signal extraction method 中文意思是什麼

signal extraction method 解釋
信號提權
  • signal : n 1 信號，暗號；信號器。2 動機，導火線 （for）。3 預兆，徵象。adj 1 暗號的，作信號用的。2 顯著的...
  • extraction : n. 1. 抽出，拔出。2. 【化學】提取（法）；萃取（法）；回收物，提出物；精煉。3. 精選，摘要。4. 血統，家世，出身。5. 【數學】開方，求根。
  • method : n 1 方法，方式；順序。2 （思想、言談上的）條理，規律，秩序。3 【生物學】分類法。4 〈M 〉【戲劇】...
  1. The tv goniometer is the ground control equipment of a model of anti - tank missile. it uses two ccd cameras and the signal extraction method of background counteract, which can make the guiding process of anti - tank missile wo n ' t interfered by sunlight, firelight of battle field, light, flame tracer etc. it can greatly improve the anti - interfering ability of the anti - tank missile system

    該電視測角儀是某型反坦克導彈武器系統的地面控制設備，它採用兩個ccd攝像機和背景抵消的信號提取方法，可使反坦克導彈的制導過程不受太陽的反光、戰場的火光、燈光、曳光彈等干擾。
  2. This method can reflect local signal feature and well perform in the experiments. we also present an integrated electromyographic signal ( emg ) pattern recognition scheme. the application of an artificial neural network ( ann ) technique together with a feature extraction technique, for the classification of emg signals is described

    利用高階譜技術提取肌電信號的特徵信息，然後利用奇異值或者其它方法對二維特徵矩陣進行優化，將優化之後的一維特徵向量輸入神經網路分類器進行模式識別，這種方法能夠初步識別不同模式的上肢運動。
  3. Abstract : with a view of time - varying characteristic of the v ibration signal measured on reciprocating machinery and a brief introduction to the wavelet analysis and a nonlinear wavelet denoising theory, the paper makes an approach, by taking an triplex pump widely used in heavy machinery as an exa mple, on the waveform feature extraction which reflects the various conditions o f reciprocating machinery with nonlinear wavelet denoising analysis method

    文摘:針對往復機械振動信號的非平穩時變特點，本文在簡述小波分析及非線性小波消噪理論的基礎上，以重型機械使用的三缸泵為例，研究了用非線性小波消噪方法提取往復機械狀態下的波形特性。
  4. An automated de - noising algorithm based on the energy of wavelet packet not donoho ' s threshold algorithm is established. a gear feature vibration signal extraction method using the wavelet packet energy is proposed, which can separate gear meshing vibration, noise vibration and gear fault vibration signal from the original gearbox case vibration signal. basis pursuit ( bp ) algorithm is introduced into the filed of mechanical signal de - noising and feature extraction for the first time

    第三章擺脫了donoho的閾值消噪思想，從能量的角度建立了基於小波包的自動消噪演算法；提出基於小波包能量分佈的齒輪故障特徵信號提取方法，可以將齒輪嚙合振動信號、干擾振動信號以及故障沖擊振動信號從原始齒輪振動信號中分離出來；首次將基追蹤消噪演算法引入到機械故障信號的消噪與特徵提取上，通過對齒輪故障信號的消噪，表明了它的有效性，並對影響該方法實際應用效果的因素進行了全面的分析，同時也指出了該方法存在的局限性。
  5. The results show that cold methanol extraction method has the best reproducibility ; highest signal intensities and can simultaneously detect more than 20 intracellular metabolites

    結果顯示，冰甲醇抽提的樣品在電噴霧質譜實驗中表現出良好的重復性和最高的峰強度，並能夠同時檢測到超過20種不同的胞內代謝物。
  6. It mainly includes following aspects : in this paper, firstly implication of wavelet analysis in signal harmonic component extraction is presented in detail, and on this foundation signal given frequency band component extraction method is proposed. then we investigate frequency aliasing phenomenon, reason why frequency aliasing phenomenon is easy happened when wavelet is implied in field of motor fault diagnosis, and frequency bands where frequency aliasing phenomenon is easer happened, and put forward approved morlet wavelet analysis method which can effectively alleviates frequency aliasing phenomenon. third we set up vibration signal detected system, design experiments to obtain three groups of fault signals : eccentricity fault, mixed fault of eccentricity plus mild rub, mixed fault of eccentricity plus moderate rub, and process these data using analysis method proposed in this paper

