相干噪聲源 的英文怎麼說

中文拼音 [xiānggānzàoshēngyuán]
相干噪聲源 英文
coherent noise source
  • 相 : 相Ⅰ名詞1 （相貌; 外貌） looks; appearance 2 （坐、立等的姿態） bearing; posture 3 [物理學] （相位...
  • 干 : 干Ⅰ名詞1 （事物的主體或 重要部分） trunk; main part 2 （幹部的簡稱） short for cadre Ⅱ動詞1 （做...
  • 噪 : 動詞1. （蟲或鳥叫） chirp 2. （大聲叫嚷） make noise; make an uproar; clamour
  • 源 : 名詞1. （水流起頭的地方） source （of a river）; fountainhead 2. （來源） source; cause 3. （姓氏） a surname
  • 相干 : 1 （多用於否定句或疑問句） have to do with; be concerned with 2 [物理學] coherent; 相干散射 coher...
  1. In quantum system, noise primary results from decoherence and imperfect quantum gates. the code that combat noise is named quantum channel coding

    在量子系統中，通道噪聲主要源於消相干效應和量子門的不精確性。
  2. The research results are controlled source which has linear or nonlinear variabe frequency scan function and the seismic instruments which match with it, and the method of small group intervals, small offset, much more channels, short array length, high - frequency receivers are applied during the link of data acquisition, and that the techniques of the refraction static correction, the noise suppressing, the high - resolution velocity analysis, the wavelet length compression, the wavelet zero - phase, and the prestack migration should be applied emphasizedly during the link of data processing and interpretation

    研究表明，對于城市活斷層的抗干擾高解析度淺層地震勘探，在數據採集環節應採用具有線性或非線性變頻掃描功能的可控震源和與其相匹配的地震儀器，以及小道間距、小偏移距、多接收道、短排列和高頻檢波器接收的工作方法；在數據處理與解釋環節，要重視折射靜校正技術、噪聲壓制技術、高精度速度分析技術、子波壓縮技術、子波零相位化技術和疊前偏移技術等的應用。
  3. Different with the traditional ifog, light beams within mz - ifog transmit along the forward direction, which avoid the kerr effect noise and the interferometric noises brought by the backward scattering and reflecting light. mz - ifog also gains a high using efficiency of light source and a strong output signal. the principle of mz - ifog is analyzed

    與傳統sagnac干涉式光纖陀螺不同，此光纖陀螺結構簡單，兩路光信號採用前向傳輸，避免了後向傳輸光對光源的影響，也避免了後向散射、反射光帶來的相干噪聲以及光學kerr效應噪聲，光功率利用率高，輸出光功率大。
  4. Fortunately, we can solve this problem by using ap ( alternating projection ) algorithm, by this way ; the computational load can reduce dramatically. doa estimation is mostly research base on linear array, because of the limitation of linear, it can estimate the azimuth only ; solid array can estimate the azimuth and elevation, in this paper, the solid array is used for doa estimation ; when the signal sources are uncorrelated, the music algorithm is chosen, using mdl / aic algorithm, we attain the signal number of sources

    本文採用立體六元陣進行測向，在非相干信號源條件下，採用music演算法進行doa估計，採用基於信息論原理mdl準則或者aic準則判斷信號源數目，通過對陣列流形的研究，指出基於圓陣的陣列流形具有的某種對稱性，利用該對稱性來降低運算量，並且通過對演算法的研究，提出用維數較小的信號子空間或噪聲子空間來計算空間譜，進一步減小music演算法運算量。
  5. It can provide higher speed and alleviate the spectral degradation which usually goes with the existing algorithms, as well as constrain speckle noise of radar images. in respect of image fusion algorithm, the fusion rules and operators are essential. a new set of fusion rules and corresponding operators are given in this thesis

