噪波 的英文怎麼說
中文拼音 [zàobō]
噪波
英文
noise alpha alpha-
In this paper, the concept of acceleration ambiguity function ( aaf ) and acceleration resolution is put forward for the first time. using aaf, the effects of target ' s relative acceleration on several outputs of a linear - phase matched filter are analyzed, such as the output signal - noise - ratio loss, the doppler resolution, the constraint on optimal accumulative time ( opt ) and their tolerable limits
論文首次提出並研究了加速度模糊函數和加速度分辨力的有關概念,並以加速度模糊函數為分析工具,詳細討論了加速度對線性相位匹配濾波器的輸出信噪比的損失程度、對多卜勒頻率分辨能力的影響程度、對最優相參積累時間的約束關系以及線性相位匹配濾波器輸出受加速度影響的容限等問題。It is the first time that the theory of wavelet has been applied in the signal processing of the codog power plant experiment rig and wavelet transform denoising was used, it may keep the aiguille and saltation parts, wipe off the noise and pick up the useful signal, it is benefit to analysis the result in experiment
把小波分析理論應用於codog實驗臺信號處理中,用小波變換進行信號消噪,可以很好的保存有用信號中的尖峰和突變部分,將信號的噪聲部分去除,從中提取出於有用信息,更有利於實驗結果分析。In designing analogic circuit, we adopt programmable filter max262 to meet the system ' s command. after the step, we can make the signal ' s frequency width is wider and noise level is lower. to make the signal ' s amplitude to meet the analogic to digital device ' s command, we adopt the max551 to finish the gain control
在模擬電路部分,採用可編程濾波器max262 ,這樣就滿足了該數據採集裝置所採集的信號的頻率范圍較寬以及具有較低的噪聲水平的要求,為了使采樣到的信號的幅度滿足後面a d轉換器的要求,採用max551對采樣到的信號進行調理(增益控制) 。Multiresolution wavelet is widely used in antinoise application because of the correlation of different layer wavelet coefficients. this paper presents a method called " shifting different layer coefficients " to suppress noise and pick - up the edge
多尺度小波系數由於其相關性而在去噪中得到應用,本文提出利用多尺度小波系數的移位相關的性質來最大限度的抑制噪聲,提取邊緣。The optimum design of detector arrays for the attenuation of surface waves and of ambient noise is a complex subject.
為衰減面波和外界噪聲作檢波器組合的最佳設計是一件復雜的事情。This thesis studies the law of affecting de - noise result and the selection of the threshold and the wavelet function, the combination of wavelet and fft in the fault diagnosis of turbine - generator sets : by the de - noise anslysis of blocks and sin signals, concludes : to blocks signals, usually adopts soft threshold ; the law of affecting de - noise result is when use wavelet auto - de - noise, with the increasing of decomposed level, the de - noise result becomes worse while the level blow the 3, when the level above 3 and when uses wavelet packet, it is the other way round ; the best de - noise methods of the signal is that uses " dbl " wavelet function, three level, soft and " rigrsure " threshold
本文研究了分解層數對消噪結果影響的規律和閾值、小波函數的選取,結合小波分析與fft分析診斷汽輪發電機組的故障。通過對brocks和sin兩信號的分析,得出:對blocks信號進行分析一般採用軟閾值;分解層數對消噪結果影響的規律為用小波自動降噪在分解層數小於3時,隨著分解層數的增加,消噪結果變好,反之,則變差,用小波包降噪時隨著分解層數的增加,消噪效果變好;適宜選用dbl小波軟rigrsure閾值自動消噪。Design of microwave ultra - broad band low noise amplifier
微波超寬帶低噪聲放大器的設計Through the processing method basing on wavelets, implementing the removing noise about section gauss noise to colure full tv signal, we resolve the theory and practice problems in the processing of weak signal detection
摘要通過基於小波分析的處理方法,實現對彩色全電視信號一段被高斯白噪聲干擾的降噪,解決微弱信號檢測過程中遇到的理論和實踐問題。If one wants to retrive the encryping datable or she must know the phase keys and wavelength keys simultaniously, otherwise, the reconstructed data will be white noise like
