说明：  该程序模拟了雷达照射区域存在多个点目标，利用线性自回归的方法进行目标估计，包括burg,Yule-Walker法AR 谱估计和修正的协方差谱估计。
(The program simulates the radar of the irradiated region there are multiple points of the target, using linear target is estimated from the regression method, including burg, Yule-Walker method AR spectral estimation and the modified covariance spectral estimation.)