譜子空間 的英文怎麼說

中文拼音 [pǔzikōngjiān]
譜子空間 英文
spectral subspace
  • 譜 : Ⅰ名詞[書面語]1 （按類別或系統編成的書或冊子等） table; chart; register 2 （指導練習的格式或圖形）...
  • 子 : 子Ⅰ名詞1 （兒子） son 2 （人的通稱） person 3 （古代特指有學問的男人） ancient title of respect f...
  • 空 : 空Ⅰ形容詞（不包含什麼; 裏面沒有東西或沒有內容; 不切實際的） empty; hollow; void Ⅱ名詞1 （天空） s...
  • 間 : 間Ⅰ名詞1 （中間） between; among 2 （一定的空間或時間里） with a definite time or space 3 （一間...
  • 空間 : space; enclosure; room; blank; interspace
  1. ( 2 ) the emission spectra of laser ablation metal copper plasma were measured. the detailed mechanism of plume emission of cu plasma was qualitatively explained using a simple model based on excitation of atom and ion in plume arising from inelastic collision between the elemental species and electron with high kinetic energy. under the local thermal equilibrium model, the electronic temperature of copper plasma was deduced to be in the 104 scale by its emission lines

    （ 2 ） cu等離子體光譜：在420 570nm波長范圍內觀測了激光燒蝕cu等離子體的光譜和各發射譜線在等離子體中的空間分佈；比較了激光能量對cu等離子體發射光譜、電子溫度的影響；用局部熱力學平衡（ lte ）近似，測得cu等離子體的電子溫度為104k數量級；在不同背景氣壓下，觀測了激光燒蝕cu等離子體光譜的空間分佈。
  2. The cheapest way to get one is to invoke the spectral theorem and to conclude that normal operators always have non-trivial invariant subspaces.

    取得這樣結果的最省力的嘗試是引用光譜定理而得到正規運算元恆有非平凡不變子空間的結論。
  3. Symmetry in spectrum space of isotonic oscillator and two - photon parametric model

    同調諧振子譜空間上的對稱性和參量雙粒子模型
  4. By translations and changes of scale the spectral subspaces associated with all discs can be characterized similarly.

    通過平移與尺度改變，伴隨著一切圓域的譜子空間都可以類似地給予刻劃。
  5. An important property of sobrification is given. by discussing the spectra of complete lattices, a theoretical foundation of sobrification of spaces is obtained. thus we know that the category of sober spaces is a reflective subcategory of the category of all the topological spaces with continuous functions

    通過對完備格的譜理論的簡單討，為一般的拓撲空間及偏序集的sober匕做了理論上的鋪墊z指出了拓撲空間的sober化函子是從sob到top的包含函子的左拌隨，理想完備化函子是從alg到pos的遺忘函子的左拌隨
  6. For the mesoscopic metal ring system in external magnetic field, supposing the system has a symmetry under translation in charge space, the quantum current and the quantum energy spectrum in mesoscopic metal ring are given by solving thire eigenvalue equations ; and the quantum fluctuations of the current and the energy have been calculated by the character of the minimum shift operator

    摘要針對處于外磁場中的介觀金屬環系統，假設在電荷空間中具有變換的對稱性，通過求解本徵值方程給出系統的量子電流、能譜關系；利用最小平移算符的性質等，計算介觀金屬環中電流和能量的量子漲落。
  7. Test method for residual acrylonitrile monomer in styrene - acrylonitrile copolymers and nitrile rubber by headspace gas chromatography

    利用液面上空間氣相色譜法檢測苯乙烯-丙烯腈大量分子聚合物中殘留丙烯腈單體的方法
  8. In this thesis, we studied the emission spectra of laser ablation al and cu plasma. ( 1 ) the emission spectra and space - resolved - spectra of aluminum plasma were observed by pulsed q - switched yag laser

    （ 1 ） a1等離子體光譜：在380 500nm范圍內觀測到激光燒蝕a1產生的等離子體發射光譜及空間分佈特徵。
  9. We study the spectral theory of bounded linear operators and the characterization of ci operators by way of mbekhta ' s subspaces. we find a series of operators which are ci operators by the defination and the characterization of ci operators given by weibang gong in [ 3 ]

    利用mbekhta子空間研究一般有界線性運算元的譜理論以及描述ci運算元的特徵；用ci運算元的定義和判定方法尋找更廣泛的ci運算元；同時還討論了廣義逆運算元和ci運算元及mbekhta子空間的關系。
  10. Finally, to deal with the situation that the dimension of the signal subspace decreases, a new algorithm is proposed based on the idea of the cross spectral method

    最後，根據降秩技術中的交叉譜思想，提出了一種新的對信號子空間維數減少時的處理演算法。
  11. There are mainly two type of algorithms used for spatial spectrum estimation : one is those based on bayesian maximum likelihood method, like the ml ( maximum likelihood ) algorithm, maximum entropy method and etc., the others are based on the spatial decomposition or projection of correlation matrix, this kind of algorithm include vector characterization method, music ( multiple signal classification ) algorithm, projection matrix method, etc. music is a classical spatial spectrum estimation algorithm that has a super high resolution and is widely used today, however, it cannot estimate doa of signals that are correlated

