中文说明：
声呐或者雷达系统发射信号后，通过波束形成算法对两个目标（方位分别为theta1、theta2）回波进行仿真，经过相位补偿，可以看出图像有两个波峰，波峰处指向性函数峰值最大，峰值所对应的的角度值即为目标的方位角。所以该程序对数字波束形成（DBF）的原理进行了仿真，适合初学者掌握阵列信号处理中数字波束形成的原理。
English Description：
After sonar or radar system transmits signal, the echo of two targets (theta1 and theta2) is simulated by beamforming algorithm. After phase compensation, it can be seen that the image has two peaks. The peak of directivity function at the peak is the largest, and the angle value corresponding to the peak is the azimuth of the target. So this program simulates the principle of DBF, which is suitable for beginners to master the principle of DBF in array signal processing.