说明：  用均匀圆阵对信号进行方向估计，并仿真功率谱图。同时与均匀等距线阵进行比较，圆阵估计效果更好。
(With uniform circular array direction of the signal estimates, and simulation of power spectra. At the same time with the uniform linear array were compared equidistant, round patches is estimated better.)