要想得到存儲信息必須同時知道相位匙和波長匙,否則得到的數據將是一白噪聲系列。In digital relay, the percentage of noise will increase rapidly with the increase of sampling rate when derivation calculus is substituted by sampled difference term. to solve this problem, a new method using fragment function integrated with the least square algorithm is proposed in this paper. the influence of white noise is greatly reduced and the accuracy of the dead angle calculation is nicely improved after adopting the new method
在數字式保護中,如果用差分代替求導將導致噪聲的百分比誤差隨著采樣頻率的提高而劇增,本文對此進行了分析並提出了用分段樣條函數最小二乘法來計算電流波形的導數值,以便在提高采樣率的同時降低噪聲誤差的影響,並將其應用於基於32位浮點dsp的新型變壓器保護裝置。In order to satisfy the veracity and the robustness against time - variable noise of the aoct, a new square root kalman adaptive filter arithmetic with time - variable noise statistic is presented in this paper. in addition, the wavelet analysis is applied to inspect the singularity of the measured current, and an adaptive signal - noise decomposer for aoct is designed
為了滿足aoct自適應控制的準確性和時變噪聲魯棒性的要求,論文將kalman濾波理論引入到自適應濾波中,並應用矩陣理論提出了一種新的時變噪聲統計的平方根kalman自適應演算法。The former put stress on the research of time optimal control method, fuzzy discursion and moving track, and the latter on the study of ekf recursion algorithms, noise model and noise characteristic identification
前者的重點是最優時間控制方法、模糊控制器的推理以及運動相軌跡分析;後者側重於ekf的狀態估計方法、噪聲模型對濾波估計性能的影響以及噪聲模型的辯識方法。Partial wavelet coefficients ca n ' t be set zero when the threshold is undersize so parts of noises are retained and some useful signals will be taked off when the threshold is iusto major so parts of useful signals are lost. these cases result in dissatisfactory denoising
如果閾值選取過小,那麼有一部分的噪聲小波系數將不能被置零,從而在去噪后的信號中保留了部分噪聲信息,使去噪的效果變差。Ecg signal denoising based on wavelet transform
基於小波變換的腦電信號噪聲消除方法Eeg signal denoising based on wavelet transform
基於小波變換的腦電信號降噪方法的研究A 3d fiducial - referential un - esprit algorithm suitable for joint azimuth - elevation - carrier estimation in unknown noise environment
未知噪聲背景下的波達方向及載波頻率三維聯合估計方法The characteristic of power quality signal ' s deal by wavelet multi - resolution decomposition and time - domain analysis is studied then brings forward combine the tow methods and uses it to filter bed yawp, decomposition and feature extraction. 8 kinds of power quality are classified and characterization of sag is specially classified
然後研究了小波多解析度分解和時域分析電能質量信號處理的特點,提出了應用兩種方法相結合的方法,對電能質量信號進行去噪、分解,通過大量的計算機模擬工作,對擾動信號進行了特徵提取。For the rock texture, i duplicated parts of existing paintings and filtered them a few times with lighting effect tools and noise
關于巖石的材質,我復制了一些現有的圖像加上濾鏡,用了些時間做燈光效果和噪波。The tv noise shader produces the effect of common television noise, complete with randomly colored pixels and alternating black scan lines
Tv噪波材質產生一個通用的電視噪波,完全的隨機顏色象素的交錯的黑色掃描線。3d dynamic optimization is a kind of technique that automatically separates image signal and interfering signal through a time and space integrated analysis, effectively restrains the interfering signal through adjustment and carding, so as to eliminate the slight noise and interference of the picture and remarkably improve definition of dynamic and static pictures
3d動態優化,即通過一個時間和空間的綜合分析處理,自動分離圖像信號和干擾信號,通過調整和梳理對干擾信號進行有效的抑制,消除了畫面的細微噪波和干擾,顯著提升了動態與靜態畫面的清晰度。分享友人