二阶prony方法谱估计方法仿真，四阶prony方法谱估计，白噪声，彩色噪声，四阶统计量，并用GUI设计了一个界面，毕业设计-Prony second-order spectrum estimation method, fourth order prony spectral estimation method, white noise, colored noise, fourth-order statistics, and GUI design with an interface that is