水聲學 的英文怎麼說

中文拼音 [shuǐshēngxué]
水聲學 英文
hydroacoustics
  • 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...
  • 學 : Ⅰ動詞1 （學習） study; learn 2 （模仿） imitate; mimic Ⅱ名詞1 （學問） learning; knowledge 2 （學...
  1. Acoustics - calibration of high frequency hydrophone

    聲學高頻水聽器校準
  2. Acoustics - calibration method of hydrophone acceleration sensitivity

    聲學水聽器加速度靈敏度校準方法
  3. Acoustics - low frequency calibration methods of hydrophones

    聲學水聽器低頻校準方法
  4. Magnetostriction and acoustics properties of tb1 - xdyx fe1 - ymny 1. 95 alloys and application to sonar transducer

    95合金的磁致伸縮和聲學性質及在水聲換能器中的應用
  5. In this paper matlab and vb are used to build a software which can predict absorption coefficient ' s of the underwater anechoic coatings from these analytical models. finally, some algorithm of the single parameter minimization, nonrestraint nonlinear minimization and restraint minimization in the optimization design theory are studied. the formulas of absorption coefficient of these analytical models are object functions

    本論文利用各種解析模型的聲學設計理論，使用matlab與vb軟體建立了一套水下消聲覆蓋層吸聲系數預報軟體，研究了最優化設計中單參數最小化、無約束非線性最小化和有約束最小化理論的一些演算法，利用現有模型的吸聲系數計算公式作為目標函數，初步優化了一些結構的材料參數。
  6. According to their space position, the seismic features of shallow gas in this region can be divided into three groups : ( 1 ) features in the stratum : acoustic blanket, acoustic curtains, acoustic turbidity, irregular strong top reflection boundary, and phase pull - down in both flanks ; ( 2 ) features of the seabed : seabed pockmark and giant sunken pit ; ( 3 ) features in the seawater column : acoustic plumes, cloudy turbidity and point - line - type reflection

    該區的淺層氣地震特徵按空間位置分為3大類： （ 1 ）地層中的特徵：聲學空白、聲學幕、聲學擾動、不規則強反射頂界面、兩側相位下拉； （ 2 ）海底面的特徵：海底麻坑、大型塌陷坑； （ 3 ）海水層中的特徵：聲學羽流、雲狀擾動、點劃線反射。
  7. The experimental data are in good agreement with the calculated results of the model by analysis of the data of the laser pulse of different energy induced the laser plasma shock front by acoustics means. in addition, the calculated results of the model are in good agreement with the experimental data by optics means

    同時設計應用聲學方法對水中不同能量的脈沖激光作用下產生的激光等離子體沖擊波波前傳播過程進行測試及數據分析，對光學陰影方法探測的激光等離子體沖擊波近場波前傳播數據進行詳細分析，結果表明新模型計算結果與實驗測量值一致。
  8. Acoustics - high - power characteristics of underwater sound projectors and their measurements

    聲學水聲發射器的大功率特性和測量
  9. In this paper, the main research works are as follows : 1 ) survey and analysis previous work in auv navigation and summarize : as the cumulate error, the dead - reckoning and inertial navigation systems ca n ' t be used without other modified system ; the acoustic navigation system is used only in small range, and is very expensive. 2 ) two important approaches in geophysical navigation techniques are summarized, one is terrain contour based navigation, this approach is investigated keystone today ; the other is image based navigation, due to no perfect image sensors and image seabed map, this approach has seldom been practised. 3 ) two important terrain contour based navigation algorithms has been applied to auv, one is match algorithm - based terrain contour match ( tercom ) ; the other is kalman filter - based sandia inertia terrain - aided navigation ( sitan )

    主要研究內容包括：一、總結分析了當前水下導航的常用方法和不足之處，指出基於航位推算的導航方法，存在著最大的問題就是導航誤差的積累問題，如果沒有修正系統，這種方法很難滿足使用要求；其次指出基於聲學的導航方法，造價昂貴，導航范圍有限，難以滿足自主水下航行器大范圍導航的需求；二、總結了當前水下地形輔助導航的主要技術路線，一是基於地形高程的匹配方法，這是當前研究的重點；二是基於地形圖像的匹配方法，由於缺乏良好的圖像傳感器，和可用的海底圖像地圖，目前這種方法還有待研究發展；三、將兩種地形高程匹配的常用方法應用到自主水下航行器上：以相關演算法為前提的地形輪廓匹配（ tercom ）方法和以卡爾曼濾波為基礎的桑迪亞慣性地形輔助導航（ sitan ）方法，前者演算法簡單可靠，但是導航精度不高，後者雖然精度比較高，但存在著演算法較為復雜、有可能發散和出現奇異值等問題。
  10. By modeling of " y " - shaped junction of the compound river channel with an intersection angle 90, the flow velocity and water level at the junction were obtained by use of the acoustic doppler velocimeter ( adv ) and point gauges

    摘要通過製作交匯角為90的復式斷面河道" y "型交匯河口模型，利用三維聲學多普勒流速儀（ adv ）和測針獲取流速及水位數據，對支流河口處的水流流態包括水面形態、水流流速和水流分區進行分析。
  11. This paper is combined with the project of research of underwater acoustic network technology. first, we study and research existing uan and its protocols at home and abroad

    首先學習、研究了現有國內外有關通信網路及其協議，並對國外現有水聲通信網路進行了較深入的研究和分析。
  12. Acoustic water level

    聲學水位計
  13. Acoustics. measurement method of insertion loss and echo reduction for the underwater acoustical material sample

    聲學水聲材料樣品插入損失和回聲降低的測量方法
  14. Main ideas as follows : research of audio digital watermark algorithm based on fast fourier transforms and psychoacoustic auditory model

    主要工作有:基於快速傅立葉變換與聲學模型的音頻數字水印演算法研究。
  15. Based on the analysis and study of the primary principle and countermeasure process of the underwater acoustic countermeasure equipments, the mathematical models of the typical underwater acoustic countermeasure equipments such as the wide - band noise jammer target radiation noise simulator echo simulator and the gas bubble are presented

    在詳細分析、研究水聲對抗器材有關基本概念、基本工作原理及對抗過程的基礎上，歸納、總結了噪聲干擾器、目標輻射噪聲模擬器、主動回波模擬器及氣幕彈等當前典型水聲對抗器材的數學模型。
  16. The frequency analysis of the psychoacoustic model can give the inaudible, redundan elements of audio. in this paper we employ it to guarantee the inaudibility of the embedded watermark

    心理聲學模型的時頻域分析主要用於音頻數據的壓縮編碼，這里主要考慮將其用於音頻水印演算法中去，以便從理論的角度來考慮嵌入水印的不可感知性。
  17. United states navy underwater sounder laboratory

    美國海軍水聲學實驗室
  18. With the rapid development of information science and electronic technical, sonar system was hardware realized by subsystem and digital signal processors, expert system software was also available

    隨著信息科學和電子技術的迅速發展，水聲設備? ?聲吶系統已逐步實現系統化、數字化和智能化。
  19. Evaluation was conducted at the basic point of efficiency of observational system, and expressed by probability of intercepting and capturing target by sonar equipment of submarine, which provided scientific foundation for organizing and commanding of missile attack about submarine

    具體指示效能評估在觀察系統效能評估的層面上進行，用水聲設備截獲被打擊目標的概率來表示，為保障潛艇導彈攻擊目標指示組織指揮提供了科學的依據。
  20. Transvaginal color doppler sonography in diagnosing endometrial disorders of perimenopausal women

    經陰道彩超配合宮腔注水聲學造影診斷子宮內膜病變
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