线性预测算法 输入：阶数p，快拍数据协方差矩阵R，观察范围内各方向导向矢量，三维矩阵phiyz。 输出：线性预测谱估计矩阵P。-Linear prediction algorithm Input: the order of p, snapshot data covariance matrix R, observe the direction in the range of steering vector, three-dimensional matrix phiyz. Outpu