对信号进行谱估计方法的研究。故要求同学生成不同频率段的信号，将其叠加，并叠加噪声，研究不同谱估计算法对其进行检测上的优缺点-Study the signal spectral estimation methods. It requires students to generate signals of different frequency band, which was superimposed, and superimposed noise, different studies spectral estimation algorithm to detect them on the advantages and disadvantages