cwt 中文意思是什麼

cwt 解釋
本楚
  1. The other research purpose is to discover characteristic information and reliable methods of reflecting spinal cord damage. due to typical damage indicators, amplitude and latent period, have bugs such as limited information and weak stabilities, this project recommends applying time - frequency analysis to monitoring spinal cord function. through analysing and comparing typical signal with stft and cwt, it is proved indicators under time - frequency distribution can be better in reflecting signal changes, espcially the wavelet transformation

    針對目前ep監測中判定脊髓損傷的指標（波幅和潛伏期）存在信息量相對較小、穩定性較差的缺陷，本課題提出利用時頻分析技術對術中脊髓功能監護進行研究，通過短時傅立葉變換和小波變換分析和比較典型信號的時頻分佈，證明時頻特徵參數能更有效的提取信號的變化信息。
  2. Aiming at five kinds of targets from geneva lake which are rock, sand, pebble, grit and sullage, the features we extracted based on the cwt time - frequency matrix are singular values, some parameters of histogram and invariant moment

    針對萊蒙湖底的巖石、沙、卵石、砂礫、淤泥等五類目標，文中所提取的特徵主要有時頻矩陣的奇異值、直方圖的有關參數以及不變矩等三類特徵。
  3. Wideband ambiguity function ( waf ) is the powerful tool to analyze the wideband signal, and it is also coherent to cwt

    寬帶模糊度函數是寬帶信號分析的有力工具，它與連續小波變換也是內在一致的。
  4. The basic theory of wideband signal processing is discussed and presented. the coherence among cwt, wcp and waf is pointed out emphatically

    論述了寬帶信號處理的基本理論，指明了連續小波變換與寬帶相關處理、寬帶模糊度函數的一致性。
  5. And the resemblance is pointed out between continuous wavelet transform ( cwt ) and waf. in the course of computing waf, the scaling replica is very important. based on the properties of cwt, three approaches have been proposed for the scaling of a wavelet that has no analytic form

    詳細闡述了寬帶信號及系統的三個條件、寬帶系統的回波模型和寬帶模糊度函數的概念，指出了連續小波變換（ cwt ）與寬帶模糊度函數的驚人相似之處。
  6. Based on the method, this dissertation deals with several kinds of signals including cosine wave ( cw ), linear frequency modulated ( lfm ) and multi - component signal, furthermore the systematic comparison of estimation effect among cwt and several other usual methods as well cramer - rao bound ( crb ) is given

    基於上述方法，文中分別對單頻矩形脈沖信號、線性調頻脈沖信號以及多分量信號進行了瞬時頻率估計，並與其他幾種常用瞬時頻率估計方法的性能以及crb進行了系統比較。
  7. During the instantaneous frequency estimation of lfm, there exists some error in the edge, so in the dissertation, a fitting method is proposed to modify it. from the computer simulation, the following result is obtained : for cw, the method based on cwt is most effective, and with the snr rising, the error curve of it is more and more closer to crb. for lfm, the method based on wvd gives the best result, and the effects of cwt and stft are similar for multi - component signal, compared to stft and wvd, cwt is a better choice

    通過模擬發現，在單頻回波的瞬時頻率估計中，基於cwt的方法最為有效，隨著信噪比的提高，其均方誤差曲線越來越接近克拉美?羅界；在線性調頻回波的瞬時頻率估計中， wvd法得到的效果最好，而cwt與stft法的估計效果比較接近；在多分量信號的瞬時頻率估計中，相對于stft和wvd法， cwt法是一個更好的選擇。
  8. At first some modification is made in conventional beam forming of frequency domain, namely to estimate doa by arrays outputs on compensated spacial frequency points of echoes. then the cwt is utilized to signal processing in space - frequency domain for estimation of doa, and the corresponding modification is also made. in the dissertation, the computer simulations of doa estimation for both narrow - band and wide - band echoes are given, so do the necessary comparison among several methods and crb

    首先在傳統的頻域波束形成演算法的基礎上，提出對寬帶信號的頻率補償，也即對寬帶回波信號的各空間頻率根據時間頻率的差異進行相應補償，然後對各陣元輸出求和來得到方位估計；其次將連續小波變換引入到空間?頻率處理中，從而完成對目標方位的估計，並進行了相應地補償。
  9. Please clear through the customs, making entry in our name, and declaring weight at75 cwt., value 1, 000

    該貨物重量75英擔，價格1000英鎊，請以本公司名義，向海關報關。
  10. In this paper, a single - frame fringe analysis method is presented, in which subdivided fringe is modeled by linear phase and the coefficients are extracted by complex wavelet transform ( cwt )

