电讯技术2016，Vol.56Issue(10)：1129-1133,5.DOI:10.3969/j.issn.1001-893x.2016.10.012
基于改进DFT相位差的正弦波频率估计
Sinusoidal Signal Frequency Estimation Based on Improved DFT Phase Difference
王晓峰 1邢敏捷 2刘歌 1赵汝鹏1
作者信息
- 1. 空军航空大学 信息对抗系，长春130022
- 2. 解放军93175部队，长春130051
- 折叠
摘要
Abstract
The frequency offset sensitivity problem of discrete Fourier transform ( DFT ) phase difference method in sinusoid wave frequency estimation is studied. An improved DFT phase difference frequency esti-mation method is presented. Firstly,the mean-squared error( MSE) of DFT phase difference method is de-duced. And then,an improved DFT phase difference frequency estimation method based on Rife interpola-tion is proposed. The improved method has well solved the problem of sensitivity to frequency offset. The computer simulation results indicate that the improved method has higher estimation accuracy in any fre-quency offset,and its estimation performance is close to Cramer-Rao lower bound( CRLB) .关键词
正弦波频率估计/频偏敏感/DFT相位差/Rife插值Key words
sinusoidal signal frequency estimation/frequency offset sensitivity/DFT phase difference/Rife interpolation分类
信息技术与安全科学引用本文复制引用
王晓峰,邢敏捷,刘歌,赵汝鹏..基于改进DFT相位差的正弦波频率估计[J].电讯技术,2016,56(10):1129-1133,5.
