南京理工大学学报（自然科学版）2012，Vol.36Issue(6)：989-992,4.
正弦信号频率估计算法研究
Frequency Estimation Algorithm of Sinusoidal Signals
摘要
Abstract
To estimate the frequency of sinusoidal signals in noise accurately, an algorithm of frequency estimation for sinusoidal signals with arbitrary length is researched. The lengths of the samples are taken as integral powers of 2 and the frequency of truncated sequences is estimated based on the interpolation algorithm. The corresponding index of maximum amplitude of spectrum for the original signal is given according to the relationship among the frequency, the frequency resolution and the index of spectrum with biggest amplitude. The frequency estimation for sinusoidal signals with arbitrary length is solved by using interpolation. Simulation results show that the performances of the proposed algorithm do not vary with the change of signal frequency and attains the Cramer-Rao lower bound of sinusoidal signal.关键词
正弦信号/频率估计/谱线插值/克拉美-罗限Key words
sinusoidal signals/frequency estimation/interpolation/Cramer-Rao lower bound分类
信息技术与安全科学引用本文复制引用
何一鸣,张刚兵,钱显毅..正弦信号频率估计算法研究[J].南京理工大学学报（自然科学版）,2012,36(6):989-992,4.基金项目
江苏省高校自然科学基金(12KJD510002) （12KJD510002）
常州工学院校级科研基金(YN1101) （YN1101）
