素因子分解局部频率细化快速算法

本文提出一种新的局部频率细化快速算法．它可以对信号频谱中任意感兴趣的局部窄带作高分辨率细化分析，所需的乘法次数少于通用的复调制等其它频率细化算法，且分析精度高，方法简明，尤其适合长序列信号的频谱分析．

In this paper, a new partial (narrowband)spectrum computation method called the prime factor zonm (PFZ)algorithm is presented,which can analyze a narrowband selected in the signal spectrum with high resolution.Its number of multiplication operations is less than current oom FFT algorithms,e.g.,the complex modulation zoom FFT.Moreover,it offers high analysis accuracy and simplifying scheme.The PFZ algorithm is especially suited to calculate the frequency spectrum of a long data sequence.