultra - wideband narrow pulse signal that is received is digitalized, using an ultra - high - speed a / d convertor

    本課題設計了一個全數字化超寬帶接收器的adc電路及數據存儲系統。利用一個超高速的ad轉換器，對超寬帶窄脈沖信號進行數字化。
  10. As regards the development of the service layer, shanghai telecom s objective is to transit gradually from providing narrow - band data service as the dominant service to providing broadband data service as the dominant service. 6

    今後上海電信在業務層上的建設目標是：從以窄帶數據業務為主、兼顧寬帶數據業務，逐步發展為寬帶、窄帶業務並舉，最後達到以寬帶數據業務為主，兼顧窄帶業務。
  11. An adapting modulation scheme which behave spectral energy centralized, frequency spectrum narrow become very important

    數據傳輸中，需要頻譜能量集中，頻帶較窄的調制方式，以及解決干擾問題。
  12. The latter primarily improves the transmission distance and reliability by selecting the repeater automatically. the frequency domain auto - adaptatation filter algorithm is deduced and reliabity by selecting the repeater automatically. the frequency domain auto - adaptaion filter algorithm is deduced and a method of frequency domain algorithm to restrain the marrow band interference is given on the foundation of the time domain minimum mean square error auto - adaptation filter. then the meter reading system to can learn the power network structure and automatically create linked path by using neural networks auto - study ability and analyzing the reading data

    後者主要是對中繼節點的自動選擇，以提高信息的傳輸距離與可靠性。針對電力線擴頻通信通道的特點，在時域最小均方誤差自適應濾波演算法的基礎上，推導了頻域自適應濾波演算法，並提出了頻域演算法抑制窄帶干擾的具體方法。運用神經網路的自學習方法，通過對抄讀數據進行分析，使抄表系統感知電網拓撲結構，自動建立中繼路徑。
  13. At the same time realizes data collection, data analysis, series of parameters setting, narrow band warning, axis orbit analysis and real time or historical data transport etc. 2 ) precise analysis and diagnosis through lan

    並能在監測的同時實現實時信號採集、分析處理、組態設置、窄帶報警、軸心軌跡以及實時/歷史數據遠程傳輸等功能； 2 、具有網路化精密分析診斷功能。
  14. Work is also under way on new narrowband systems, which are used for voice or low - data rate communications by soldiers who are able to carry only a limited amount of gear into the field

    人們也正在研究新的窄帶系統，在戰場上攜帶裝備能力有限的士兵可利用這種系統進行語音或低數據率通訊。
  15. We designed a wireless asymmetric physical layer link model with a direct sequence spread spectrum system as a transmitted reference. uplink and downlink are both one - way links connected by an ip tunneling. uplink is consisted with the narrowband radio data link of the warfighter information networks ( win )

    研究了無線非對稱鏈路，提出了一種用參考法直接序列擴頻（ dsss ）實現的無線非對稱數據傳輸的物理層鏈路模型：利用現有戰斗員信息網電臺的窄帶數據鏈作為上行通道，通過ip隧道技術保證單向鏈路的連通性。
  16. According to the ideology of software radio theory, the realization of intermediate frequency ( if ) digitalized direct sequence spread spectrum ( dsss ) receiver is one of the focuses in dsss communications study. it is of great value to deploy narrowband interference ( nbi ) suppression techniques in if digitalized dsss receiver for commercial and military applications

    根據中頻數字化這一軟體無線電思想實現擴頻接收機是目前擴頻通信研究的熱點，在中頻數字化擴頻接收機體系結構內研究窄帶干擾抑制技術具有重要的商業和軍事應用價值。
  17. It 1ocated on the border of atm / ip network, functions as a bridge between data and voice, narrowband and broadband, it also vith responsib1e for a11 kinds of service rea1izatioll cooperated ith mgc

    該產品位於atm ip網路的前端，起到了語音向數據、窄帶向寬帶過渡的橋梁作用。它與mgc配合完成各種業務的控制和管理，可滿足目前窄帶通信網向統一的寬帶通信網平滑過渡的要求。
  18. The technology of very low bit rate for hf ( high frequency ) communication means that, one technology of ecm ( electronic counter measures ) resistant communication is developed for low bit data message exchange in the time of battle which data communication is destroyed by electronic disturber. it is regarded by armies in the battle of information, because that it can overcome the very low snr ( signal noise ratio ), very high narrow - band interference and multipath with maxium delay of fifty millisecond

    短波最低限度通信技術是在戰時強電磁干擾情況下能實現保證最低限度的數據報通信的一種抗干擾通信技術。由於其能有效的克服極低信噪比、較強的窄帶干擾和幾十毫秒的多徑，在信息戰中受到各軍高度重視。
  19. Their input capabilities are limited to a few buttons or numbers, or entering data takes extra time, as happens with a personal digital assistant ' s ( pda ) handwriting - recognition capabilities. they have less processing power and memory to work with, and their wireless network connections have less bandwidth and are slower than those of computers hard - wired to fast lans

    它們的輸入功能局限於幾個按鍵或數字鍵，或者像個人數字助理（ pda ）手寫體識別功能那樣，輸入數據要花很長時間，它們所擁有的工作處理能力和內存都較校比起那些通過計算機硬連線與快速局域網相連的連接，它們的無線網路連接帶寬較窄，速度也較慢。
  20. The network in the world comes from arpanet in 1969. serveral years later, the network has changed greatly. more and more network protocols had been put into use. therefore, iso established the unite standard of protocol - osi. however, the industrial standard is tcp / ip which is designed initially for the transmission of narrowband data. with the development of the network, many new applications are limited by using the tcp / ip protocols

    但是真正推動網路發展的事實上的工業標準卻是tcp / ip協議簇，它最初是為窄帶數據傳送設計的。隨著時代的發展，使用tcp / ip協議簇的網路在新的應用面前呈現出越來越多的局限。
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