... variance of measured error 测量方差 variance of estimaion error 估计误差的方差 Variance of the Prediction Error 预测误差的方差 ...
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...差阵 variance matrix of estimated error 估计误差的方差 variance of estimaion error ; variance of timing estimation error 实际估计误差协方差 actual estimation error covariance ..
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对应于方差参数这两种估计的回归系数的两种两步估计，它们的均方误差大致相当。
However, two-stage estimates of regression coefficients corresponding to these two estimates have approximate equal mean square error.
由于在估计方法中无需假定误差方差，因此，所构造的估计方法更符合实际应用情况。
Since there is no need to suppose the variance of error, the estimation method which we established is more efficient in application.
为了计算最优加权，提出了局部估计误差互协方差的计算公式。
In order to compute the optimal weights, the formula of computing the cross-covariance among local filtering errors is presented.
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