radiated noise 中文意思是什麼

radiated noise 解釋
輻射性噪聲
  • radiated : 傳播
  • noise : n 1 聲音，聲響。2 叫喊；嘈雜聲，噪音；喧鬧聲；吵鬧，騷動，騷擾。3 〈古語〉謠言，風聲。4 〈美國〉...
  1. 6 an algorithm of kurtosis signal - to - noise ratio ( ksnr ) based the mot - radiated noise polyspectrum feature extraction is presented

    6提出了基於峰度信噪比的水下h標輻射噪聲的多譜特徵提取演算法。
  2. For phase space reconstruction of ship - radiated noise, using auto correlation function and mutual information to select the delay - time, and using false nearest neighbors method to select the embedding dimension

    從自相關函數及互信息嫡兩個方面討論了相空間重構中延遲時間的選擇。
  3. Joint analysis of radiated noise from underwater vehicles based on wavelets and bispectrum

    水下目標輻射噪聲的子波變換和雙譜聯合分析
  4. The submarine noise detected by sonar consists of two parts : propeller - generated hydro - dynamical noise, which can be greatly reduced by improving the submarine rear shape ; radiated noise from the submarine structure excited by the centrifugal forces ( moments ) of rotatory machine, which is more complicated and influenced by many factors

    聲納所探測的潛艇噪聲包括兩部分，一是螺旋槳運轉帶來的水動力噪聲，二是潛艇主機工作時產生的不平衡力和力矩引起潛艇結構振動，帶動流場振動從而輻射噪聲。通過改進潛艇尾部線型設計，已將水動力噪聲降到比較低的程度，而結構噪聲則復雜得多，與許多因素有關。
  5. The simulation analysis of radiated noise from a gearbox cover of motorcycle

    摩托車變速箱端蓋輻射噪聲模擬分析
  6. Study on target recognition based on simulation model of ship radiated - noise

    基於艦船噪聲模擬模型的目標識別研究
  7. A new method of line - spectrum extraction of ship radiated - noise based on part imitate was proposed in this paper

    摘要提出了一種基於分段擬合的提取艦船噪聲信號功率譜中線譜特徵的方法。
  8. 2 ) the ship - radiated noise is studied by means of hos that includes bi - spectrum and tri - spectrum on the basis of analyzing the properties of the noise. then some features are extracted from bi - spectrum and tri - spectrum

    在對艦船輻射噪聲深入分析的基礎上，利用雙譜、三譜對艦船輻射噪聲進行了研究，指出了應用高階統計量的雙譜、三譜分析艦船噪聲的優越性。
  9. In this paper, many features of ship ' s radiated noise are extracted by the means of techniques in modern signal process, and the theory of information fusion is used for calculating basic belief assignment and identification and classification of targets

    本文應用現代信號處理技術的多種手段主要研究了艦船噪聲的多種特徵信息提取，應用信息融合理論重點研究了可信度分配、目標識別分類的信息融合實現等技術。
  10. It can be learned by analyzing the ship radiated noise signals using nonlinear methods that the ship radiated noise signals are n ' t rigid fractal signals, but there are positive maximum lyapunov exponents, this indicates that the ship radiated noise signals are nonlinear

    通過對艦船輻射噪聲進行混沌特徵分析，結果表明，艦船噪聲不具有嚴格分形性，但具有正的最大lyapunov指數存在，這說明艦船噪聲信號中有非線性成分存在。
  11. The ship radiated noise is analyzed and its 4 features are extracted from the envelop spectrum. the envelope of ship noise waveform can be demodulated utilizing hilbert transform, and the spectrum components with line rotation frequency of propeller shaft are extracted effectively by bispectrum, 1 ( 1 / 2 ) spectrum and 2 ( 1 / 2 ) spectrum analysis

    對于通過希爾伯特變換解出的艦船輻射噪聲包絡信號進行高階統計量分析，有效地提取出了艦船噪聲的雙譜、 11 / 2維譜、 21 / 2維譜等方面的特徵。
  12. Underway radiated noise

    航行輻射噪聲
  13. Feature extraction on frequency - domain of ships radiated - noise based on multiresolution analysis

    基於多解析度分析的艦船輻射噪聲頻域特徵提取
  14. Extraction and fusion of frequency - domain features from ship radiated - noise based on wavelet packet and - dimensional spectrum

    維譜的艦船輻射噪聲頻域特徵提取及融合
  15. The impact on the muffler performance is realized by the high - speed pulsation gas flow, which regenerates noises and strikes the acoustic elements of the muffler such as the pipe run, the body case and the separator plate to arouse the vibration radiated noise

    氣流影響消聲器性能的主要原因是發動機排氣的高速脈動氣流再生噪聲，其次是這種氣流會沖擊消聲器的管路、殼體、隔板等聲學元件，進而激發振動輻射噪聲。
  16. This is caused by the complexity of underwater target radiated noise and the variety condition of the sea

    這是由於水下目標輻射信號和海洋環境的復雜性、多變性造成的。
  17. After studying the mechanism of the underwater targets radiated noise, we learned that the signals are related to the correspondent dynamics

    對於水下目標輻射噪聲的產生機理，可以發現它們與相關動力學系統的結構有關。
  18. Research on longitudinal distribution characteristics of the radiated noise of a ship as a volume object

    作為體積目標的船舶聲輻射縱向分佈特性的研究
  19. The main work and originality in this thesis can be summarized as following : 1. analysis of acoustic characteristics of ship ' s radiated noise both in time and frequency domain, especially its deviation from the ordinary statistical signal. studies on two modern signal processing methods - higher - order statistics ( hos ) and wavelet transform

    分析了艦船輻射噪聲的通過特性、調制特性、譜特性與線譜的特徵及應用，特別分析了輻射噪聲譜的「三非」特性；研究了基於高階譜分析和小波變換的艦船輻射噪聲特徵。
  20. Simulation for torpedo radiated noise propagation properties

    魚雷輻射噪聲傳播特性的模擬
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