窄帶通道 的英文怎麼說

中文拼音 [zhǎidàitōngdào]
窄帶通道 英文
narrow band channel
  • 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
  • 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） ...
  • 通道 : thoroughfare; passageway; pass; enterclose; gallery; drong; tunnel; avenue; alure; way; row; key ...
  1. The jiayuguan pass tower, strategically located between the qilian mountain and mazong mountain, guards the east - west passageway at the western end of the great wall and is the best preserved pass. surrounded by three inner and outer walls and several lines of defense, jiayuguan was a vital military stronghold of defense

    嘉峪關城樓，向南至終年積雪的祁連山下討賴河畔，明長城依山勢起伏隱現，向北到黑山懸崖，長城蜿蜒綿亙，嘉峪關城樓位於祁連山與馬鬃山這間狹長咽喉地帶的最窄處，鎮守東西通道，是萬里長城西端險要關隘，也是長城沿線保存得最完整的一座雄關，嘉峪關城由三重城郭多道防線，形成重城並守之勢，構成一個壁壘森嚴的軍事防禦工程。
  2. Design of super narrow band and comb - shaped multi - channel photonic crystal filters

    超窄帶和梳狀多通道光子晶體濾波器設計
  3. Very low bit rate video coding is a hotspot in video processing field in these years. it supplies a gap of application in narrowband channel

    甚低碼率視頻圖像編碼技術是近年來視頻處理領域的一個研究熱點，它的出現填補了視頻通信在窄帶通道上應用的空白。
  4. In this paper, the theory and implementing method of video encoder based on the itu - t h. 263 video coding for low bit rate communication standard are studied deeply in order to satisfy the demand of narrow - band video communication

    為了在窄帶通道上實現視頻通信，本文對基於itu - t的低比特率視頻通信編碼標準h 263的視頻編碼器的原理和實現方法作了深入的研究。
  5. The millimeter wave diplexers used in the ka - band satellite communications are investigated. these diplexers are of high working frequency, narrow passband and high selectivity, which demands the channel filters good performance

    所研究的毫米波雙工器工作頻率高（接近40ghz ） ，收發通道帶寬窄、接收頻率和發射頻率間隔很小。
  6. The capacity of subliminal channels in elgamal signatures is studied. the capacity of broadband channel and the optimal schemes in 18 general elgamal signatures are analyzed. the relation between the capacity and the embedding rate of narrowband subliminal channels based on the exhausting search is studied

    給出了容量的定義，理論上界以及影響容量的幾個因素，給出了嵌入成功率和通道使用率對容量的影響，研究了elgamal簽名中寬帶通道的容量，分析了18種廣義elgamal簽名中的寬帶閾下通道的容量並指出了最優方案，具體研究了基於搜索的窄帶通道的容量與嵌入成功率的關系，具體研究了牛頓通道的帶寬。
  7. This paper designs a measurement system and measures the main properties of power line practically. the characteristics of power line are analyzed in detail, and a power line channel model is presented which consists of the parametric transfer function model and the simulating model of background noise, narrow noise and impulse noise. simultaneously the simulating method on the computer is presented

    本文設計了一個測量系統對實際電力線通道的主要特性進行了測量，詳細分析了電力線的信號傳輸特性和噪聲特性，給出了一個實用的室內電力線通道模型，包括參數化的傳輸函數模型以及背景噪聲、窄帶噪聲和脈沖噪聲的近似模型，並給出了計算機模擬實現方法。
  8. Frequency - domain equalization. at the same time discusses some key problems in ofdm : high ratio of peak - to - average power of output signals, problem of synchronization, channel estimation, adaptive bit, power and subcarrier allocation. emphasize on channel estimation, and present a new algorithm which can filtering more interpolation errors and noise. for the sake of improve the performance of resist narrowband noise and make efficient use of the spectrum apply malvar wavelet division

    同時就ofdm系統中的一些關鍵問題如峰值平均功率比（ papr ）太高，同步問題，通道估計，通道、比特與功率必須動態分配進行了研究，著重研究了通道估計問題並提出一種改進的方法，能濾除更多的噪聲分量和插值誤差，提高系統的性能；為了提高抗窄帶噪聲的性能和提高通道利用率，用malvar小波變換實現了不等帶寬分配。
  9. For medium or long distance underwater acoustic communication, the narrow bandwidth and low carrier frequency only supports low bit - rate signal transmission

