本文提出的FFT实现算法是基于FPGA之上的，算法完成对一个序列的FFT计算，完全由脉冲触发，外部只输入一脉冲头和输入数据，便可以得到该脉冲头作为起始标志的N点FFT输出结果-In this paper, the FFT algorithm is based on the FPGA-based algorithm to complete a sequence of FFT calculation, triggered solely by the pulse, the external input is only a head and the input data pulse, the pulse could be the first sign of N as the starting point FFT output