    空間譜估計的演算法大致分兩大類:一是基於極大似然估計和最大后驗概率估計統計理論的演算法，包括:極大似然估計法（ ml ） 、最大熵法等;另一類是基於對協方差矩陣進行子空間分解或投影的演算法，包括:矢量特徵法、多重信號分類法（ music ） 、投影矩陣法等。其中， music法是一種經典的空間譜估計主流演算法，具有超強的分辨性能，但它無法實現對相干信號進行測向分辨。
  12. First, the thesis introduces the definitions and the attributes of the higher - order statistics. it is insensitive to additive gaussian noise ( white or colored ), which is what we base on to doa problems. then two doa estimation algorithms based on higher - order statistics are presented, one is that forming cumulant matrix pencil used in esprit to estimate doa problems, the other is spectrum estimation method for doa estimation based on the eigenstructure analysis of the fourth - order cumulant, and comparing the effects of the estimation to conventional covariance - based doa algorithms "

    論文首先對高階統計量的定義和性質作了介紹，特別指出了高階統計量對加性高斯噪聲（白色或有色）不敏感，這是我們利用它進行波達方向估計的理論依據，然後文中提出了兩種基於高階統計量的波達方向估計方法，一種是利用子空間旋轉不變技術構造四階累積量矩陣進行估計的方法，另一種是基於四階累積量陣特徵分解的空間譜估計測向方法，並將它們的估計效果與傳統協方差方法的效果進行比較。
  13. 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。
  14. For the next, it studies the theory of auto - cross spectrum density method and stochastic subspace identification method

    其次，研究了自互譜法和隨機子空間法的理論。
  15. Two important subspaces introduced by m. mbekhta in 1987 [ 4 ]. ( they are usually called mbekhta subspaces. ) in the following years, mbekhta subspaces have been widely used in spectral theory of bounded operators and compact operators, the single - valued extension property ( svep ) of bounded operators, and so on

    Mbekhta再[ 4 ]中定義了兩個著名的子空間： （我們通常稱它們為mbekhta子空間）隨后幾年，人們將mbekhta子空間廣泛地應用於有界線性運算元、緊運算元的譜理論，有界線性運算元的單值擴張性質（ svep ） ，等等。
  16. To solve this problem, this thesis will focus on investigation of the following detection methods based on the features of the dsss signal and with the binary - phase - shift - keying dsss ( dsss / bpsk ) signal as an example. 1. the power spectrum of the dsss / bpsk signal is discussed and the detection performance in each power spectrum estimation method is compared in terms of nonparametric methods, parametric methods and subspace methods in power spectrum estimation

    本文針對這一問題，從dsss信號特徵出發，以二進制相移鍵控的直接序列擴頻（ dsss / bpsk ）信號為例，研究了以下檢測方法: 1 .從功率譜估計的非參數方法、參數方法和子空間方法入手，討論了通過不同類型方法估計的dsss / bpsk信號功率譜，並比較了各功率譜估計方法應用於dsss / bpsk信號檢測的性能。
  17. Numerical result shows that the new method is more efficient in convergence than the standard lanczos algorithm ; the second algorithm generalizes the implicitly restarted arnoldi ( ira ) augmented by soreesen to the implicitly restarted lanczos algorithm, which improves the convergence rate of lanczos algorithm by making good use of the spectral information obtained from the previous process. the last algorithm utilizes deflation strategies to the second algorithm to forming invariant subspace for a, so that the stability can be kept in computing process

    數值試驗表明，該演算法比標準lanczos方法具有更好的收斂性；第二種演算法是將求解特徵值問題的隱式循環arnoldi方法（ ira ）應用於求解對稱不定線性方程組的lanczos演算法，充分利用lanczos演算法過程中的譜信息，確定預處理；第三種演算法是在第二種演算法的基礎上，運用收縮技巧，形成近似不變子空間，以提高收斂速度和數值穩定性。
  18. Due to the limitation of this algorithm, this dissertation proposes two improved methods : one - dimension noise subspace - based spatial spectrum estimation algorithm and improved music algorithm

    針對演算法的此局限性，本文提出了兩種改進方法:基於一維噪聲子空間方法的空間譜估計演算法和改進music演算法。
  19. There is a focus on application of the stochastic subspace identification method in this article. for its defect in application of engineering, it also studies auto - cross spectrum density method which is classical in engineering, and it can be used as a supplement

    針對隨機子空間法在工程應用中耗時長的不足，本文還研究了工程應用中比較經典的自互譜法，該方法可以作為隨機子空間法的補充。
  20. Through the process, a deal of information of rotor vibration is picked up, accordingly the vibration of rotor can be characterized in ml therefore, the vector spectrum can radically change the discontented state and make the monitoring and diagnosis accirate much more

    矢譜技術以多傳感器信息融合為基礎，致力於轉子空間振動的全方位描述。因此，矢譜技術從根本上改變了單通道信號分析割裂信號內在聯系的弊端，使監測和診斷更加完善準確。
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