一种基于Altera MegaCore实现FFT变换的方法

摘要

提出了一种基于Altera公司的FFT IP Core实现FFT变换的方法，对FFT处理引擎的接口功能和工作时序要求进行了说明，介绍了FFT周边功能模块。在某型水声探测装置上实现了该FFT IP Core的工程运用，并将运算结果与MatLab仿真数据进行比较分析，结果表明该方法可靠、方便、灵活，可以缩短工程开发周期，节约成本。%This paper presents a FFT transform method based on FFT IP Core of Altera.Firstly interface function and tim-ing requirements of the FFT processing engine are il ustrated.Then the peripheral function modules of the FFT IP Core are introduced.The FFT IP Core is implemented in an underwater acoustic detection device.Final y the results between output of FFT IP Core and simulation data of Matlab are comparative analyzed.This method that can shorten the project development cycle and cost saving is reliable,convenient and flexible.