spread of techniques 中文意思是什麼

spread of techniques 解釋
技術推廣
  • spread : vt （spread）1 伸開，伸長（手臂等），展開，張開（帆等），打開（地圖等）；鋪開（氈子等），展寬，展...
  • of : OF ＝Old French 古法語。
  • techniques : 方法
  1. Through some research in depth on soct, this thesis proposes a scheme of star - type vsat ( very small aperture terminal ) network based on overlap back transmission, and do some research on key techniques involved with the scheme and their partial realization with fpga ( field programmable gate array ), such as spread spectrum techniques, a non - coherent de - spreading spectrum and demodulation technique and adaptive interference cancel

    本文在深入研究衛星重疊通信技術的基礎上，提出了一種基於重疊回傳的星形vsat網方案。並在衛星重疊通信涉及的幾種關鍵技術及其部分核心器件的fpga實現等方面進行了一些研究，包括：擴頻技術、非相干解擴解調技術、自適應干擾抵消技術等，並將它們用於基於重疊回傳的星形vsat網方案。
  2. This paper mainly expounds the techniques of downconvertion and error connection encode in leo spread spectrum communication system

    本文主要研究在特種小衛星擴頻通信系統中的下變頻和糾錯編碼技術。
  3. While the scientific technology developing at a tremendous speed, the level of hydro - generator manufacturing is increasing. now the f - class insulation standard for generator is adopted, and cad for hydraulic design has spread, and advanced theory in hydraulic design is applied, and insulation materials are discovered, and precise processing techniques are under research. in the hydroelectric industry it ' s necessary to increase the generating units " installed capacity to take advantage of an old power plant and to raise the utilization ratio of water power energy

    隨著科學技術的飛速發展，水力發電機的生產製造水平日益提高， f級絕緣在電機中的運用；計算機cad輔助水力設計的推廣，先進的水力設計理論的應用，新的電氣絕緣材料的發現，精密的加工工藝的研究，為了提高水能利用率，使老電站煥發青春，機組增容改造已是水電事業發展中一項不容忽視的工作。
  4. The principle and application of zero current switching boost pfc circuit are given. by introducing the development of ac / dc module with pfc the key techniques of the module are stressed on the engineering design. some problems are resolved such as the module is so small that spread the hot difficulty

    從理論上分析和研究了零電流開關升壓式pfc電路的原理和應用，並結合250w帶pfc電路ac dc模塊的研製，從工程設計角度重點闡述了該模塊的關鍵技術，解決了模塊體積小、散熱困難及工藝等方面的難題。
  5. Depending on the development of reconnaissance and interference techniques, spread - frequency communication is gradually becoming the effective communication manner in order to reduce the probability of being captured or interfered, to enhance the security of communication, and to improve the anti - jamming ability of the communication system

    隨著通信偵察和干擾技術的發展，為了降低通信過程中被截獲、被干擾的概率，提高通信的可靠性，增強通信系統的抗干擾能力，擴頻通信逐漸成為現代通信的一種對抗干擾的有效通信方式，跳頻通信是擴頻通信中的一種。
  6. In this paper, the principle of spread sequence communication and all kind of the current multi - user detection techniques and the independent component analysis ( ica ) algorithm are respectively analyzed completely in chapter ii, chapter iii and chapter iv. based on the statistical feature of multi - user signal that the signal of every user ' s and every channel is statistical independent with each other and take the same distribution, the mathematical model of the received multi - user signal is fully researched, then the blind signal detection algorithm is introduced into the multi - user signal detection, two new algorithms of multi - user detection are proposed : multi - user detection based on the delay estimation of downlink using ica in ds - cdma and based on ica post processing matched filter multi - user detection

    本文比較全面的從第二章到第四章分別介紹了cdma擴頻通信的原理和現有的各種多用戶檢測技術以及獨立分量分析（ ica : independentcomponentanalysis ）這種盲源分離演算法，並在此基礎上，從多用戶信號的統計獨立同分佈的統計特徵出發，分析研究了cdma通信中多用戶信號的數學模型，將盲源分離技術應用到多用戶信號檢測當中來，提出了兩種盲多用戶檢測的策略：基於獨立分量分析的下行鏈路延遲估計的多用戶檢測演算法；基於獨立分量分析后處理的匹配濾波多用戶檢測。
  7. In spread - spectrum communication positioning system, the multi - path signal is always existing and unable to be eliminated. how to extracting its multi - path rapidly and real - timely is one of the key techniques in mobile communication positioning system

    在擴頻通信定位系統中，多徑信號是一個普遍存在而又難以消除的干擾，如何實時有效的估計和提取多徑干擾分量是提高移動通信定位精度的關鍵技術之一。
  8. This paper researches the integrating application of adaptive antenna array technology, spread - spectrum communication technology and transform - domain filter technology in shortwave communication area, basing on the background of improving on the shortwave communication equipments being used in chinese army, and all the key techniques mentioned above are implemented in a single fpga chip

