MATLAB实现快速正交变换，与传统的FFT算法相比拥有更高的分辨率，但是运算时间较大， 在目标检测、频率分析、降噪方面都有着广泛的应用-MATLAB to achieved FOS_convert, compared with the traditional FFT algorithm has a higher resolution, but the computation time is large, the target detection, frequency analysis, noise reduction have a wide range of applications