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该文讨论了采用一般最小二乘法和全局最小二乘法进行谱估计,并使用奇异值分解(SVD)方法来确定模型的AR阶数和参数,用Cadzow谱估计子估计功率谱,给出估计出的参数和频率的统计值.实验证明该方法能够有效的估计功率谱.“,”This paper elemates the spectrum using the nomal Least-squares and total Least-squares. the SVD was used to calculate the models AR order and parameters. Cadzow operator was used to estimate the power spectrum. This paper gived The statistics of the elemated paramenters and frequency.Experiments show this method can estimate the power spectrum accuratly.