Power spectrum density test_ Given a set of data x(n,the standardized cumulative periodogram is defined by k<1 标准累积周期 立e) 图的定义 i(k) 1≤k≤K (8.1.4) k>K 利用标准累积周期图判定残差信号是否为白噪声信号，K=N2 Given a set of data the standardized cumulative periodogram is defined by 1 { ( )} 0 N x n n − =  Power spectrum density test 标准累积周期 图的定义 利用标准累积周期图判定残差信号是否为白噪声信号, K=N/2