類噪聲信號 的英文怎麼說

中文拼音 [lèizàoshēngxìnháo]
類噪聲信號 英文
noise like signal
  • 類 : Ⅰ名1 （許多相似或相同的事物的綜合; 種類） class; category; kind; type 2 （姓氏） a surname Ⅱ動詞...
  • 噪 : 動詞1. （蟲或鳥叫） chirp 2. （大聲叫嚷） make noise; make an uproar; clamour
  • 號 : 號Ⅰ名1 （名稱） name 2 （別號; 字） assumed name; alternative name3 （商店） business house 4 （...
  1. The process of feature extraction is to transform the eradiate noise signal to different feature space and extract the feature vectors that reflect the category of the input sample. the extracted features are the input modes to the classifier

    特徵提取的過程是把輸入的船舶輻射噪聲信號變換到不同的特徵空間，提取出反映樣本的類別特性的特徵向量，並把其作為分類器的輸入模式。
  2. Because the speech signal is periodicity at sonant which vocal cords surge in low frequency and similarity to white noises at surd, the pitch can be detected in traditional way through the correlation operation without the speech produce model

    在人類語音的濁音段，聲帶發生較低頻率的振蕩，語音信號呈明顯的準周期性，而在清音段，語音信號則類似於白噪聲。
  3. That is the reason that all over the countries have never stopped researching for mask jamming technology of radar. at present, the mask jamming source mainly comes from the thermal noise and zener avalanche noise of semiconductor devices. but the noise ’ s quality isn ’ t stabile because of the differences of semiconductor devices each other and the changes of exterior conditions

    目前採用的遮蓋性干擾的噪聲源主要來自半導體器件本身的熱噪聲或齊納雪崩噪聲，但各器件本身的不一致性和外界條件變化等因素使噪聲輸出質量不穩定;同時由於此類信號不能再生，不利於科學研究。
  4. The same types of approaches have been used in order to improve the quality of decoded signals in other coding schemes, reducing different kinds of artifacts, such as ringing, blurring and mosquito noise [ 3. 34, 3. 35 ]

    同樣的方法也已經在其它編碼方案中用於改善解碼信號的質量，減小各類噪聲，例如振鈴、斑點和哼聲。
  5. But, the eeg signal that we can acquired is very weak and is badly contaminated by strong background noise, such as electrooculogram ( eog ), electrocardiogram ( ecg ), and line noise ( 50hz or 60 hz power frequency interference ), etc. eeg is a typical non - stationary random signal with a certain extent of non - gaussian and non - linear character

    但是我們能夠獲得的腦電信號一般非常微弱、並伴有很強的背景噪聲，是一類典型的非平穩的隨機信號，且存在一定的非高斯性和非線性。傳統的分析處理方法一般將腦電信號近似認為是線性的準平穩的高斯分佈隨機信號，這使得分析結果往往不能令人滿意、實用性差。
  6. The detection performance of receiver to noise jamming signal was improved remarkably by accumulation detection

    通過積累檢測顯著地改善了接收機對噪聲干擾類信號的檢測性能。
  7. In this paper, many features of ship ' s radiated noise are extracted by the means of techniques in modern signal process, and the theory of information fusion is used for calculating basic belief assignment and identification and classification of targets

    本文應用現代信號處理技術的多種手段主要研究了艦船噪聲的多種特徵信息提取，應用信息融合理論重點研究了可信度分配、目標識別分類的信息融合實現等技術。
  8. The new algorithms for classification of mpsk, mask and mqam signals using cumulant invariants are proposed in gaussian noise and ideal communication channel environment. the new classification features are blind to unknown snr and reference phase

    提出了在高斯噪聲和理想通道環境下，基於高階累量不變量特徵的mpsk 、 mask和mqam信號調制分類演算法，新特徵對信噪比和未知的參考相位參數是盲的。
  9. But eeg signals recorded in the ward exposed to various noises and interference is less effective in the eeg analysis

    但是病床邊採集的腦電信號易受各類噪聲和干擾的影響，往往影響後面的分析效果。
  10. Some valuable conclusions are summarized by theoretical analysis and simulation experiments : from the side of signal processing, pulse jamming can be deleted by the method of time - domain sliding window accumulation and can be restored by interpolative prediction. ; gauss white nose can be attenuated while jamming disperse point - target by the method of time - frequency analysis in time - frequency domain. ; radio frequency noise jamming can be deleted by the method of average range frequency spectrum and notching in frequency domain

    通過大量的理論分析和模擬實驗，得到了一批具有一定價值的結論：從信號處理的角度出發，對于脈沖式干擾，能夠運用時域滑動窗口積累的方法去掉，並且通過預測插值得到較好的恢復；對于高斯白噪聲干擾，在時頻變換域內應用時頻分析方法可減小其對分散點目標的干擾；對于射頻噪聲，通過平均距離頻頻法和頻域陷波的方法可以去掉；從改變合成孔徑雷達系統角度出發，類似雙基地雷達能夠避免各種干擾，對發射信號進行調幅，調相以及改變調頻斜率都是較好的抗干擾方法。
  11. Rolling bearing ’ s vibration signal has a strong background yawp, the different fault cause the different characteristic of vibration. particularly the scathing fault, will not only cause the low frequency impact vibration, but also rise the high frequency inherence attenuation vibration of the bearing

