水下聲信號 的英文怎麼說

中文拼音 [shuǐxiàshēngxìnháo]
水下聲信號 英文
underwater audible signal
  • 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...
  • 下 : 下動詞1. （用在動詞后,表示由高處到低處） 2. （用在動詞后, 表示有空間, 能容納） 3. （用在動詞后, 表示動作的完成或結果）
  • 號 : 號Ⅰ名1 （名稱） name 2 （別號; 字） assumed name; alternative name3 （商店） business house 4 （...
  1. Through the inspecting, the author selected three methods of eradiate noise ' s feature extraction. the methods include the pedigree, e - filter, fractal. in those methods, the pedigree is based on frequency field, the e - filter is based on the energy field and the fractal is based on time field

    本文作者經過考察，採用了三種前期研究中較為有效的水下目標特徵提取方法? ?基於功率譜估計的線譜特徵提取方法、基於小波分析的不同頻段內能量特徵提取方法和基於水聲信號分維特性的特徵提取方法。
  2. In attempt to directly compare the sound response characters of the same bf neurons or different bf neurons and their interactive relation, the double recording microelectrodes were penetrated into two different neurons in iso - frequnency laminas or hetero - frequency laminas. taking advantage of frequency tonotopical arrangement in 1c of bats, it was explored how the neurons integrated different parallel processes of the same sound information. in the case of which, we hoped to explore the relation between the sound response characters of the central auditory neurons and neural modulation in background noise for the further understanding of the mechanism in the central auditory neurons extracting sound signals

    本研究以大棕蝠（ bigbrownbat ， eptesicusfuscus ）為模型，利用ic聲調組構排列成同頻層這一結構特點，突破單電極記錄和檢測神經元的方法，同時推進兩單電極至一個同頻層或兩個同頻層的兩個不同神經元，試圖從細胞水平直接比較兩個具有相同和不同最佳頻率的神經元聲信號的加工處理特徵、以及它們之間的相互關系，以期窺探它們在對同一聲信號處理過程中的整合奧秘，並以此為基礎分析和探討背景噪聲條件下中樞神經元聲反應特徵與神經調制的關系，以期進一步了解中樞聽神經元聲信號提取的機制。
  3. Lt is well anown that the multi ? ath effeet results in signal fading and intersymbol interference ( isd, wnich causes great difficulhes in pewces of transndssion in underwater acoushc cotnmnication. in this papef we used frequency diversity method to overcome the problem of signal fading, and used the frequency - hopping method to ebonate the isi caused by multi - path

    水聲通道多途特性引起的信號衰落和碼間干擾是影響水下通信質量的主要因素，採用頻率分集技術可以處理幅度衰落，而跳頻技術則可以簡單、有效地抗多途引起的碼間干擾。
  4. It has shown that a good agreement between acoustic emission and transpiration, and the ae signal is a good water stress index for irrigation control

    試驗結果表明，作物在水脅迫下產生的聲發射信號與蒸騰量等水分指標的一致性較好，對水分虧缺反應敏感，是一個良好的灌水指標。
  5. 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。
  6. The underwater acoustic signal is the main information for the underwater detection and identification system, so it is very important to get the acoustic signal efficiently

    摘要水下聲信號是水下探測系統實現對水中目標遠程探測識別的主要信息之一，有效獲取水下聲信號是一個十分重要的問題。
  7. It is well known that array processing technique is a main branch of underwater acoustic signal processing and multi - target parameter estimation

    陣列處理是水下聲信號處理的重要組成部分，是進行水下目標參數估計的重要環節。
  8. In the recent years, along with the development of the production technology of the vector hydrophone, more and more people notice the importance of the detect and measure technology of underwater acoustic vector signal, and it is applied in more and more fields

    近年來，隨著矢量水聽器的製造技術的不斷進步，使得水下聲矢量信號的探測和測量技術日益受到人們的關注，應用領域也不斷擴大。
  9. A vector hydrophone is composed of two or three spatially co - located but orthogonally oriented velocity hydrophones plus another optional co - located pressure hydrophone. this paper introduces an underwater acoustic eigenstructure esprit - based algorithm that yields closed - form direction - of - arrival ( doa ) estimates using a single vector hydrophone

    矢量水聽器是由質點振速傳感器和聲壓傳感器復合而成的，相對于傳統的聲壓水聽器，可以獲取水下聲矢量信號，為水下信號的檢測和估計提供了更為豐富的聲場信息。
  10. The passive recognition technology of underwater targets is always a hot topic in the field of underwater signal processing

