摘要
全相位频谱分析(apFFT)是传统FFT的一种改进算法,能改善FFT的栅栏效应和截断效应,具有频谱泄露少、相位不变的特性。介绍采用FPGA器件实现apFFT算法,精度高于模拟式测量,并且适用性强、成本低,所得到的QuratusII仿真结果与Matlab软件仿真结果一致。
All Phase spectrum analysis（apFFT） is an improved algorithm of the traditional fast Fourier transform, it can improve the fence effect and truncation effect, and has excellent performance in suppressing spectral leakage and the property of phase invariant. This paper introduces the use of FPGA devices to implement apFFT algorithm which is composed of three parts： adress generate modular, data memory modular and FFr modular. The precision is higher than analogue measurement, the simulation result of QuratusII is similar to the simulation result of Matlab.
出处
《微型机与应用》
2010年第18期21-24,共4页
Microcomputer & Its Applications
基金
河北省自然科学基金资助(F2008000415)
