包含特征值与特征向量的提取、训练样本以及最后的识别，计算十字叉丝的在不同距离的衍射图像,这是一个好用的频偏估计算法的matlab仿真程序。- Contains the eigenvalue and eigenvector extraction, the training sample, and the final recognition, Calculation crosshairs diffraction image at different distances, This is a useful frequency estimation algorithm matlab simulation program.