    水下目標被動識別技術一直是水聲信號處理領域研究的熱點。
  11. Because the sonar system have high frequency, high resolving capability and 128 receiving channels, the unit can not only sampling, store and translate the receiving sound - signals, but also have the property of lower power

    由於聲納系統工作在高頻率，並且具有高解析度和128個接收通道，所以水下單元的設計不僅能夠對接收聲信號進行高速採集、存儲和傳輸，而且還具有低功耗， 。
  12. It also studies the influencing factors including sampling frequency, pd waveform, decline time, time intervals between pd pulses, mother wavelet, center frequency of interference, entropy threshold value and snr. in addition, it applies wavelet packet method （ wpm ） for non - stationary signal de - noising in on - line pd monitoring and analyzes the processing results under different pd waveform, sampling frequency and noise level. firstly, the curve of pd

    基於小波包變換的非平穩信號消噪演算法（ wpm ）已較為成熟，本文將其應用於局部放電在線監測，通過研究其對不同局放波形、采樣率、噪聲水平下的處理效果，首次提出了理想白噪聲條件下提取局部放電信號的曲線，分析了各種因素對該演算法下信號失真的影響。
  13. This thesis discusses on the post - processing of sonar signal which includes the search and location of the target, the pattern recognition and the neural networks classification, and also carries out a process of the sea test data with the post - process - programs to verify the validity of the pattern recognition with bp neural network, which helps to develop the sonar image processing and the image processing of other fields

    本文在完成課題中的顯示控制任務同時，對聲納信號後置處理，包括目標的搜索定位以及模式識別和神經元網路識別等內容，進行了論述，並利用後置圖像處理程序對正樣機海試數據進行處理，驗證了bp神經元網路下模式識別方法在水聲圖像處理方面的有效性，有助於聲納圖像處理以及其他領域圖像處理的發展。
  14. 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。
  15. It is designed to enable an mcm diver to simultaneously navigate within a search pattern while locating potential mine contacts with a high - frequency scanning sonar

    新的潛水員偵察系統還被設計有如下功能，即該系統的高頻掃描聲吶信號與定位的潛在水雷聯系的同時，系統可同時在搜索航線內航行。
  16. 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。
  17. The underwater wget sdriulator is developed for the underwater tuget tracking system. lts functon is to simulate acoustic muhi - channel signals and underwater taiget ' s dring tracks as if the buoy receiver is receiving data frorn the real world

    水下目標模擬器是水下目標跟蹤定位系統的實驗室檢驗設備，主要任務是模擬水聲多途信號和水下目標的運動軌跡。
  18. Underwater acoustic data acquisition equipment is necessary for underwater acoustic experimentation. since the situation underwater is very complicated, we must adopt the data acquisition equipment which is adaptive to the abominable field underwater. all of these make us to make the data acquisition equipment to has a wide dynamic range and have the utility to acquire the signals which have large amplitude range

    水聲數據採集裝置對於水聲試驗來說是不可缺少的，由於水底的自然環境極其復雜，這就要求我們所採用的數據採集器能夠適應水下惡劣的自然環境，因此所採用的數據採集器應具有較大的動態范圍，所採集信號的幅度范圍要盡可能的寬。
  19. The software design, which includes wavelet transform and cl1anged zero tree method, is accomplisi1ed with tc. then, debug of " i ' i company ' s ccs software is used to change tc progran1 to hardware program. wt620l board, wllose center ci1ip is tl ' s digital signal processor ( dsp ) tms320c620l, is used to run tl1e program

    本方法從水聲通道實際需要出發對零樹法加以改變，並在tc環境下完成小波變換及改變的零樹法的軟體設計，在ti公司的ccs軟體提供的debug環境下、聞亭公司以ti公司數字信號處理晶元（ dsp ） tms320c6201為核心晶元的wt6201評估板上完成硬體程序運行。
  20. Second discusses adaptive filter ' s application in measuring frequency of cw sonar pulse signal and in towed linear array sonar signal processing. simulation is made about adaptive filter ' s application. simulation result shows that adaptive filter is very powerful tool for underwater acoustic signal processing

    接下來本文討論了自適應濾波器在cw聲納脈沖信號測頻和拖曳線列陣聲納信號處理中的應用，並進行了模擬研究，模擬結果表明自適應濾波器是處理水聲信號的十分有效的工具。
分享友人
分享到 Line

分享到臉書