power spectral analysis 中文意思是什麼

power spectral analysis 解釋
功率光譜分析
  • power : n 1 力，力量；能力；體力，精力；（生理）機能；〈常 pl 〉才能。2 勢力，權力，權限；威力；政權；權...
  • spectral : adj. 1. 鬼的；鬼怪（似）的。2. 【物理學】光譜的。
  • analysis : n. （pl. -ses ）1. 分解，分析；【數學】解析。2. 梗概，要略。3. 〈美國〉用精神分析法治療（＝ psychoanalysis）。
  1. And the primary factors taking effect on the resolving power of the instrument have been analyzed. the basis of the theory of spectral biochemical analysis is the lambert beer law

    光譜生化分析的理論基礎就是朗伯比爾定律，分析了影響朗伯比爾定律的一些因素，以及吸收光譜與光譜帶寬之間的關系。
  2. For different channel condition, the simulation analysis presented the time domain waveform, power spectral estimate and error rate plot

    針對不同的通道條件，模擬分析給出了時域波形、功率譜估計和誤碼率曲線。
  3. For sand, glass bean, quartz sand and pvc, pressure fluctuations were measured at different conditions. furthermore, statistics analysis, power spectral density ( psd ) analysis and chaos analysis of pressure fluctuations in gas - solid cfb were conducted. an investigation of the effect of circulating solid flux, superficial gas velocity, height from riser bottom and particle property on the parameters ( e. g

    本文測定了河砂、玻璃珠、玻璃砂和pvc四種顆粒在不同固體循環量、不同表觀氣速、不同軸向高度下的壓力波動，進而對氣固循環流化床壓力波動時間序列進行了統計分析、功率譜分析和混沌分析。
  4. To study the periodical electromagnetic pulses with random timing jitter radiated by electromagnetic pulse transmitters, the psd ( power spectral density ) of periodical electromagnetic pulses with random timing jitter was obtained based on the analysis of the - function of the psd of timing jitter

    摘要針對工程實踐中電磁脈沖發射機輻射的隨機時間抖動周期性電磁脈沖信號，在分析隨機時間抖動周期-函數功率譜密度的基礎上，得出了隨機時間抖動周期性電磁脈沖串的功率譜密度。
  5. In the first session the fans vibration on - line monitoring system is realized with vc language, also compile auto power spectrum density function, cross power spectrum density function, autocorrelation function and cross correlation function etc spectral analysis function to carry through simple offline fault diagnosis

    首先用穩定性強、擴展性好的vc + +語言開發了通風機振動在線監測系統，並編寫了自功率譜密度函數、互功率譜密度函數、自相關函數和互相關函數等頻譜分析函數來進行簡單的離線故障診斷。
  6. Analysis of a forward link cdma signal spectral regrowth and adjacent - channel power ratio

    信號前向鏈路頻譜增生和鄰道功率比估計
  7. The frequency analysis results show conclusions as follows : 1. the relative valid spectral power is declined with the volume percentage of inclusions in terms of exponent curve and the tendency of negative direction is same to that of forward direction

    當ly12鋁合金細小夾雜物（小於0 . 16mm ）的體積百分數從0 0 . 35時，在35 50mhz的頻帶范圍內，超聲波形的有效譜功率按近似指數曲線快速下降，沿相反方向檢測時其變換趨勢相同。
  8. It is studied that small inclusions in aluminum alloy are detected by ultrasonic transmission method in this paper. frequency analysis of the ultrasonic signal is done. harmonic factor and relative valid spectral power are calculated

    本文採用超聲穿透法對ly12鋁合金板材細小夾雜物進行了檢測試驗研究，並對超聲信號進行了頻譜分析，計算了諧波系數和相對有效譜功率。
  9. In this paper, based on the wavelet theory which is considered an important breakthrough to fourier analysis, the variations of air temperature and precipitation during the recent 50 years in heilongjiang province have been analysed using the morlet wavelet transformation method. wavelet transformation with fourier power spectral analysis are compared

    本文以近年來被認為是fourier分析方法突破性進展的「小波理論」為基礎，採用morlet小波變換方法分析了黑龍江省近50年來的氣溫和降水的變化規律，並與傳統的功率譜分析結果進行了比較。
  10. The paper creatively proposes the idea ofusing ordinary pressure signals ; ( pressure in valve boxes ) as system feature signal to pickup fault characteristic eigenvectors and verifies the correction of the method through self - correlation analysis in the time - zone and power spectral and wavelet packet analysis in the frequency - zone

