在此基础上采用随机振动的离散分析理论，推导出结构响应均值和方差的递推式。
Based on discrete random vibration theory, recursive square equations to calculate the mean and standard deviation of response are developed.
并采用了离散余弦转换(DCT)对其方差的波谱结构进行了讨论。
We have also studied the variance spectral configuration of the surface wind field using DCT (Discrete Cosine Transform).
在线性无偏最小方差估计准则下，推导出了该离散化后所得系统的全局最优递推状态估计算法。
In the sense of linear unbiased minimum variance estimation, a global optimal recursive state estimation algorithm for this discretized linear system is proposed.
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