用Burg算法求AR模型的参数。比自相关法有着较好的分辨率，但对于白噪声加正弦信号，有时可能会出现谱线分裂现象。-Algorithm for AR model parameters using the Burg. Than the autocorrelation has a better resolution, but the white noise added to sinusoidal signals, may sometimes appear as split.