    實驗證明，在融合源圖象特性差異較大的情況下，該演算法與已有的基於小波分析的遙感圖象融合演算法相比較性能更優，具有運算速度快、減少光譜退化的特點，並能在一定程度上抑制相干斑噪聲。
  6. An appropriate cost function is constructed which avoids the use of the logarithm likelihood function that is lack of robust to the noise correlation, moreover, our method have many advantages such as, low complexity, suitable for coherence signals, etc

    構造適當的代價函數，避免了對數似然函數的使用，該方法對色噪聲協方差矩陣特徵值分散具有穩健性，同時具有較低的計算復雜度和適用於相關甚至相干源等優點。
  7. Because mz interferometric optical fiber gyroscope has bigger nonreciprocal phase, the system thermal stability, polarization noise and the error caused by the fluctuation of light source is particular analysed, some effective methods is proposed such as : using the " quasi - white - light " interferometry and the fiber polish technology accurately to control the fiber length, using depolarization light to minish the polarization error, and using temperature control, optical power control and depolarizer to stabilize the output of the light source

    結合mz干涉式光纖陀螺的存在較大非互易相移的特點，著重從其溫度穩定性、偏振噪聲以及光源波動引起的誤差三個方面分析了抑制噪聲、提高檢測精度的方法，提出了：採用「準白光」干涉測量法結合光纖研磨技術精確控制光纖長度差的辦法；採用非偏振光源抑制偏振噪聲的方法；採用溫度控制、功率控制以及消偏器實現穩定化陀螺光源的方法。
  8. In this paper a kind of interferometric optical fiber gyroscopes based on mach - zehnder interferometric principle is proposed. the signals of this novel optical fiber gyroscope transmit along the positive direction, which avoid the interferometric noise, causing by the negative - directional scattering light and reflecting light, and the kerr effect noise. in this novel optical fiber gyroscope the light power ' s utilization efficiency is high, the output signal is strong

    本文提出一種基於mz干涉原理的干涉式光纖陀螺，該種光纖陀螺的光信號採用正向傳輸，避免了後向傳輸光對光源的影響，也避免後向散射、反射光帶來的相干噪聲以及光學kerr效應噪聲，光功率利用率高，輸出光信號大。
  9. In this paper, a linear interpolation method to detect the number of sources impinging on an array is proposed, of which aims to alleviate the effect of colored noise on its performance

    摘要為了減輕加性色噪聲對信源數目估計性能的影響，本文提出了一種基於相干矩陣特徵值分佈曲線線性插值的信號檢測方法。
  10. Identification of loader cab ' s noise sources based on partial coherence analysis method

    基於偏相干分析法的裝載機司機室噪聲源識別
  11. Wlththe fleetingprogress ofcomputerteccioanddlgltaltechology ， newly devefoped duntlzed medicine techniques go on expending ， while computed radlographyls atyplcalmethods itheprocedure ofcomputedradlographylmaging ， we should irstlygetacross the characters ofklnds ofnolses andthe relationship betweenthe image signals andnolses basedonthe specialties o 土 computedradlo graphy images and medical image processing ， we h 。 e study the filtering methods r competed radlography images noises our mmor wo indudes ： 1 on the base of analyzing computed radlography imaging system in detail ， the author th 讓出 that the mnyor … noises are gausslanwie noise and polsson noise then ， the dlfferemrelationshlp ofbe 加 eentwo kinds ofnolses and sipal were studied completely 21 by conslderingboththe charactenstlcs ofcomputed radlography images andthe statistical feres ofwavelettransformed images ， a multlscale image iltenng algonthln ， which based on wo state hidden markov model （ hmm ） and mlxtule gausslan statistical model ， has been used to decrease the gausslan white noise in compmed images we expenmems as well as the comparison ith other denolsing methods werepresentedatlast ，