    摘要本文提出了利用復數小波變換對干涉圖象相位進行分塊線性擬合的一種新穎的單幀干涉圖象分析方法。
  11. This paper also deduced the theorems and formulas of the cwt, applied and proved them in the processing of the pulse signals

    本論文還對連續小波變換的定義和計算公式進行了證明，並在脈象信號處理中對演算法進行了應用和驗證。
  12. The " simple " method based on cwt is inducted to underwater signal processing to estimate the instantaneous frequency of echo. in essential, this method is to extract the wavelet ridge from the maximum of continuous wavelet transform, according to the corresponding relationship between wavelet ridge and signal frequency, finally to obtain the estimated instantaneous frequency

    文中將基於連續小波變換的『 simple 』方法引入到水下信號的瞬時頻率估計中來，也即通過尋求連續小波變換幅值的最大值來得到小波脊，再根據小波脊與信號頻率之間的對應關系，最終完成信號的瞬時頻率估計。
  13. We offer you our sugar at 34s. per cwt, with 3 % discout against cash in 14 days ex railway station here, delivery on the 10th october

    有關砂糖茲向貴方報盤如下，價格為34先令/英擔，交貨后14日內付現匯， 3 %折扣， 10月10日本地火車站交貨
  14. These years wavelet theory has been widely applied in underwater signal processing. whereas its excellent time - frequency localization, this dissertation takes continuous wavelet transform ( cwt ) as research tool and devoted to systematic research and deep exploration of two aspects in underwater signal processing field - estimation of parameters and target classification and identification

    近年來小波分析在水下信號處理方面的應用得到了長足的發展，鑒于其良好的時頻局部化特點，本文將基於連續小波變換的時頻分析作為工具，就參數估計和目標識別兩方面的問題做了系統研究和深入探討。
  15. 5 5 20 specifications for ball ends for swaging on cable for aircraft suitable for 5 cwt. cable

    航空用鋼絲繩型鍛球形端頭規范
  16. The cwt is a powerful tool in analyzing the unstable signals and has been used in signal processing

    連續小波變換是分析非平穩信號的有力工具，在信號處理上有廣泛的應用。
  17. Continuous wavelet transform ( cwt ) analysis at noaa / avhrr thermal data ( channels 4 when present ) was made by the approach of the isotropic 2d mexican hat wavelet

    摘要利用二維連續小波變換（墨西哥帽小波） ，結合影像下的地物類型分佈，對多時相的noaa / avhrr影像4波段數據進行信號場分析。
  18. E there is one - to - one map between the mathematical formulation and circuit realization, and that the method is systematic and suited for designing the network function with zeros and high - order filter. at last, the limitation and applied fields of the methods for realizing one - dimension cwt based on state - space log - domain filter are pointed out, it is also proved by the theoretical analysis and calculation results that the methods are suited for synthesizing the wavelet functions with very small scale or the frequence - transloction version of the mother wavelet ( with much translocation in frequence - domain )

    論文還給出了用狀態空間對數域濾波器實現一維連續小波函數的限制條件，並指出了這種實現方法的應用范圍，理論分析與計算結果表明該方法適合用於實現尺度很小的小波函數或由原基小波經頻譜搬移（搬移程度較大）后的小波函數。
  19. Also discussed the methods on how to realize the cwt both in time - domain and frequency - domain and how to design the gm - c bandpass filter used in realization of cwt. in order to optimize the performance of gm - c filter, linearization techniques are investigated and proposed. due to process variation and parasitics, an automatic tuning is designed for center frequency / 0 and quality factor q also, in this thesis, 16 - channel analogue cmos cwt circuit has been realized

    論文圍繞連續小波變換的模擬電路實現這一熱點問題，討論了連續小波變換的時域和頻域實現方法；具體分析了并行結構與串列結構的優缺點；研究了頻域法中的跨導-電容帶通濾波器的設計；給出了改善跨導輸入級傳輸特性的線性程度並擴大線性范圍的具體方法；設計了片內自校正（可調諧）環節使濾波器參數自動調整到設計標準值；最後給出了16通道濾波器組實現小波變換的方法。
  20. Scott was also former general manager of carlson wagonlit travel ( cwt ) australia, where his played a key role in the growth of cwt s business in australia and expansion into asia

    郭保成先生曾任澳洲carlsonwagonlittravel （ cwt ）總經理，主責擴展cwt在澳洲的業務，並延伸至亞洲地區。
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