海洋聲道 的英文怎麼說
中文拼音 [hǎiyángshēngdào]
海洋聲道
英文
ocean sonic channel-
To get the wayward whales headed in the right direction, researchers with the sausalito - based marine mammal center planned to play recorded humpback sounds from a boat thursday as the tide goes out, then use more boats lining the channel to try to prevent the two from turning around
為了讓兩只迷路鯨魚朝著正確方向，梭沙立托地區的海洋哺乳動物中心工作人員計畫周四在退潮時，從船上播放錄好的座頭鯨聲音，並且用許多小船限制通道，以免兩只鯨魚掉頭。The main research advances can be summarized as follows : ( 1 ) study the signal processing ' s performances and methods of homing torpedo system comprehensively, in order to setting up a corresponding mathematical models ; ( 2 ) analyze the ocean channel ' s effects on the work of homing system, then found some models such as target echo signal, noise ( including background noise, target radiating noise, etc ), ocean reverberation. according to them, simulate the array signal ; ( 3 ) the system structure, every function blocks composing are studied and founded thoroughly. then, discuss methods of signal processing in time domain and airspace domain ; ( 4 ) program the simulation software of torpedo ' s homing system according to the simulation models and flow charts, which connected with torpedo ' s control part
本文所作的主要工作及研究成果主要有以下幾個方面： （ 1 ）對自導工作過程中的信號與信息處理的基本理論與方法進行了較為全面的研究，為建立一個較為完備的自導模擬系統提供了理論基礎； （ 2 ）討論了自導系統工作過程中海洋通道對目標回波信號與目標輻射噪聲信號等的影響，建立回波信號的數學模型、環境場中的噪聲信號模型（包括海洋環境噪聲、目標輻射噪聲與魚雷背景噪聲等）與海洋混響模型，模擬產生了聲自導系統基陣接收到的回波信號與噪聲信號； （ 3 ）深入研究並建立了自導模擬系統的總體框架，給出各個具體功能模塊組成，討論了聲自導系統對信號的時域與空域處理，並結合模擬程序中陣列信號處理模塊，給出固定多通道波束形成的模擬實現過程； （ 4 ）根據系統的模擬模型與已建立的模擬流程圖編制了通用魚雷模擬器自導系統模擬軟體，通過網路與控制系統相連，組成完整的魚雷模擬器。Then will the earth tremble, and the sea bear no ships ; heaven will not support the stars in their orbits, all voices of the gods will be forced into silence ; the fruits of the earth will rot ; the soil will turn barren, and the very air will sicken with sullen stagnation ; all things will be disordered and awry, all good will disappear
然後大地會顫動，海洋不能負載船隻；天空不能支持星星自身的軌道，所有眾神的聲音會被迫進入寂靜，大地的果實會腐爛；土壤會變成荒地，每處空氣都有沉沉不樂的停滯而使得惡心，所有事物都變得無序和歪曲，所有的美好都消失。The underwater - radio buoy for use as obtaining the ocean " s acoustical parameters is a underwater acoustic signals record system which has long distance radio remote control and data transmit function. the technology key of the dissertation study is that under the requirements of the system the monitor and record equipment on the acoustic source vessel, the monitor and record equipment on control vessel command and control the work slate of the buoy system by radio data transmitting mode of short wave transmitter - receiver
海洋環境參數獲取浮標監測系統屬于具有長距離無線電遙控?數傳功能的水下聲信號接收記錄系統，本論文研究目標的技術關鍵在於根據系統要求，指揮船和發射船監控記錄設備通過短波電臺以無線數傳方式，對浮標系統的工作狀態進行指揮和控制，浮標則通過同一短波通道向指揮船上報浮標方位、工作狀態、關鍵數據及非常狀態下的報警信號等。Far away in the west the sun was setting and the last glow of all too fleeting day lingered lovingly on sea and strand, on the proud promontory of dear old howth guarding as ever the waters of the bay, on the weedgrown rocks along sandymount shore and, last but not least, on the quiet church whence there streamed forth at times upon the stillness the voice of prayer to her who is in her pure radiance a beacon ever to the storm - tossed heart of man, mary, star of the sea
在遙遠的西邊，太陽沉落了。這一天轉瞬即逝，將最後一抹余暉含情脈脈地投射在海洋和岸灘上，投射在一如往日那樣廝守著灣水做然屹立的親愛的老霍斯岬角以及沙丘海岸那雜草蔓生的岸石上最後的但並非微不足道的，也投射在肅穆的教堂上。從這里，時而劃破寂靜，傾瀉出向聖母瑪利亞禱告的聲音。By analyzing and processing the underwater sound signals received on the array, we can get the parameters of ocean environment. compared with traditional methods of direct point measurement, ocean acoustic tomography has obvious advantages : much simpler and more effective, and it can continuously monitor ocean environment in a large area for a long time
海洋聲層析技術通過分析處理水聲接收基陣接收到的海洋通道中的水聲信號來反演海洋環境參數，這種方法方便、高效並且可以進行長時間的大范圍連續監測，與傳統的直接測量的方法相比有明顯的優勢。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。The sound speed distribution of ocean is not uniform, so the sound ray is often curving because of refraction when sound transmitting through the sea channel. this means the time delay between the transmitter and the receiver is larger than the time delay between them in the condition that the sound ray is straightaway, then positioning error is caused
海洋中聲速分佈是不均勻的，因此由於折射效應，聲音在海洋通道傳播過程中其聲線是彎曲的，聲線彎曲意味著聲信號從發射點到接收點的傳播時延大於聲信號直線傳播的時延，致使定位產生誤差。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。It studies underwater sound channel in the system
研究了系統中海洋聲通道的模擬。Corresponding aspects of underwater sound channel are summarized and a proper simulation model based upon ray - model is presented ; 5
對海洋聲通道的有關問題作了綜述，給出了一種適合模擬系統的基於射線聲學的海洋聲通道模型； 5分享友人