    滾動軸承振動信號具有背景噪聲強、不同故障引起不同特徵振動的特點。尤其是損傷類故障，不但會引起低頻沖擊振動，還會激起軸承系統的高頻固有衰減振動。
  12. The main contents of this thesis include : ( 1 ) summarize and analysis of the theories on vibration transmission through rolling element bearings ( 2 ) based on the threshold setting and signal ’ s statistical approach, a method for solving the problems of denoise was developed ( 3 ) using sparsity and clustering, the method and hypotheses for underdetermined blind source separation was studied ( 4 ) the method based on potential function clustering was given for underdetermined blind source separation of noisy signals based on the assumption that the input distribution is sparse and the mixture procedure is linear, the attenuation matrix and the delay matrix were estimated by clustering. the approach was experimentally illustrated for the case of m = 2. the separation of the signals from bearing test bed proved that the given methods are available and reliable

    在需求分析和研究現狀分析的基礎上，本論文針對如下內容進行了重點研究: （ 1 ）以滾動軸承為例，對旋轉機械振動信號的傳輸進行了歸納分析; （ 2 ）通過設定某一門限並研究信號間的統計特性，研究了旋轉機械振動信號的盲源分離過程中噪聲消減策略; （ 3 ）應用稀疏信號分析和聚類分析方法，對盲源分離中欠確定問題的假設條件進行探討並對分離方法進行了分析; （ 4 ）採用基於勢函數聚類分析的方法，研究了欠確定前提下含噪聲測量過程中信號盲源分離方法。
  13. It is widely used in both civil and military areas now. since sar and polarimetric sar is a coherent imaging system, its inherent speckle noise will produce important influence on the post - processing of sar images, such as target detection, classification and recognition, etc. so, speckle reduction becomes to the first step of sar images post - processing

    由於sar和極化sar的相干成像特性，其固有的相干斑噪聲嚴重影響了后續目標檢測、分類和識別等應用，因此相干斑的抑製成為sar和極化sar圖像后處理的第一步，這種噪聲的抑制方法一直是極化sar信號處理領域一個很值得探討的問題。
  14. A sorting method of the helicopter noise sources is given. the temporal waveform and spectrum of the noise signature is analyzed. at last, the sound pressure spectrum density level is estimated with the experimental data taken from a specific navy helicopter

    扼要闡述了直升機噪聲的產生和分類，考察了直升機信號的波形和頻譜特徵，並對特定的直升機噪聲的聲壓譜密度級進行了計算。
  15. Higher - order cumulants are blind to additive gaussian noise ( white or colored ) and this is the theoretical advantage of higher - order cumulants. secondly, the thesis introduces the doa problems and the widely used music method. to overcome the shortcomings of the traditional music method, the thesis proposes the foc - music method, which has better performance than the traditional music method

    本文首先介紹了高階統計量的定義和性質，特別指出了高階累積量對加性高斯（白色或有色）噪聲的盲性，這是利用它進行波達方向估計的理論優勢;其次，文中介紹了波達方向（ doa ）估計問題和doa估計中應用最廣的多信號分類法（ music ） 。
  16. Based on the criterion of maximizing the total average signal to interference plus noise ratio ( sinr ), the optimal subchannel allocation strategy is obtained in theory when random signature sequences are used. for its implementation, an iterative algorithm is proposed, which is similar to the water filling principle. by using the proposed algorithm, we obtain significant improvement on the performance of the system, and the transmission quality can be guaranteed

    根據最大信號干擾加噪聲比原理，分析得出了隨機特徵碼條件下最優的子通道分配策略，並提出了一種類似於灌水原理的子通道分配演算法，該演算法能在保證各個用戶傳輸質量的前提下，使系統的整體性能接近最優。
  17. The arithmetic formulas for sine wave, linear frequency modulation signal, v - style frequency modulation signal, white noise signal, reverberation signal and echo signal are given by their definition

    根據信號類型的定義，給出了正弦信號、線性調頻信號、 v型調頻信號、白噪聲、混響和回波信號的合成公式。
  18. It is shown in mechanism analysis that 1 / f noise originating from border traps is ~ sensitive to both of the oxide charges and interface traps induced by esd and hci and the similarity coefficient can express the local characterization more thoroughly, while the changes of electrical parameters usually lie on one of the defects

    機理分析表明，起源於邊界陷阱的1 / f噪聲對于靜電和熱載流子誘發的氧化層電荷和界面陷阱兩類缺陷都同時敏感，而相似系數更能反映1 / f信號的局域特性，但電參數的變化通常主要取決于其中一類缺陷。
  19. The results of the experiment show that the peak value, rms, standard deviation, crest factor, kurtosis value and impulse value of the vibration signals can distinguish between the normal and abnormal conditions of the ball bearing when the level of noise is low

    常用包絡解調技術對此類信號進行分析，但易受噪聲影響，使得齒輪或滾動軸承的故障特徵難以凸顯。本文從研究相關函數的特性入手，經理論證明，發現自相關函數並不改變調制信號的調制特徵，但具有顯著的降噪特點。
  20. In the wi coder, the speech signal is represented by an evolving characteristic waveform ( cw ). the cw is decomposed into a slowly evolving waveform ( sew ) and a rapidly evolving waveform ( rew ), representing the quasi - periodic and non - periodic components of speech, respectively

    Wi編碼器將語音信號表示為漸變的特徵波形（ cw ? characteristicwaveform ） ，然後將其分解為慢漸變波形（ sew ? slowlyevolvingwaveform ）和快漸變波形（ rew ? rapidlyevolvingwaveform ） ，分別表示語音的準周期成分和類噪聲成分。
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