underwater wireless communication 中文意思是什麼

underwater wireless communication 解釋
水下無線通訊
  • 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。
  • wireless : adj 無線的;無線電報的,無線電的;無線電話的。 a wireless enthusiast [fan] 無線電迷。 a wireless ...
  • 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. Since sound is the only effective information carrier for medium or long distance wireless communication in sea water, underwater acoustic ( uwa ) communication plays an important role in national defense and in the development of marine economy

    由於聲波是目前海中實現中、遠距離無線通信唯一有效的信息載體,因此水聲通信對于國防的保障和海洋經濟的發展都有著極其深遠的意義。
  2. The main work of this thesis includes : system level design and implementta - tion of an underwater multiple targets tracking ( umtt ) system, use of the embedded dgps receiver in buoy, migration of wireless communication system on ocean, and performance verification by experiments

    本論文的主要工作包括水下多目標跟蹤系統的總體設計研究與實現,浮標中嵌入式dgps接收機的使用和海上無線通信系統的搭建,最後通過實驗驗證系統的工作性能。
  3. It has been proven that the spread spectrum technologies have good capabilities of overcoming isi in electromagnetic wireless channel. the feasibilities of their applications to underwater acoustic channel have been analyzed, the frequency hopping technology is chosen. instead of using time - frequency diversity, convolutional coding and viterbi decoding are employed to combat signal fading, consequently the bit - rate and bit - error - rate performance of the underwater acoustic voice communication system can be balanced and controlled

    由於擴頻技術在抗碼間干擾方面具有優良的特性,因此在分析了各種擴頻技術于本研究應用的可行性之後,確定了跳頻技術作為具體實現方案;在克服幅度衰落方面,選用卷積編碼和維特比譯碼方法來替代原有的分集技術以綜合調節系統的通信速率與誤碼性能,達到差錯可控的目的。
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