cumulant 中文意思是什麼

cumulant 解釋
累積量
  1. 3 fourth order cumulant ( foc ) different slice - based adaptive dynamic line enhancement algorithms are presented

    3提出了基於四階累積量不同切片的間接自適應動態線譜增強演算法。
  2. Cumulant - based blind adaptive beamforming technology

    基於累積量的盲自適應波束形成技術
  3. A method of dsss signal detection based on stft and 3rd order cumulant

    和三階累積量的直擴信號檢測法
  4. Cumulant generating function

    累積量母函數
  5. Improvement of cumulant - based inverse filter criteria for mimo system

    基於累積量的多輸入多輸出系統逆濾波準則演算法的改進
  6. A doa estimation algorithm for coherent signal based on the fourth - order cumulant

    時空欠采樣寬頻段信號頻率和二維角估計方法
  7. Research on wavelet extraction via linear equation approach based on higher - order cumulant

    基於高階累積量的線性化子波提取方法研究
  8. Multi - user direction - of - arrival estimation in cyclic cumulant domain via spatial signature

    基於空間特徵的多用戶循環累量域波達方向估計演算法
  9. The algorithm takes advantages of all nonredundant information of the fourth - order cumulant matrices and so reduces the computational cost

    該方法利用了四階累積量陣的所有非冗餘信息，在很大程度上降低了運算量。
  10. This new method only uses three cumulant matrices, and doesn ' t require searching spectral peak or pairing parameters, and is easily implemented

    該演算法僅需使用3個高階累積量矩陣，而且無須譜峰搜索和參數配對，計算簡單。
  11. Tricepstrum equalization algorithm ( btea ) and super - exponential ( se ) algorithm based on block data estimation is studied, and these algorithms use hos explicitly. their performance, such as estimation variance and bias, is analyzed. a kind of sparse cross cumulant and sparse equalizer is proposed to simplify the se algorithm, and the simulating results show efficient reduction in complication

    ?研究了幾種直接使用高階統計量的演算法，包括基於數據段估計的倒三譜演算法和超指數演算法，分析了演算法的估計方差和偏差等性能；由於超指數演算法計算量較大，不利於實時均衡，利用水聲通道的稀疏性，提出了一種基於稀疏互四階累積量和稀疏權的演算法，有效降低了超指數演算法的計算量。
  12. Methods of estimating baud rate, signal to noise ratio ( snr ) and reference phase are investigated. a modified euclidean algorithm is proposed to estimate baud rate of the burst packets. a cumulant based algorithm of estimating snr of star - qam is proposed which has better estimation performance in medium scope of snr

    研究了自適應調制中波特率，信噪比和載波相位等參數的估計演算法；提出一種基於修改的歐幾里得演算法的波特率估計演算法，這種演算法可以對突發分組的波特率做出準確估計；提出一種星型qam信號的信噪比估計演算法，在中等信噪比條件下，具有較好估計性能。
  13. It is shown that the horizontal and vertical factorial moments are equivalent only when they are used in combination with the cumulant variables

    發現：在一般情況下，只有在引入累積變量后，縱向階乘矩才與橫向階乘矩相等。
  14. We try to do the target recognition based on non - symmetric polarity effect using wavelet packet and an operator obtained when doing higher order cumulant analysis

    另外，本文在非正弦波雷達「非對稱極性效應」理論基礎上研究了目標材質識別方法的實現。
  15. Therefore, in the study nonlinear phenomena in high energy collisions the hfm can be used only in combination with the cumulant variables

    因此，在高能碰撞非線性現象（間歇和分形）的研究中，只有採用了累積變量時，才能使用橫向階乘矩進行計算。
  16. After a careful comparison we found : ( 1 ) rotating the coordinate system around the z - axis for each event is necessary for the relaxation of the correlation between thrust ( or sphericity ) major - minor frame and the direction of the first hard gluon emission. ( 2 ) the horizontal factorial moments ( hfm ) are equivalent to the vertical ones ( vfm ) only after cumulant - variable transformation. therefore, in the study of nonlinear phenomena in high energy collisions the hfm can be used only in combination with the cumulant variables

    工jlnfy4ww ； 6標系與發射第一個硬膠子之間的關聯效應，從而觀察到全部強度的動力學起伏；證明了：只有在引入累積變量以後，橫向矩才等於縱向矩，從而也才等效于幾率矩，困而只有在這時，橫向矩才能被使用；論證了：對eb對撞末態粒子系統動力學起伏的研究只能在全相空間進行，而不能用限定的相空間，因而只能採用丟掉最初的一個或幾個點的方法消除動量守恆對相空間標度特性的影響。
  17. The theoretical analysis and simulation show that the ssnr and the sksnr are equal to or greater than the original signal - to - noise ratio ( snr ), and that employing third order cumulant slices can effectively extract the mot - radiated quadratic phase dynamic coupling signals from asymmetrical distribution noise

    理論分析與模擬表明：切片信噪比、歪度信噪比總是大於相關信噪比；用該演算法十分有效地實現了二次相位耦合信號與非對稱分佈色噪聲的分離。
  18. 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。
  19. In the aspect of blind - identification, the mutual power spectrumx time - frequency distribution product of two delay signals are used as the features of classification. the cluster analysis and cumulant invariants of mpsk signals are used to automatically classify communication signals

    在信號識別中，選取信號的互功率譜、時頻分佈、 mpsk信號的延遲相乘信號作為分類特徵，利用模式識別中的聚類分析以及mpsk信號的基於高階累積量構成的分類特徵不變量實現了信號調制類型的自動分類。
  20. Second, since there are lots of redundant items in the fourth - order cumulant matrices, we introduce an algorithm of direction - of - arrival estimation based on the maximal set of nonredundant cumulant ( msnc )

    其次，由於利用四階累積量進行波達方向估計時計算量很大，文中提出了一種基於最大非冗餘累量集合的方向估計方法。
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