分数阶傅里叶变换快速算法，利用卷积原理，计算量接近fft-Fractional Fourier transform fast algorithm

基于kaiser窗的双谱线插值FFT谐波分析，随机调制信号下的模拟ppm，分数阶傅里叶变换计算方面。- Dual-line interpolation FFT harmonic analysis kaiser windows, Random ppm modulated analog signal under Fractional Fourier transform computing.

做视觉测量的上位机代码,分数阶傅里叶变换计算方面,基于kaiser窗的双谱线插值FFT谐波分析。- Do Vision Measurement PC code, Fractional Fourier transform computing, Dual-line interpolation FFT harmonic analysis kaiser windows.