摘要
算术傅里叶变换因其乘法运算量很少和不存在对样本点大小的限制,在谐波分析检测中具有一定的应用前景。而影响AFT运算速度的主要因素是采样信号零次插值点位置的计算,文章研究了零次插值点位置的离线计算问题,可以减少AFT的在线计算量,提高了AFT零次插值算法在谐波分析中的实时计算速度。
Arithmetic fourier transform（ AFT）,for its little multiplication calculation and no restriction of the sample points,has a better application prospect in the harmonic detection analysis. And the main factor influencing the AFT operation speed is the zero interpolation points＇ calculation. This paper mainly studies the off-line calculation problem of zero interpolation location,which can reduce the online calculation of AFT,and improve the real-time calculation speed of the zero interpolation algorithms in the harmonic analysis.
出处
《电测与仪表》
北大核心
2015年第13期35-37,共3页
Electrical Measurement & Instrumentation
关键词
算术傅里叶变换
快速傅里叶变换
离线计算
arithmetic fourier transform
fast fourier transform
off-line calculating
