中文说明：
改程序能够实现加窗插值FFT算法的matlab仿真，已经得到实验验证，注解清晰详细，代码可读性强.以512点为例进行仿真计算，对与其他点数，如256或是1024可以通过简单修改即可
English Description：
The improved program can realize the MATLAB simulation of windowed interpolation FFT algorithm, which has been verified by experiments. The annotation is clear and detailed, and the code is readable. Taking 512 points as an example, the simulation calculation can be carried out, and other points, such as 256 or 1024, can be simply modified