    在cr成像過程中，不可避免地引入各種噪聲干擾，極大地影響了醫生診斷的準確性，為此，只有弄清干擾圖像信息的各種噪聲的來源、特徵及其與信號的相互關系，才能有效地將之消除。結合cr影像以及醫學圖像處理的特點，本文研究了cr影像噪聲濾除的方法。主要工作有： [ 1 ]在詳細地分析cr成像系統的基礎上，指出固有噪聲和泊松噪聲是影響成像質量的兩種主要噪聲，並深入地討論了這兩種噪聲與圖像信號之間的相互關系。
  12. The sound intensity measurement is carried out for the exterior radiation noise of an automobile and by means of spectrum and correlation analysis of noise signal, an investigation into the application of sound intensity measurement to vehicle noise control is presented. for the main noise sources of automobile - noise of the engines made a distinguish analysis technology and various noise control measures. it is beneficial reference to reduce noise of engine

    本文依據聲強測量的原理，以汽車噪聲源的分析為應用對象；通過對汽車的車外輻射噪聲進行了聲強測試並對噪聲信號進行頻譜分析和相干分析，研究了聲強測量系統在汽車噪聲控制中的應用問題；論述了汽車發動機噪聲的鑒別分析技術和各種控制措施，為發動機噪聲的降噪工作提供參考。
  13. So a new method is proposed that combines the traditional transfer function and coherence function analysis with the statistics of frequencies to obtain the dominant frequencies, which can reflect how the noise sources influence the bus interior noise level in frequency domain, and which will provide reliable references to make up plans in reducing the bus interior noise

    對此提出了在傳統的傳遞函數和相干函數分析的基礎上結合頻率統計，選出優勢頻率的方法來考察噪聲源對車內噪聲的影響，為制定客車車內噪聲治理方案提供了可靠的依據。
  14. 5 ) based on the noise model with a centro - hermitian covariance matrix, a differential denoising bearing estimator is developed for coherently distributed sources in unknown noise fields. its accuracy and resolution performance is analyzed theoretically and numerically

    5 ）針對未知噪聲環境中相干分佈源的方向估計問題，提出了一種差分去噪估計器，並從理論和數值結果兩個方面評價了它的精度和解析度性能。
  15. The coherence analysis of the sound field using prssure and particle velocity combined processing was discussed. a new kind of combined sensor was used to gather the information of the sound field. the main idea of this paper is to seperate ambient noise field ， and the characteristics of it can be further studied. the coherence of a point source sound field was also analyzed to verify the validity of the approach

    聲場聲壓與振速的相干性是聲壓、振速信息聯合處理的重要物理基礎之一，本文對其進行了初步的分析.在新型組合傳感器湖試的基礎上，把環境噪聲場分解為不相干的各向同性分量和相干的各向異性分量，初步分析環境噪聲場的構成；同時對點源聲場的相干性也進行了驗證性的分析
  16. In this paper the main noise source of sq6450 type light car was judged by means of spectrum and correlation analysis of noise signal. the corresponding proposal reducing noise was presented

    對sq6450輕型汽車進行了噪聲測試，通過對噪聲信號的頻譜分析和相干分析，找出了主噪聲源，並提出了降噪措施。
  17. Abstract : in this paper the main noise source of sq6450 type light car was judged by means of spectrum and correlation analysis of noise signal. the corresponding proposal reducing noise was presented

    文摘:對sq6450輕型汽車進行了噪聲測試，通過對噪聲信號的頻譜分析和相干分析，找出了主噪聲源，並提出了降噪措施。
  18. Accordingly, the interception and radio monitoring for spread spectrum communication have been of great research interests. and the chief task is to detect and separate the ds / cdma signals hidden in the noise and interference

    相應地，擴頻通信的電子對抗和民用無線電資源監管成為非常重要的研究課題，其中對噪聲和干擾中直擴碼分多址（ ds / cdma ）信號的盲檢測和分離是首要任務。
  19. Calculation of identifying noise source based on partial coherence analysis

    偏相干分析識別噪聲源的計算
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