数据采集与处理2017，Vol.32Issue(3)：588-594,7.DOI:10.16337/j.1004-9037.2017.03.018
改进的DFT插值频率估计算法及其DSP实现
Improved Frequency Estimation Algorithm Using DFT Interpolation and Its Implementation on DSP
摘要
Abstract
This paper proposes an improved frequency estimation algorithm using discrete Fourier transform (DFT) interpolation based on the Quinn algorithm and iterative interpolation algorithm (A&M algorithm).The proposed algorithm first uses a frequency error estimated by the Quinn algorithm as the initial error value of the iterative estimation algorithm.Then frequency error is estimated accurately by the iteration algorithm.The algorithm can effectively reduce the number of iterations and guarantee the precision of estimation results,thus improving the computational efficiency.To enhance the efficiency of the algorithm on the DSP processor,this paper also proposes an optimization method for the implementation of the algorithm on the DSP processor,which is helpful for the application of the algorithm in real time.The simulation results show that the proposed algorithm can increase the frequency estimation accuracy,and the efficiency of real-time computation with good anti-noise performance.关键词
频率估计/离散傅里叶变换插值/估计精度Key words
frequency estimation/discrete Fourier transform(DFT) interpolation/estimation precision分类
信息技术与安全科学引用本文复制引用
郑威,陈德昶,刘红星..改进的DFT插值频率估计算法及其DSP实现[J].数据采集与处理,2017,32(3):588-594,7.基金项目
国家自然科学基金(61601206)资助项目 （61601206）
江苏省自然科学基金(BK20160565)资助项目 （BK20160565）
江苏省高校自然科学研究(15KJB310003)资助项目. （15KJB310003）
