extraction of signal 中文意思是什麼

extraction of signal 解釋
分出信號
  • 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。
  • of : OF ＝Old French 古法語。
  • 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...
  1. The system fulfills following functions : signal de - noising, signals analysis using wavelet and extraction of character parameters ; display analysis result and give out tocsin

    該系統能夠完成如下功能:信號去噪;對數據進行小波分析，提取特徵參數;顯示結果，給出故障警報。
  2. In modern shortwave communication, the length of signal existence time in single channel is very short for reducing the probability of being intercepted, thus the difficulty of signal detection and extraction increased

    摘要在現代短波通信中，作為低截獲率通信手段之一，單個通道內信號持續時間大大縮短，從而增加了信號檢測與提取的難度。
  3. In order to study the effect of weak noise on the sound signal extraction of mouse ( mus musculus km ) inferior collicular ( ic ) neurons from environment, we examined the change in frequency tuning of neuron induced by a weak noise relative to 5 db below minimum threshold ( remt - 5 db ) of tone. 12 healthy adult mice ( 20 - 25 g, b. wt. )

    本實驗旨在探討弱噪聲對小鼠（ musmusculuskm ）中腦下丘（ inferiorcolliculusic ）神經元聲信號提取的影響及其神經機制，我們選用相當于純音閾下5db的白噪聲（ whitenoise ） ，比較加入噪聲前後神經元頻率調諧曲線的變化和注射-氨基丁酸（ - aminobutyricacid ， gaba ）能受體拮抗劑荷包牡丹堿（ bicuculline ， bic ）后對該變化的影響。
  4. Aerospace series - circuit breakers - test methods - insertion and extraction forces of signal contact terminals

    航空航天系列.斷路器.試驗方法.信號接線柱的插入力和拔出力
  5. 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。
  6. The analysis is also given on the sphere of application, the complexity of computation. after the extraction of the precise tdoa signal, it is the major problem

    在提取到準確的時差信號后，論文第四部分就如何獲取精確的目標輻射源位置，即定位演算法進行了研究，主要分析了非線性定位方程組的求解技術
  7. The practical methods of signal pre - processing ( anti - disturbance filtering, data smoothing ) and character extraction ( differential limitation, absolute peak value, peak - to - peak value, area of wave and self - adaptive threshold adjustment ) are introduced

    並介紹了一些實用的信號處理和特徵提取演算法，包括可以實時運算的用於抑制干擾的濾波器和數據平滑演算法及用於定量分析的差分超限數、絕對峰值、峰-峰值、波形下面積和自適應門限調整等演算法及其應用。
  8. Study on wavelet denoise and characteristic extraction of echo signal to flaw classification in ultrasonic testing

    超聲檢測缺陷分類的降噪及特徵提取問題研究
  9. Extraction of the in - pulse characteristics of signal based on direct sampling from if signal and quadrature coherent detection

    基於中頻直接采樣正交相干檢波技術的信號脈內特徵提取
  10. As a result, the extraction of weak signal from strong chaotic noise has been a research focus and also a difficult problem in these recent years

    因此，檢測湮沒在強混沌背景下的微弱信號是目前國內外研究的熱點和難點。
  11. 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。
  12. 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。
  13. This thesis referred to the applications of neural network and wavelet transform theory in power system, used the function of mode identification and mode classification of ann and the function of signal extraction of wavelet transform, and established the model of single - phase reclosing based on wavelet neural network. through simulating a line model, the paper approved its feasibility

    本文借鑒神經網路和小波變換理論在電力系統中的應用，運用人工神經網路模式識別與模式分類和小波變換信號提取功能，建立了基於小波神經網路的單相重合閘的模型，並通過對一線路模型的模擬，證實了它的可行性。
  14. Research on feature extraction of impulse signal using walsh transform

    變換對沖擊信號序列特徵提取的研究
  15. Aerospace series - circuit breakers - test methods - part 509 : insertion and extraction forces of signal contact terminals

    航空航天系列.斷路器.試驗方法.第509部分:信號接線柱的插入力和拔出力
  16. Aerospace series - circuit breakers - test methods - part 509 : insertion and extraction forces of signal contact terminals ; german and english version en 3841 - 509 : 2004

    航空航天系列.斷路器.試驗方法.第509部分:信號接線柱
  17. Detection and extraction of signal transients and their applications in fault diagnosis

    信號瞬變成分檢測與提取及其在故障診斷中的應用
  18. The ridge characteristic related closely to the instantaneous frequency of the signal. a serial of ridge extraction and signal reconstruction algorithms have been developed using phase or module information of parameters on the ridges

    由此發展出一系列根據變換域參數的相位信息、模值信息等提取脊的方法，同時也發展出各種利用脊上的信息對信號進行重建的方法。
  19. Some of the signal characteristics can be better presented in certain transformed domain, so that in order to describe such features, it being necessary to study the character extraction and signal reconstruction algorithms based on information from transformed domain

    信號的某些特徵在變換域上能夠得到更好的表示。為了進行信號特徵的提取，需要將采樣得到的時域信號在相應的變換域上表示出來，從而得到對信號特徵更好的描述並進行提取。
  20. The binarization, dilation and thinning of interference pattern are stressed. computing the excursion of interference pattern based on fourier transform is based on the fact that interference pattern has different phase at different position, the signal extraction of interference pattern and phase unwrapping algorithm are mainly discussed. computing the excursion of the interference pattern based on the interference pattern intensity distribution is to position the fringe according to the intensity distribution characteristic

    基於圖像處理計算干涉條紋漂移量，目的是抽取干涉條紋的骨架，通過條紋骨架的定位實現對條紋的定位，重點討論了條紋圖像的二值化、膨脹和細化；基於傅里葉變換計算干涉條紋的漂移量，是基於條紋不同位置處的相位不同這一事實，重點討論了干涉條紋信號的提取和干涉條紋相位去包裹演算法；基於條紋亮度分佈計算條紋漂移量，是根據條紋自身亮度分佈的特點對條紋進行定位。
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