基于魂芯二号A的大点数FFT实现

Implementation of Very large Points FFT Base on HXDSP1042

随着雷达系统分辨率的不断提高,机载SAR领域要求的FFT点数也在不断增加,而国产化应用平台也需要同步实现。本文介绍了一种超大点数FFT的实现方法,并在国产化魂芯二号A高性能DSP上进行实现,实验结果表明魂芯二号A实现1024K点FFT时间仅为5.913ms,优于进口同类器件。

With the continuous improvement of radar system resolution,the number of FFT points required in the field of airborne SAR is also increasing,and the domestic application platform also needs to be implemented synchronously.This paper introduces a method of realizing super large number of points FFT,and implements it on the high performance DSP of HXDSP1042.The experimental results show that the time of realizing 1024K point FFT of HXDSP1042 is only 5.913 ms,which is better than that of imported similar devices.