移頻數據 的英文怎麼說

中文拼音 [yíbīnshǔjù]
移頻數據 英文
frequency shift data
  • 移 : Ⅰ動詞1. （移動） move; remove; shift 2. （改變; 變動） change; alter Ⅱ名詞（姓氏） a surname
  • 頻 : Ⅰ形容詞（次數多） frequent Ⅱ副詞（屢次） frequently; repeatedly Ⅲ名詞1 [物理學] （物體每秒鐘振動...
  • 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. Furthermore, the network technique only support the voice service cannot meet the communication requirements of people. people hope to obtain multimedia service such as packet data, video and picture phone etc besides voice service. all these need operators and researchers to look after the mobile communication scheme which optimizes spectrum efficiency and expands system capacity to accommodate more users in major metropolitan markets

    此外，僅支持語音業務的網路技術已不能滿足人們對信息交流的需求，人們希望能隨時隨地獲取除語音之外的數據、視頻和圖像等多媒體業務，這些因素都促使運營商和研究者尋求頻譜利用率更高、通信容量更大的移動通信解決方案。
  2. Digital intermediate frequency system is one of the hotspots in radio communication and military research, it provided a superexcellent way for high - speed double direction digital communication

    數字中頻系統是當前軍事與移動通信領域的研究熱點之一，它為高速雙向無線數據通信提供了思路與方案[ 1 ] 。
  3. Electronic engineering limited shanghai inge computer network department is a professional development network of high - performance video products, wireless mobile data products and provide e - commerce, enterprise information platform solutions high - tech enterprises

    上海英奇電腦電子工程有限公司網路部，是一家專業開發高性能視頻網路產品、無線移動數據產品並提供電子商務、企業信息平臺解決方案的高科技企業。
  4. Further investigated and analyzed composition structure and flow data that dsa ' s formation of image is systematic at first in this paper, carried on intact summing up to the data in the system, having given out the plan of design of high speed and large capacity data channel of digital formation of image system of x - ray ; deeper discussion of control way on sdram, give solution that many pieces of sdram works togetherses of realizing heavy capacity, designing of heavy capacity deposit board realize storing at a high speed to vision data by frame on the basis of this ; through further investigations of interface of pci bus, optimize back end state machine design and urge procedure making with lower, giving intact pci interface scheme that realize high speed dma data transmission and satisfy request of video transmitting ; further investigate the figure systematic design method of programmable logic devices, due to the difficult point of drifting about of enabled signal in fifo in common use and setting up and keeping of output signal, method has been proposed of improving stability of system making use of signal utilizing the phase locking ring in fpga to offer a lot of clocks to move thus realize coordinating the data between every module of system to transmit at a high speed by making use of fifo

    本文首先對數字減影血管造影（ dsa ）成像系統的組成結構和數據流向進行了深入研究和分析，並對系統中的數據流向進行了完整的歸納和總結，給出了x線數字成像系統中的高速大容量數據通道的設計方案；在對sdram的控制方式做了深入探討后，給出了實現大容量多條sdram共同工作的解決方案，在此基礎上設計了大容量幀存板實現對圖象數據進行高速存儲；通過對pci總線介面的深入研究，優化後端狀態機設計和低層驅動程序開發，給出了完整的pci介面方案實現高速dma數據傳輸，完全可以滿足視頻傳輸要求；深入研究了基於大規模可編程器件的數字系統設計方法，針對通用fifo使能信號漂移、輸出數據難于建立和保持等設計難點，提出了利用fpga中的鎖相環提供多個時鐘相移的信號來提高系統穩定性的解決方案，從而實現利用fifo來協調系統各模塊之間的數據高速傳輸。
  5. The videos, voices, data combined traffic and high speed data are becoming more and more predominent in the future, and how to efficiently transfer this multi - medium integrated - data is one of the researcher ' s interesting field. the cdma system, which has striking advantages of anti - multipath fading, soft capacities and large capacities over fdma and tdma systems, has been focused by all of the countries

    未來信息社會中，圖象，話音，數據相結合的多媒體業務和高速數據業務量越來越佔主要地位，如何有效地傳輸這種多媒體數據，已經成為移動通信中的研究熱點之一。擴頻技術由於具有抗多徑，軟容量和時分多址與頻分多址更大的容量和優勢，而受到各國研究者的重視。
  6. Since 90 ' s, with the rapid development in mobile communication technology and internet technology, and extensive application in mobile computer, make many mobile nodes be able to build up connections with network in the mobile process freely