    為此，本文創造性地提出以常見的壓力信號（閥箱內的壓力）作為系統特徵信號來提取故障特徵向量的方法。這種方法信號測取簡單、處理方便，有著振動信號方法無法比擬的優點。
  11. In the paper, firstly, present the formulation and application of proper orthogonal decomposition of covariance and cross - power spectral density matrices are presented in the analysis of wind load effects on structures. then the dynamic response of linear structures subjected to random loads is analyzed by a technique called double modal transformation ( dmt ) that is expressed through a double series whose terms depend on structural and loading modes

    本論文中首先通過求相關矩陣和互功率譜密度矩陣特徵值問題給出了本徵正交分解的公式，並利用pod與結構模態相結合的雙模態方法來分析結構的動態響應，主要討論了截斷高階荷載模態對風致響應的影響。
  12. The mms raman spectrometer offers a unique combination of resolving power, spectral range and flexibility, making it an ideal system for the routine analysis of many types of liquids and solids

    Mms拉曼光譜儀提供一個獨特的綜合了分辨能力、光譜范圍及撓性的結合體，從而使其成為適合對許多類型的液體和固體進行常規分析的理想系統。
  13. The virtual digital signal processing instrument is developed with vc + + 6. 0 and matlab 6. 0 in windows 98. the system has realized signal generator, signal ' s sampling and averaging function, signal ' s power spectral density and cross special density analysis, the design and application of digital filter, signal analysis in time, frequency and inverted frequency domain

    該系統的工作環境為windows98 ，開發工具為visualc + + 6 . 0和matlab6 . 0 。實現了波形發生器的設計、信號採集及平均處理、濾波器的設計及應用、信號的時域、頻域以及倒頻域分析。
  14. Analysis and control of power spectral density for impulse uwb communications system

    脈沖超寬帶通信系統功率譜分析與控制
  15. Power spectral entropy of various frequency segments and its application to analysis electrocardiogram

    不同頻段功率譜熵及其在心電分析中的應用
  16. The digital msk demodulation based on the dsp system employed the theory of power spectral analysis to demodulate the digital msk modulated signal

    在本文中的數字化解調是基於dsp系統，並利用功率譜估計的理論對msk已調信號進行功率譜的估計來實現的。
  17. In this paper, ar power spectral density estimate by way of burg is provided in analysis and capturing the feature of adventitious respiratory sounds

    利用bp神經網路對異常呼吸音進行分類識別，提出了評價人體呼吸系統生理狀況的方案，這對分析病人的呼吸系統疾病有重要意義。
  18. The power spectral analysis is performed for daily 500hpa height field data in the mid - high latitudes of the northern hemisphere from 1950 to 1996. the results show that : ( 1 ) intensity of low - frequency oscillation in winter is stronger than that in summer

    應用1950 - 1996年北半球中高緯逐日500hpa高度場資料進行功率譜分析，得出： （ 1 ）夏季低頻振蕩較弱，冬季低頻振蕩較強。
  19. ( 3 ) though the conventional fourier power spectral analysis can reflect the common characteristics of the signal, it cannot provide the fine structure of time - frequency changes and the location of the jump points, while the wavelet transforming can better the situation

    傳統的功率譜分析方法雖然能反映氣候信號變化的一般特徵，但無法反映時頻域變化的精細結構，也不能給出突變點的具體位置；而小波變換分析方法則可以很清楚地給出氣候信號變化的多層次結構和突變特徵。
  20. Because of the good sensibility, ultrasonic narrow band signal analysis technique with 1mhz central frequency was chosen to differentiate the heat treatment samples above - mentioned. there are obvious differences among heat treatment products in principal frequency, spectral peak ' s quantity, amplitude and distribution. that is to say, the technique of ultrasonic narrow band power spectral can be applied to characterize the microstructures of multi - phased alloy steels

    利用窄帶信號頻譜分析技術靈敏度高的突出優點，選取中心頻率為1mhz的窄帶超聲信號，對上述不同熱處理試樣進行超聲功率譜分析，發現不同熱處理產物在功率譜主頻率、譜峰特徵（幅度、數量、分佈）等方面，都存在不同程度的差異。
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