说明：  本程序实现对均匀直线阵列天线阵方向图的绘制，天线间隔为1/4波长，天线数量自拟，输入参数分别为入射角度及天线个数。
(This procedure implements a uniform linear array antenna array pattern drawing, the antenna interval is 1/4 wavelength, the number of antennas self, the input parameters for the incidence angle and the number of antennas.)