    對于中、遠距離的水聲通信而言，水聲通道的窄帶寬、低載波頻率特性只能支持較低的信息傳輸速率。
  10. With the characteristics of large ambient noise, very narrow bandwidth, low carrier frequency, great propagation latency and time - space - frequency variant multipath effect ( mpe ), the stochastic ocean channel has demonstrated the greatest complexity and difficulty for underwater acoustic wireless communications. among them multipath effect ( mpe ) is the most difficult obstacle that results in signal fading and inter - symbol interference ( isi )

    但是噪聲高、帶寬窄、載波頻率低、傳輸時延大、多途徑效應隨時間?空間?頻率變化等通道特性都會給有效、可靠的水聲通信帶來很大的麻煩，其中多途徑效應是最主要的困擾因素，它會導致信號幅度衰落和碼間干擾。
  11. 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。
  12. 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。
  13. Road vehicles - electromagnetic compatibility test procedure of automotive components - part 6 : qualification of the immunity to narrowband interference according to the current injection procedure

    道路車輛.汽車部件的電磁兼容性試驗程序.第4部分:根據通用噴射程序窄帶抗干擾性的合格鑒定
  14. You walk into a room with no doors, then a panel suddenly slides open and a ninja pops out and takes you down a series of narrow passage ways till you get down inside

    我們走進一間沒有門的房間，有個板子突然滑開，跳出一位忍者，他帶我們沿著很狹窄的通道進入里間。
  15. This paper takes yushulin oil field, which is a super - low permeable lithologic reservoir in the peripheral part of daqing oil field, as an example and uses the geologic profiling of oil - bearing sand body to propose a set of random simulation pattern optimized arrangement which is suitable for narrow channel sand body

    以大慶外圍特低滲透巖性油藏? ?榆樹林油田為例，通過對含油砂體的地質解剖，提出了一套適合窄條帶河道砂體的隨機模擬井網優化部署方法。
  16. So the upstream channel has the character of narrower bandwidth and bigger noise. this character has a big influence on data transmission on the upstream channels

    因此，上行通道具有頻帶窄，噪聲大的特徵，這一特徵對上行通道的數據傳輸具有極大的影響。
  17. Wap is designed to adapt to the bounds of wireless networks ( such as low bandwidth, high latency, less connection stability and so on ) and the bounds of wireless device ( like limited input facilities, limited battery power, limited display, memory and cpu )

    它的提出和設計充分考慮了無線通道的固有特點（如通道穩定性差、衰減干擾大、帶寬窄、時延大） ，以及無線終端處理能力有限，輸入方式和屏幕受限制的問題。
  18. The method of using a single wideband facility to transmit many relatively narrow - bandwidth signals by subdividing the frequency spectrum used in the wideband channel

    使用單個寬帶設備傳送許多窄帶信號的方法。它是通過細分寬帶通道上的頻譜來實現的。
  19. This task uses the ds - ss technology, and researchs the important technologies, such as synchronization of ds - ss, rake receive, narrow - band interference suppression, etc. these technology are useful for the voice - band channel of hf. i designed one system of very low bit rate for hf data communication, and completed the softwave module design of the system. i get the result of system ' s simulator, it ' s useful for the system realization

    根據短波音頻帶寬通道的特點，重點對系統的擴頻同步技術、 rake接收技術和窄帶抗干擾技術進行了專題的研究。並根據自己多年的科研經驗，設計了一種具有實際意義的短波最低限度通信系統，並對實際的軟體實現進行了模塊化的設計。
  20. The principles of adaptive star - qam and the optimum constellation of star qam are given. in adaptive single - carrier modulation, a blind modulation detection algorithm based on higher order cumulants ( hoc ) for aqam and apsk is proposed. the excellent detection performance of algorithm is evaluated in gaussian and narrow - band rayleigh fading channel

    對自適應單載波和多載波調制中的調制方式盲檢測演算法進行了研究；在自適應單載波調制中，研究了窄帶通道下的aqam調制原理和aqam調制最佳星座圖結構；在rayleigh通道下和高斯通道下，提出一種基於高階累積量的aqam和adpsk調制方式盲檢測演算法，演算法具有良好的檢測性能。
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