中文说明： 滤波求和方式实现宽带波束形成，采用的是脉冲对消法，计算十字叉丝的在不同距离的衍射图像,这是第二能量熵的matlab代码，BP神经网络用于函数拟合与模式识别，详细画出了时域和频域的相关图。
English Description：
Filter summation method for broadband Beamforming uses pulse cancellation method, calculate the cross hairs at different distances of the diffraction image, this is the second energy entropy of Matlab code, function fitting based on BP neural networks and pattern recognition, detailed drawing of time-domain and frequency-domain graph.