The simulation calculation of radar systematic error shows that the results are satisfactory and better than those of principal component estimate.

干涉仪雷达系统性误差的模拟计算表明：效果良好，优于主成分估计。

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Finally, we obtained three robust biased model fitting methods which were called as robust principal component estimate, robust ridge estimate and robust root-root estimate respectively.

三种方法分别是稳健主成分估计、稳健岭估计和稳健根方估计。

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This paper considers the classification compression principal component estimate of regression coefficient in growth curve model and proves that it is superior to least squares estimate.

研究岭型主成分估计在降维估计类中的方差最优性，证明了它的方差阵在降维估计类中最小，方差阵的特征值最小，方差和及方差积最小。

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