    首先對論文的選題以及相關背景進行了探討，並對相關的小波基礎理論進行了闡述，主要針對感應電動機的偏心故障和偏心+碰摩復合故障形式及相關的應用演算法進行了詳細探討，主要工作內容包括下面幾個方面:在論文中，首先對小波分析在信號的諧波分量提取中的應用進行了研究，在此基礎上，提出了信號的特定頻帶成分的提取方法;研究了小波分析的頻域混疊現象，探討了小波分析應用於電機故障診斷領域時易發生頻域混疊現象的原因，以及混疊現象較易發生的頻帶，提出了可以有效減輕頻域混疊現象的改進的morlet小波分析方法;搭建了振動信號檢測系統，設計實驗採集得到三組故障數據:偏心故障，偏心+輕微碰摩復合故障，偏心+中度碰摩復合故障，並對這些數據應用本文提出的分析方法進行信號處理，提取出的特徵參數可有效區分這兩種故障形式;研究了基於matlab和labview的混合編程方法，完成了電機故障檢測系統的軟體開發。
  7. This dissertation concentrates on the difficult problems that the pipeline or pipe defects are not estimated or evaluated quantitatively, intelligently by mfl ( magnetic flux leakage ) inspection method. from the practical demand, theoretical analysis and experiments or testing, the mfl inspection technology of pipeline or pipe defects are explained, summarized in detail in the whole paper, at the same time, the relationship between the mfl field distribution, the mfl signal shape and the defect geometry or severity, the analysis of the mfl data and the compensation of influencing the relationship factors, signal feature extraction, intelligent recognition of defect parameters and so on are studied systematically

    論文針對管道（鋼管）缺陷漏磁檢測定量化、智能化的難題，緊密結合檢測現場實際需要，通過理論分析和大量實驗，系統分析總結了管道（鋼管）缺陷漏磁智能檢測技術，並在缺陷漏磁場分佈以及缺陷漏磁信號與缺陷外形參數間的關系、缺陷漏磁信號分析、漏磁信號影響因素補償、缺陷漏磁場波形特徵提取和缺陷外形尺寸定量識別等方面進行了深入研究，主要成果和創新如下：引出磁偶極子模型近似分析常見缺陷漏磁場，針對磁偶極子模型的不足，將有限元方法應用到缺陷漏磁場分析，實現了常見管道樣本缺陷漏磁場的模擬。
  8. For those biological signals like echo of bat or whale, as well as man - made system signals like radar or sonar signal, the instantaneous frequency of signal component contains important information and could be used for signal model parameters extraction. so that the proper choose of transformed domain and signal characteristic extraction method is of crucial important. the ridge extraction method used for signal characterization was first proposed in the 1990s, it ' s based on the study of the phase of the wavelet ( or other linear ) transform

    對于許多實際的信號，如蝙蝠發出的超聲波、鯨魚的叫聲等生物信號，以及雷達、聲吶等人造系統產生的信號而言，信號瞬時頻率的變化規律反映了信號重要的特徵，並且也是信號模型中關鍵的參數，因此選擇合適的變換域提取信號的瞬時頻率信息，並選擇合適的方法對信號進行重建是很重要的問題。
  9. An inductance extraction method for on - chip signal lines based on halo rules

    規則的片內信號線寄生電感提取法
  10. With a view to time - varying characteristic of the vibration signal measured on triplex reciprocating pump, an approach on the waveform feature extraction which reflects the various conditions of reciprocating pump with nonlinear wavelet de - noising analysis method is presented

    針對三缸往復泵測量信號非平穩時變特點，研究了用小波消噪方法提取反映往復泵動力端狀態的振動波形特徵。
  11. Linear prediction code and mel - scale cepstrum coefficients are effective method in speech feature extraction and important in speech signal processing

