在对随机信号的分析中，功率谱估计是一类重要的参数研究，功率谱估计的方法分为经典谱法和参数模型方法。参数模型方法是利用型号的先验知识，确定信号的模型，然后估计出模型的参数，以实现对信号的功率谱估计。根据wold 定理,AR模型是比较常用的模型，根据Burg算法等多种方法可以确定其参数。-In the analysis of random signals, power spectrum estimation is a kind of important parameter research. The method of power spectrum estimation is divided into classical spectrum method and parameter model method. The parametric model method uses the prior knowledge of the model to determine the model of the signal and then estimates the parameters of the model to achieve the power spectrum estimation of the signal. According to the Wold theorem, the AR model is a more commonly used model, and its parameters can be determined by various methods such as the Burg algorithm.