摘要
提出一种改进的基于FFT pruning的窄带高分辨率频谱计算方法。该方法是对Sreenivas's FFT pruning算法和Nagai的利用频移变换的FFT pruning算法的推广。同时提出输出点分级思想,可实现任意窄带上非2的整数幂次频点输出。该算法比Sreenivas's FFT pruning算法具有更小的计算量和更简单的信号流图。
An improved method of computing high-resolution narrow-band spectra is presented.This method is a generalization of Sreenivas＇s FFT pruning algorithm and in combination with Nagai＇s pruning with frequency shift.By dividing the output points into several series,non-power of two output points in arbitrary narrow band can be achieved.This improved algorithm has lower computational cost than Sreenivas＇s algorithm and has a simpler flow-graph.
出处
《计算机工程与应用》
CSCD
北大核心
2007年第26期54-55,141,共3页
Computer Engineering and Applications
基金
国家自然科学基金( the National Natural Science Foundation of China under Grant No60372022)
新世纪优秀人才支持计划( NoNCET- 05- 0806)
