本文计算了亚洲500毫巴月平均环流指数的方差谱。

In this paper, the power spectrum of the monthly 500 MB circulation index over Asia has been calculated.

youdao

其中，对于观测向量协方差阵的谱分解估计，我们很容易得到它在一些损失下的风险函数。

Thereinto, for the spectral decomposition estimate of the covariance matrix , we can gain the risk functions under some losses.

youdao

与传统的方法相比，无需对随机信号的协方差函数的功率谱进行分解，不受限于协方差函数的功率谱是否为有理式。

Compared with the traditional method, it does not need disassembling the power spectral densities of stochastic signal covariance and is not bound to if the power spectral densities are rational.

youdao