    在移動計算環境中，網路具有非對稱性和頻繁斷接性，根據網路的這種特性可以由服務器把大量熱點數據組織起來，以周期性的廣播提供給移動客戶。
  7. The synchronization and replication is also an essential technology of mobile database. comparing trade distributed database environment, mobile computing environment has characteristics of high frequency disconnection, network condition diversity, network communications dissymmetry and so on

    移動計算環境與傳統的分散式計算環境相比有頻繁的斷接性、網路條件的多樣性以及網路通信的非對稱性等特點，這些特點使得傳統的分散式數據庫技術不能有效支持移動計算環境。
  8. Critical circuits in developing this board, such as tht modulation circuit, demodulation circuit, pll and filter, were analyzed in detail. parameters adopted in these circuits were also calculated. based on all that mentioned above, a rf board was implemented and related tests and experiments were successfully done as well

    本文主要對cdpd移動終端數據機的硬體開發中的關鍵部分?高頻部分電路進行了研究，論文在cdpdv1 . 1規范的基礎上，提出了射頻部分電路的實現方案，選擇了合適的核心晶元，並對電路中的調制解調電路、鎖相環、濾波器等關鍵模塊進行了較為詳細的分析，對電路中的有關參數進行了計算。
  9. Analyzing the characteristics of the time - series data of horizontal displacement from the continuous gps network in time and frequency domain, the similarity transformation is conducted in order to give prominence to the local deformation by selecting a few stations in the eastern china

    摘要對gps基準站連續觀測水平位移時間序列數據的時頻特徵進行了分析，為了突出局部變化的信息，在中國大陸東部選取一組參考點進行相似變換。
  10. The research results are controlled source which has linear or nonlinear variabe frequency scan function and the seismic instruments which match with it, and the method of small group intervals, small offset, much more channels, short array length, high - frequency receivers are applied during the link of data acquisition, and that the techniques of the refraction static correction, the noise suppressing, the high - resolution velocity analysis, the wavelet length compression, the wavelet zero - phase, and the prestack migration should be applied emphasizedly during the link of data processing and interpretation

    研究表明，對于城市活斷層的抗干擾高解析度淺層地震勘探，在數據採集環節應採用具有線性或非線性變頻掃描功能的可控震源和與其相匹配的地震儀器，以及小道間距、小偏移距、多接收道、短排列和高頻檢波器接收的工作方法；在數據處理與解釋環節，要重視折射靜校正技術、噪聲壓制技術、高精度速度分析技術、子波壓縮技術、子波零相位化技術和疊前偏移技術等的應用。
  11. The temporal, spatial and frequency - field characteristics are discussed. the validity of the corresponding empiric formula is analyzed and the atmospheric effects and correction method are investigated in the data analysis of the ground - based observations. the atmospheric effects on the gravity observations are analyzed and detected using the gravity data recorded with the superconducting gravimeters at the global geodynamic project ( ggp ) stations

    利用實測地面氣溫、氣壓資料獲得大氣負荷效應時間序列的數值結果，研究大氣影響的時間、空間和頻率特徵，分析經驗公式的有效性，研究地面觀測和數據分析大氣影響和改正的方案；利用ggp臺站超導重力觀測資料，分析檢驗大氣重力影響；分析igs臺站大氣位移改正的可能性
  12. Connectors with assessed quality, for use in d. c., low - frequency analogue and in digital high speed data applications - printed board connectors - detail specification for shielded two - part connectors having a basic grid of 2, 0 mm, fixed part with solder and press - in terminations for printed boards, free part with non - accessible insulation displacement and crimp terminations - part 4 - 107 : printed board connectors with assessed quality - detail specification for shielded two - part connectors havin

    直流低頻模擬和數字高速數據用經過質量評定的連接器.印製板連接器.基本網格為2 . 0mm固定部分有印製板用焊接終端和壓入終端活動部分有不可及絕緣移動終端和壓接終端的屏蔽兩件式連接器詳細規范
  13. The thesis firstly addresses the real - time performance of spectral zoom analysis algorithms. complex modulation based zoom algorithm is a classical one of such algorithms, in which samples are modulated, decimated, filtered, spectrally analyzed and re - sorted

