水聲通信機 的英文怎麼說

中文拼音 [shuǐshēngtōngxìnjī]
水聲通信機 英文
underwater communication apparatus
  • 水 : 名詞1 （由兩個氫原子和一個氧原子結合而成的液體） water 2 （河流） river 3 （指江、河、湖、海、洋...
  • 通 : 通量詞（用於動作）
  • 機 : machineengine
  • 水聲 : 1. [物理學]underwater sound2. （水發出的聲音） sound of water
  • 通信 : communication; communicate by letter; correspond
  1. Meanwhile, shanghai meining computer software co. ltd. s " stock information enquiry ", lingtong net s " ring tone graphics downloading ", wangda group s " mobile office ", beijing yisuode technology co. ltd. and go2map software beijing co. ltd. s " mobile locating system application - crystal ball " and beijing qunsheng technology co. ltd. s " games " won special nomination prizes in this competition

    同時，上海美寧計算機軟體有限公司"股票信息查詢"靈通網"鈴聲圖片下載"網達集團"移動辦公"北京易索得科技有限責任公司及新圖行天下軟體北京有限公司"移動定位系統應用-水晶球"北京群勝網科技有限公司"游戲"等5家公司提交的應用也在此競賽中分別獲得了特別提名獎。
  2. Mechanical, light industry commercial electrical appliances and daily mechanical, communication and information special field, environmental engineering air emission, noise

    機械輕工家電及日用機械通信信息專項環境工程廢水噪聲：規劃咨詢編建議書編可研招標咨詢
  3. But the traditional adaptive equalizers need periodically retrained, because the underwater acoustic channel is a stochastic time - varying channel. although the traditional adaptive equalizer increase the reliability of the propagation, the rate of it is decreased. so they are not very applicable in the field of the propagation of high rate signals through an underwater acoustic channel

    但是由於水聲通道的隨機時變性，傳統的均衡技術需要周期性的發送收端已知的訓練碼來跟蹤通道的變化，這樣做雖然提高了數據傳輸的可靠性，但是系統的重復訓練大大的降低了通信效率，在水聲通道高速率數據傳輸中並不適用。
  4. Based on the criterion of maximizing the total average signal to interference plus noise ratio ( sinr ), the optimal subchannel allocation strategy is obtained in theory when random signature sequences are used. for its implementation, an iterative algorithm is proposed, which is similar to the water filling principle. by using the proposed algorithm, we obtain significant improvement on the performance of the system, and the transmission quality can be guaranteed

    根據最大信號干擾加噪聲比原理，分析得出了隨機特徵碼條件下最優的子通道分配策略，並提出了一種類似於灌水原理的子通道分配演算法，該演算法能在保證各個用戶傳輸質量的前提下，使系統的整體性能接近最優。
  5. The nature of the multipath effect ( mpe ) has decided that phenomenon that the longer the working distance is adopted, the worse the multipath effect ( mpe ) plays the role. the new methods should be studied and employed to eliminate or mitigate the negative resulted by multipath effect ( mpe )

    由多途徑效應產生的機理可知，通信距離的拓展將使多途徑效應的影響更加嚴重，所以必須研究水聲通信中抗強多途徑干擾的各種可能措施。
  6. Active underwater acoustic positioning / tracking systems locate target by measuring the range from object to receiving sensors. usually the target - receiver range can be got by the propagating time of a signal pulse. if this propagating time is larger than the pulse repetition period, it will mean that more than one signal pulse are on propagation

    主動水聲跟蹤定位系統通過測量脈沖信號的傳播時延可以測得目標相對接收機的距離，當此傳播時延大於系統同步周期時，時延測量就會呈現不確定性，可能相差若干個重復周期，導致定位解多值，稱之距離模糊現象。
  7. The development of science and technology journal is limited obviously by its circumstance such as region, contribution, reader, etc. under the influence of these conditions, the confined mind and the unenterprise attitude is produced by editors. thus, the weak link of developing science and technology journal is showed conspicuously in blazing new trails of content, expanding circulation, and founding famous brand. for expanding the developing space of science and technology journal, some effective measures should be adopted. first, the content and quality of journal should be highly valued. the constantly bring forth new ideas in the content should be promoted by publishing original theses, supporting new subject, introducing new direction, creating characteristic column, etc. by means of these methods, the aim of spreading original achievement, starting new fields of scientific research can be achieved. so academic standard and effect of the journal can be improved. second, the operate mechanism of journal as a processing workshop should be changed. the varied methods should be adopted for selling, circulating and information feedback of journal. third, the reputation of the journal should be safeguarded by correcting ideology of publish. the resources of the journal should be rationally used and developed. it can promote the science and technology journal growing continued

    科技期刊的發展受到地域、稿源、讀者等環境因素的制約.受其影響，編輯易產生封閉、不思進取的心態，使科技期刊在內容創新、擴大流通、創立品牌等方面突現出薄弱環節.為拓展科技期刊的發展空間，首先應抓內容和質量，通過刊發創新論文、扶持創新學科、引進創新方向、創辦特色欄目促進科技期刊內容創新，以傳播創新成果，開辟創新領域，提高期刊的學術水平，擴大影響力;其次，應改變純粹的生產單位、加工車間的運作機制，採用多種局道、多種方法加強科技期刊出版后的營銷、流通及信息反饋等工作，走出重生產、輕開發、輕流通的誤區，擴大影響面;第三，應端正出版理念，維護刊物的聲譽，合理利用、充分拓展科技期刊的品牌資源，促進科技期刊的可持續發展
  8. The performance of the system has been investigated both in the laboratory ' s pool and on sea trials in real ocean environments at xiamen bay coast. the results have indicated that the new generation of underwater acoustic voice communication system has the capability to overcome the severe multipath interference and has longer working range

    通過實驗室水池的實驗和廈門港淺海域的現場測試，證實了本研究實現的新一代水聲數字語音通信機確實有更遠的作用距離並且有抗強多途徑干擾的能力，達到預期的研究目標。
  9. Based on the two ex isting underwater acoustic channel models ( the rice model and the rayleigh model ), we simulated the effects on the image signal underwater transmission with different ofdm parameters. by selecting appropriate ofdm parameters, we realize a simple offline communication system. besides, parts of programs based on ti tms320c62x are realized in this thesis

    本研究先根據現有的兩類水聲通道模型（萊斯衰落模型和瑞利衰落模型） ，藉助于計算機模擬，詳細考察不同的ofdm參數對于圖像信號水聲傳輸的影響，然後根據模擬的結果，選擇適當的參數實現了一個簡單的脫機（ offline ）通信系統，最後在ti公司的tms320c62x上實現部分相應的通信模塊。
  10. The efficient and reliable information transmission between transmitter and the mine greatly relies upon the development of long - range underwater acoustic information transmission techniques, so the analysis of the characteristics of underwater acoustic is absolutely necessary

    信息在發射機和水雷之間的可靠傳輸，離不開水聲遠程信息傳輸技術的發展，因此，遠程水聲通道特性的分析尤為重要。
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