underwater acoustic communication 中文意思是什麼

underwater acoustic communication 解釋
水聲通信
  • underwater : adj. 1. 在水下的，水中的。2. 用於水下的。3. 【造船】吃水線以下的。adv. 1. 在水下。2. 【造船】在吃水線以下。n. （海洋等）水面下的水；水下，水底。
  • acoustic : adj. 1. 聽覺的；聲學的。2. 助聽的；傳音的。3. 原聲的，不經過電子設備傳聲的。adv. -tically 在聽覺上；在聲學上。
  • communication : n. 1. 通訊，通知；交換；信息；書信，口信，通報。2. 傳達，傳授；傳播；傳染。3. 交通，交通機關；聯系，連絡（設備）。4. 【宗教】接受聖餐。
  1. In this thesis, for the merits of high frequency spectrum utility factor and high - speed data communication, the ofdm is introduced into the underwater acoustic communication. combined with fec to combat the frequency - selective fades and isi in the underwater acoustic channel, high speed data transmission is realized by employing ofdm technology

    本研究嘗試將ofdm技術引入水聲通信領域，利用該技術頻譜利用率高，多載波并行傳送的特點，結合通道編碼，以克服水聲通道多徑干擾引起的頻率選擇性衰落和碼間干擾，獲得高速率數據傳輸。
  2. Performance analysis of underwater acoustic digital communication system in a shallow water channel

    淺海通道水聲數字通信系統的性能分析
  3. The design of control and communication software : the software realized the communication of the five bouys with the control vessel and the acoustic emission vessel ; it controls the data acquisition system, it restricts the five bouys in the remote instructions from the control vessel and the acoustic emission vessel, and it also transmits the position and time information from dgps, the bearing information of the underwater acoustic construction from a electronic compass of type of tcm2 when in collection period of time

    控制和通信軟體設計：各浮標工作在指揮船和發射船遙控指令內容的約束下，控制和通信軟體實現了浮標與指揮船以及發射船的通信，控制數據採集系統工作，並在採集時段完成gps位置、時間與矢量水聽器方位信息的傳輸。
  4. 2. a uwa communication system is designed, lake experiments are also conducted with several equalization methods being employed. one key of the techniques in underwater acoustic communication - synchronization technique is studied

    在吉林松花湖作了水聲通信試驗，驗證了上述演算法的模擬結論，並對水聲通信的關鍵技術之一的相關同步技術進行了分析研究。
  5. As these underwater acoustic communication systems is intended for comparatively short distances, up to 10 - 30 km, problems arise when the submarine operate outside the normal areas, far from the save waters covered by national defence and communication systems

    但是這些水聲通信系統僅僅適用於短距離通信，最遠只能到10 ~ 30千米，如果潛艇在常規水域之外工作，遠離了國家防衛和通信系統所覆蓋的區域，就會出現問題。
  6. Power saving coding for underwater acoustic communication

    一種低能耗的水聲通信編碼方案的研究
  7. Nowadays, high data rate communication through band - limited underwater acoustic channel ( uwac ) is of general interest in the field of underwater communication

    通過帶寬有限的水聲通道獲得高速數據傳輸，是目前水聲通信領域的研究熱點。
  8. On exploring tfsk time frequency shift keying for improving underwater acoustic communication

    時頻編碼水聲通信技術及性能分析
  9. Underwater acoustic communication set

    水聲通訊設備
  10. In this case, blind equalization techniques which need not any training sequence are preferred for underwater acoustic communication

    因此，對於水聲通信通道，人們更傾向于採用不需要發送訓練序列的盲均衡技術。
  11. In this thesis, a multicarrier modulation high bit - rate underwater acoustic communication system was designed and constructed after analyzing those effects

    本論文在分析這些因素的影響之後，設計並製作完成了一個多載波高速水聲通信系統。
  12. Firstly, some useful experience about designing underwater acoustic communication systems and the properties of underwater acoustic channels are introduced

    論文首先總結了前人關于海洋水聲通信系統設計的經驗，討論了海洋水聲通道的特點。
  13. In this thesis, the characteristics of underwater acoustic channel were analyzed, the mcm technique and the lfm signal which were used in the multicarrier modulation high bit - rate underwater acoustic communication system was discussed in detail, the important parts in system designing were examined

    論文對水聲通道特性進行了分析，就多載波高速水聲通信系統中用到的多載波調制技術、線性調頻信號進行了詳細論述，論述了系統設計中的重要環節。
  14. Achieving high speed uwa underwater acoustic communication with adaptive momc multimode orthogonal multicarrier technology

    自適應多制式正交多載波高速水聲通信技術研究
  15. Underwater acoustic communications ( uwa ) are made difficult by the combined effect of multipath propagation and high temporal and spatial variability of the channel conditions. the fading which was caused by multipath propagation was one of the main factors influencing the performance of underwater acoustic communication systems

    水聲通道中廣泛存在的多徑傳播效應是水聲通信所面臨的主要障礙之一，由多徑所產生的信號衰落效應是影響水聲通信系統性能的主要因素之一。
  16. 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。
  17. Since an underwater acoustic communication channel is bandwidth - limited, transmission of quantized speech samples at high bit rates is restricted, hence speech signals must be compressed

    要想在水中進行數字語音通信就必須對語音信息進行大幅度壓縮，降低傳輸所需的比特率。
  18. The underwater acoustic channel is very complex where cochannel interference, doppler frequency offsets, narrow bandwidth and time and frequency selective deep fades obstructs the development of high speed and fidelity underwater data transmissions. thus projects of high speed and fidelity underwater signal transmissions become a hotspot in the fields of world academic circles. the conventional serial communication must use adaptive equalizer to combat the multipath in real - time

    海洋水聲通道是一種極其復雜多變的時-空-頻變參通道，其通道窄，強多途干擾，信號起伏衰落嚴重，一直是水下信息可靠高速傳輸的主要障礙，因此如何在水聲通道中高速率準確地傳輸數據，就成為世界性的熱門課題。
  19. The effect of multipath propagation commonly exists in the underwater acoustic channel and the fading which was caused by multipath propagation was the main influence factor of underwater acoustic communication system

    水聲通道中廣泛存在著多徑傳播效應。由多徑傳播引起的信號衰落現象是影響水聲通信系統性能的主要因素。
  20. With the development of information technology and internet, net communication, satellite communication, all kinds of conference call and in some special conditions, like underwater acoustic communication demand it more reliable and can keep secret and be low probability of interception. because of the effect of multipath and doppler shift, the signals through the channel fade rapidly

    隨著人類向信息技術和信息網路時代的邁進，網路通信、衛星通信、各種電話會議以及某些特殊的通信場合（如水聲通信）中都對通信的保密技術、低截獲率和可靠性提出了更迫切的需要和更高的要求。
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