crosscorrelation 中文意思是什麼

crosscorrelation 解釋
互相關，交叉相關
  1. The core of the proposed new cdma system is the use of orthogonal complete complementary codes, whose autocorrelation function is zero for all even and odd shifts except the zero shift and, whose crosscorrelation function is zero for all possible shifts

    在本系統中，利用完全互補碼處處為零的互相關特性和自相關的旁瓣為零的特性，可有效消除系統的多址干擾，提高系統的容量。
  2. Conventional detector ( single - user matched filter ) distinguishes each user by the crosscorrelation of their spread - spectrum codes. in practice, however, its performance is much deteriorated due to the existence of noise in channel and strong multi - access interference, i. e. near for effect. a new method using independent component analysis is proposed in this paper. the - received energy of signals is controlled effectively, thus the near - far effect is overcome as much as possible ; moreover, the effect that noise imposed on the detector is mostly reduced. simulations verify the effectiveness of this method

    傳統檢測器（單用戶匹配濾波）利用擴頻碼之間的互相關特性來區分各用戶信號.而在實際應用中，通道噪聲和近距離用戶對遠距離用戶的強多址干擾即遠近效應，使得接收機的性能受到很大影響.本文將獨立分量分析法引入傳統接收機，有效控制接收信號的能量，從而極大地提高了接收機的抗遠近性能，同時噪聲的影響被盡可能消除.模擬結果表明了該方法的有效性和可行性
  3. Abstract : in this paper ? for real marine underwater noise data by using synchronous acquisition of points ? inputs - output covariance matrix is obtained by filtering ? compensating delay and crosscorrelation. then the contribution of inputs to output in network sense and partial coherence as well as other useful quantities are calculated from the inputs - output covariance matrix

    文摘:本文對多點同步測量方法記錄的艦艇噪聲數據，採取在時域上作濾波、時延補償和互相關得到輸入輸出協方差矩陣，然後從輸入輸出協方差矩陣計算在網路意義和偏相干意義下輸入對輸出的貢獻以及其它有用的量。
  4. Average crosscorrelation coefficient

    平均互相關系數
  5. The objective function is defined as the summation of normalized zero - delay crosscorrelation of all common - image gathers

    目標函數定義為各共成像點道集零延遲歸一化互相關值之和。
  6. In order to expand the search space and decrease the crosscorrelation among the sub - sources, non - linear transform is made for the cost function

    為了擴大搜索空間，降低各信源之間的互相關性，將代價函數進行了非線性變換。
  7. The market possesses prior information about the mean and variance of the value of the risky asset, as well as the crosscorrelation between the public and private information

    在模型中，假設市場揭露了標的風險資產真實價值事前的平均數與變異數，以及公開與私有訊息之間的共變數等訊息。
  8. Compared to the traditional dynamic balancing instruments, this instruments has the more friendly soft panel, and can be used more conveniently ; has two mode to get digital signal, one is by acquisition clip and the other by series communication ; use crosscorrelation analysis to improve the accuracy of the measure results ; use software method to eliminate the bad influence caused by missing signals ; have multiple methods of dynamic balance ; have some functions of fault - diagnosis ; and combined lab view program with database using dll. it has been proved that the balancing instrument can be used more conveniently, has complete functions and can obtain satisfying result

    與傳統動平衡儀相比，木儀器面板更加友好，使用更加方便；可通過採集卡，串口通信兩種方式進行數據採集；利用相關原理對採集到的數字信號進行分析處理，提高了測試結果精確度和穩定性，並用軟體方法解決了因漏採信號，引起的對信號處理的不良影響；包含多種平衡方法；具有一定的故障診斷能力，可擴展性好；並利用dll技術實現了labview應用程序與c + + builder數據庫功能的相結合。
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