維格納分佈 的英文怎麼說

中文拼音 [wéigénàfēnbù]
維格納分佈 英文
wigner distribution
  • 維 : Ⅰ動詞1 （連接） tie up; hold together; link 2 （保持; 保全） maintain; safeguard; preserve; keep ...
  • 格 : 格象聲詞rattle; gurgle
  • 納 : Ⅰ動詞1 （收進來; 放進來） receive; admit 2 （接受） accept; take in 3 （享受） enjoy; take deligh...
  • 分 : 分Ⅰ名詞1. （成分） component 2. （職責和權利的限度） what is within one's duty or rights Ⅱ同 「份」Ⅲ動詞[書面語] （料想） judge
  1. The reassigned smoothed pseudo wigner - ville distribution ( rspwvd ) is introduced, which has less interference and higher resolution than other time frequency distributions like wigner - ville, choi - williams etc. it is used to detect the multi - knocking of engine such as cylinder, piston pin, valve, crank bearing, connecting rod bearing and jib knocking. a new fault diagnosis technique based on the rspwvd for the engine multi - knocking problem is proposed. by comparing the bispectrum and bicoherence of the gear vibration signals, it is demonstrated that bispectrum has an advantage over bicoherence for feature extraction of such signals

    第四章首次引入一種重分配方法，得到干擾項少而解析度高的重分配平滑偽魏格納維爾分佈（ rspwvd ） ；對發動機曲軸主軸承響、連桿軸承響、活塞銷響、活塞敲缸響、氣門響和挺桿響等常見機械異響故障振動信號特徵進行了全面地比較分析；通過對各種異響故障特徵信號的分析研究，提出基於rspwvd的發動機多異響故障診斷策略，利用該策略可以準確識別不同的發動機異響故障。
  2. We found that vlf / lf of hyper thyroibism sickness by using the 2 methods in are high than healthy person. study hrv wd, when using choi - williams window to restrain cross disturb, setting filter parameter a = 0. 05

    本文還對心率變異信號的維格納分佈作了研究，選用choi - williams窗，確定了濾波函數的參數= 0 . 05 ，實際證明抑制交叉項的干擾效果較好。
  3. Compact in configuration, mightiness in function, convenience in manipulate and high resolution, high efficiency, low cost are all the characteristics of this instrument. in the end, we give a brief introduce about some common analysis methods on oae signal. and lay a emphasis on wavelet and improved wigner - vill used in the analysis of soae and teoae, comparing with the tradition method, these new time - frequent methods have better time - frequent characteristic, are fitter for the oae signals

    最後，該文分別對耳聲發射信號的常用分析方法進行了介紹，並重點介紹了用小波變換、改進的維格納分佈等方法分別對soae信號、 teoae信號進行分析的情況，與傳統的處理方法相比較，時頻分析方法由於具有較好的時頻解析度，更適合於耳聲發射信號的分析。
  4. Analyzing real hrv, proving the every segment power ( high frequency > low frequency ) of projection in frequency axis is times with the every segment power by using fft, the lf / hf by using 2 method is primarily sameness. 3d figure is a trenchancy tool for doctor to look over the relation between time and frequency

    對實際的心率變異信號進行了維重慶大學碩士學位論文格納分析，證實通過計算三維時頻分佈對頻率軸的投影得到的各頻段（高頻段、低頻段等）功率，與直接用fft所得各頻段功率，二者只相差一個比例系數，並且二者lf hf的值基本相同。
  5. Fractional fourier transform of two - dimensional cosine - gaussian beams based on the wigner distribution function

    二維餘弦高斯光束基於魏格納分佈函數的分數傅里葉變換
  6. However, wigner - ville distribution is n ' t enough effective applied to multicomponent signals processing for existing crossed items, sometimes signal items completely ca n ' t be distinguished from distribution for serious disturbance of crossed items. in addition, we can utilize the wigner - ville distribution to reduce the random noise of signals in that wigner - ville distribution is n ' t enough sensitive to noise. in theory, radon - wigner transform of lfm signals produces a distinct maxima ( peak ) in the radon - wigner plane, so it describe effectively the feature of the lfm signals and suppress effectively the crossed items along with wigner - ville distribution. we can utilize the radon - wigner transform to reduce the random noise of lfm signals in that the noise distrbute as dot at random in the radon - wigner plane

    另外，維格納-威利分佈是完全有噪的，但它對噪聲是不敏感的，因此可以利用維格納-威利分佈實現對含噪信號的去噪處理。理論上線性調頻信號的radon - wigner變換在radon - wigner平面上以尖峰形式表現，因此radon - wigner變換能夠有效描述線性調頻信號的物理特徵，抑制在維格納-威利分佈中產生的交叉項。在radon - wigner平面中隨機噪聲是呈點狀隨機散布開的，因此利用radon - wigner變換還能對含噪線性調頻信號進行去噪處理。
  7. The paper brings out a method of model description which based on web after researching the meta - data of simulation model, and it points out the methods of model storage and management of model in hla after analyzing the technologies of model storing, management and version management. after that, this paper designs the framework of simulation model - base system based on web using technique of xml, database and web. it realizes some functions of the system, such as model storing, model searching, model deleting, model downloading, user managing, system maintenance, information releasing and so on

    論文從重用的角度研究了hla聯邦開發過程中的模型，首次對hla聯邦開發過程中所涉及的模擬模型進行了系統的分類;在深入研究模擬模型元數據的基礎上，提出了基於xml的模擬模型描述方法;論文在分析、歸納模型存儲、模型管理、版本管理等技術的基礎上，提出了hla中模擬模型存儲、管理的方法;由此綜合應用xml技術、數據庫和web等技術，設計了基於web模擬模型庫系統的結構框架，實現了模型存儲、查詢、刪除、信息查看、下載使用及用戶管理、系統維護、信息發布等功能;並實現了與kd - hla平臺中相關工具的集成，為分佈模擬進一步發展，如模擬網格的研究奠定了基礎。
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