    線性預測分析和mel倒譜分析是對語音信號特徵提取比較有效的兩種方法，在語音信號處理中有著重要的應用。
  12. This paper studies the helicopter, the propeller - driven aircraft and the turbofan jet airplane echo modulating feature parameter model and analyses the echo signal feature. it gains the target echo ’ s the cyclical modulation feature by using the complex ar frequency range bispectrum slice. because traditional method in extraction airborne radar ’ s radiant signal feature time has certain insufficiency, this paper proposes the approximate entropy and the norm entropy as the passive feature parameter in the airplane

    由於傳統方法等在提取機載雷達輻射源信號特徵的時候存在著一定的不足，本文提出把近似熵和范數熵作為飛機目標識別的無源特徵參數，給出了提取相應特徵熵的演算法，實現對機載雷達輻射源信號的識別，通過和機載雷達類型的匹配，實現對目標的識別。
  13. A novel signal processing method based on alternate feature optimization is introduced and analyzed in this thesis. and a new underwater target recognition system using the optimized feature and svm is presented here. the system utilizes the alternate feature extraction method to optimize the feature selection process

    提出了高階量1 （ 1 / 2 ）維譜和小波變換交互分析進行特徵提取的方法，比較好地反映了艦船輻射噪聲的非線性、非平穩和非高斯特性。
  14. Many methods of pitch detection are developed so far, in this thesis the pitch detector using waveform transform is adopted. according to the problem appearing in pitch extraction experiment, a novel algorithm of pitch detection is presented. the pitch points in speech signal exhibit local maximum across several consecutive dyadic scales, and their positions are similar, so the improved approach selects pitch points by vote strategy, not by traditional method

    基頻提取的方法很多，本文採用了小波變換方法，該方法對部分語音得到了較好的結果，但對大部分語音提取的基頻中含有較多錯誤，經仔細分析和研究，本文對它進行了改進，提出了一種基於小波變換的語音基頻檢測新演算法。
  15. Research on the extraction method of time - domain symptoms based on wavelet packet decompositions of mechanical fault signal

    機械故障信號小波包分解的時域特徵提取方法研究
  16. Because reciprocating pump has complicated structure and more exciters, so its signal is a strong non - stationary signal, and carrying out fault feature extraction and diagnosis is very difficult to it, this text mainly researches on featute extraction of reciprocating pump ’ s valve vibration signal. this text introduces hht that huang put forward, it is a kind of signal processing method that suits for dealing with the stationary signal, and suits for non - stationary signal also. although the hilbert - huang transform ( hht ) is an effective tool processing the non - stationary signal, the hht based on emperical mode decomposition ( abbreviated as emd ) algorithm which adopts the cubic spline interpolation could n ' t acquire accurate characteristics for the strong non - stationary signals in that the spline produces an accurate result only under the condition that the data consists of values of a smooth function

    本文引入了huang等人提出的hht ， hht是一種既適合於處理平穩信號也是一種適合於處理非平穩信號的信號處理方法。盡管希爾伯特-黃變換（ hht ）是處理非平穩信號的有效工具，但基於經驗模態分解（簡稱emd ）的hht由於採用三次樣條插值而不能準確提取強非平穩信號的特徵，因為三次樣條插值只有在數據由光滑函數值構成的情況下才能產生精確的結果。為了解決這個問題，本文提出了基於改進的emd演算法，即採用分段三次hermite插值多項式（ pchip ）作為極值包絡的方法。
  17. Aiming at the present problems, this thesis studies the pd signal extraction of pulse current method （ pcm ） in two directions : signal propagation and interference suppression

    本文針對現存的問題，從局放信號的傳播和干擾的抑制兩方面研究了脈沖電流法用於變壓器局部放電在線監測。
  18. 5 ) estimated error power of noise and atmospheric term using fractal signal parameters estimation method based on wavelet ", and then weighted combined multi - temporal insar data to eliminate atmospheric effects to dem extraction

    5 ）利用基於小波變換的分形信號參數提取，得到噪聲項和大氣項對dem影響的誤差功率，在此基礎上將多時相干涉sar數據進行權重融合，以降低大氣和噪聲對所提取的dem精度的影響。
  19. Harmonic component extraction from a chaotic signal based on emd method

    方法的混沌信號中周期分量的提取
  20. Research on a extraction method for weak fault signal and its application

    一種弱故障特徵信號的提取方法及其應用研究
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