    在這種演算法里，對長采樣數據復調制，把欲分析的頻段的中心頻率移到零頻點，然後重采樣、低通濾波得到欲分析的頻段，再做fft分析。
  14. The mobile multimedia communication system need to support the transmission of high - speed data and variable speed data compared with the ordinary spread spectrum communication. the data rate ranges from several kbps to hundred kbps for wide up to 2mbps. in order to assure different data rate to transmission in the same spread spectrum bandwidth, we need to use different lengths and orthogonal pn codes

    傳統移動通信系統所提供的數據速率一般只有幾kbps ，而移動多媒體通信所要求的數據速率范圍為幾mbps甚至幾十mbps ，在同一擴頻系統內傳輸多媒體的擴頻比也不一樣，就要採用不同長度的偽碼，而且偽碼之間必須保證正交性或準正交性。
  15. And it has significance in multimedia communication, digital multimedia broadcast and portable consumer electronics etc. the real - time implementation of video coding requires very high computation power and memory bandwidth

    它面向移動多媒體應用，對新一代移動多媒體通信、數字多媒體廣播、便攜式視聽消費電子產品等產業的發展具有重要意義。數字視頻數據壓縮的實時實現對處理器的計算能力和帶寬要求很高。
  16. Pcs encompasses cordless phones, cellular mobile phone, paging systems, personal communications networks, wireless office phones and any other wireless telecommunications systems that allow people to place and receive voice / data calls while away from home and office

    Pcs包括無繩電話、移動電話、尋呼系統、個人通訊網路、無線辦公電話和所有其他無線電訊系統，可使人們離家或辦公室外出時發送和接收音頻/數據。
  17. Considered usual condition in mobile computing enviorenment, the thesis put forward a creative thought - - " more mobility on client, high capability on server ", combined that mobile database has a small capacity, connected and disconnected frequently ; memory database has short latency time, fast data accessibility ; therefore, according to syncml protocol ; based on the frame of data synchronization of heterogeneous database, built a model of rapid synchronization of heterogeneous data, using mobile database technology on client and customized memory database technology on server. through experiments, it has been proved to be a improvement of data synchronization technology, and has been applied to the mobile dispatch system of the china airdrome

    論文針對移動計算環境下的普遍應用情況，提出「在低端加強移動性，在高端提供高性能」的創新思想，結合移動數據庫容量小，斷接頻繁；主存數據庫響應時間短，存取數據快的特點，遵循syncml協議，在移動環境下的異構數據庫數據同步模型架構之上，搭建起一個移動客戶端使用移動數據庫技術，服務器端採用定製主存數據庫技術的異構數據快速同步模型，實驗表明，這是對數據同步技術的明顯改善。
  18. Get hands - on experience on a variety of flash - enabled devices with interactive video and content, updatable user interfaces, flash web content, and mobile data applications

    獲得親身體驗各種閃光的終端設備，互動式視頻和內容，可更新的用戶界面，閃光的網站內容，移動數據應用。
  19. In the code division multiple access ( cdma ) system, the multiple access interference ( mai ) mitigation capability as well as system capacity are determined, to a great extent, by the correlation properties of spreading sequences ; while adaptive modulation and coding ( amc ) with high spectral efficiency is the key technique to obtain high speed and low symbol error rate ( ser ) performance in mobile data transmission

    在碼分多址（ cdma ）系統中，擴頻序列的特性在很大程度上決定了抗多址干擾（ mai ）能力和系統容量，而高頻譜效率的自適應調制編碼（ amc ）技術則是獲得高速率和低誤碼率（ ser ）移動數據傳輸性能的關鍵因素。
  20. The application of video is inevitable trend, along with the fast and fierce development of multimedia, network technique and mobile communication. wether in the ip ( internet ) network or in the channel of wireless mobile network, error code or noise of signal and loss of data etc. are always unavoidable, when they are transmited in the critical channel, compressed data likely cause quality decrease of serial of video pictures, even ca n ' t be decoded

    隨著多媒體、網路技術及移動通信的迅猛發展，視頻通信應成為了不可阻擋的發展潮流。無論是在ip （ internetprotocol ）網路還是無線的移動網路的通道中，信號的誤碼、數據的丟失總是難以避免的。所以當數據、信號在通道苛刻傳輸時，壓縮的視頻數據將必然受到影響，它很可能引起一系列視頻圖像質量的下降，甚至無法解碼。
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