    本文以改造我軍現役短波通信設備為背景，研究了自適應天線陣技術、擴頻通信技術、變換域濾波技術等多種現代數字信號處理技術在短波通信中的綜合應用，並以單片超大規模fpga晶元為硬體處理平臺，對系統中的關鍵技術進行了設計與實現。
  9. Spread spectrum technique is brought forward originally in military communication for antijam and low probability of intercept. it ' s capability in security and antijam makes its expensive applications in the fields of communication and detection. application in multiple access communication techniques accelerates nowadays - 3g technique

    擴頻技術最早是在軍事通信中為了抗干擾和降低截獲概率而提出來的，它的保密、抗干擾性能使它在通信和探測領域得到廣泛的應用，擴頻技術應用於多址通信（碼分多址）使得當今的移動通信和3g通信等技術得以快速蓬勃的發展。
  10. 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。
  11. This paper discusses an application of spread spectrum technology in deep space tracking telemetering & control ( tt & c ) system, proposes a spread spectrum microwave unified tt & c system ( ss - muttcs ). then the constitution, principles, performances and key techniques of ss - muttcs are analyzed

    討論了擴頻技術在深空測控通信中的應用，提出一種擴頻體制微波統一測控系統（ ss - muttcs ） ，並簡要分析其組成原理、性能和關鍵技術。
  12. With the development of the modern electronic counterwork techniques, the estimate of the carrier frequency, signal period, and even the pseudo - random ( pn ) sequence itself of direct sequence spread spectrum ( dsss ) is possible

    隨著現代電子對抗技術的發展使得估計直接序列擴頻通信的載波頻率、符號周期甚至擴頻碼本身變為可能。
  13. Expanding rate and dissymmetry index was also employed to describe the spatial differentiation of urban land use growth. assisted by spatial analysis techniques of gis, the selection of allocation of the city and spatial differentiation in the process of urban spread was analyzed, so did the environmental condition effects to urban spread of jinan in order to discover function and rule environmental condition in the process of urban spread

    把不同時段城市擴展的特徵從雜亂的、大小不一、形狀不同、空間位置不同的城市擴展斑塊中提取出來，通過分析濟南市的城市選址與擴展過程，探討影響濟南市城市擴展的因素，揭示自然環境條件在濟南市城市擴展中的作用和規律。
  14. Circular symmetric spread spectrum digital image watermarking using chaotic sequences as the watermark takes advantage of the discrete fourier transform properties and spread - spectrum communication techniques to embed a circular symmetric watermark in the frequency domain. the watermark can be detected without the presence of the original image even when the watermarked image suffers geometrical attacks such as translation, rotation and scaling. experimental results show that the proposed scheme has good transparency and highly good robustness to geometric transformations

    基於混沌序列的圓對稱擴頻水印方案是以實值混沌序列作為水印，根據離散傅立葉變換的特性並結合通信上的擴頻技術，將一圓對稱水印嵌入到了圖像的頻域中，且即使圖像遭受了平移、旋轉、縮放等幾何攻擊檢測水印也不需要原圖像。
  15. This paper focus on the key techniques of digital spread and despread spectrum communication system, which includes high speed adc of digital if, digital down converter, digital pn code matched filter and carrier recovery of digital demodulation

    本文結合stel - 2000a對全數字化擴頻、解擴中的關鍵技術進行了研究。主要包括數字中頻中的a / d變換、數字下變頻、數字匹配濾波器以及數字化解調中的載波跟蹤技術等。
  16. Development of computer techniques and image processing techniques accelerate the spread and application of computer vision inspection technique

    計算機技術和圖像處理技術的發展使得計算機視覺檢測技術得到了越來越廣泛的應用。
  17. The fact that traditional views are being interrogated is heartening, however, for it allows space for reinterpretations of such matters as risk management in agriculture via modern financial innovations such as futures markets, and techniques such as forward contracting, spreading sales, and hedging, techniques that over the past century - and - a half have spread to a wide range of commodities all over the world

    但傳統的觀點受到質疑這件事本身是令人鼓舞的，因為它允許我們通過現代的金融體制諸如期貨市場和現代的金融技術諸如意向契約、傳播銷售和套期保值來對農業的風險經營進行重新詮釋，而這些金融技術在過去的一個半世紀里已經在全世界深入到了許多商品的廣闊領域
  18. Animation techniques and animation culture spread widely with the export of animation from america and japan, and have much influence on local animation industry where they approach, and become the important part of international competition power for local animation industry by combining with the cheap labor. this paper analyzes and studies the construction and cause of international trade on animation by regarding animation as object in the perspectives of double attributes along the two clues of economic factor and cultural factor, by using the

    本文正是適應了上述理論和實踐的要求，以動畫產品為研究對象，從文化產品的雙重屬性出發，緊密圍繞經濟因素和文化因素兩條線索，運用歸納與演繹相結合、歷時分析與共時分析相結合的方法，從經濟學、營銷學、傳播學和社會學等多學科的視野分析和研究了動畫產品國際貿易的結構和成因。
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