摘要
基于最小均方误差相位差分频率估计原理，提出了能够直接处理实正弦信号的相位差分频率估计算法。新的修改算法利用零交越或FFT变换，能快速有效地在时域或频域上得到实正弦信号的相位信息，改善了频率估计的SNR阈值，且便于工程实现。
Based on the principle of minimum mean square error frequency estimation from phase differences,the new modified frequency estimation methods from phase differences directly for real sinusoidal signal are presented in this paper.The new methods can rapidly and efficiently obtain the informations of a real sinusoidal signal's phase on time domain or frequency domain by zero-crossings or FFT transforming.The modified methods can extend the threshold SNR of frequency estimation,and it is easily implemented.
出处
《电子科技大学学报》
EI
CAS
CSCD
北大核心
1999年第2期120-123,共4页
Journal of University of Electronic Science and Technology of China
基金
电子部预研基金
关键词
频率估计
相位差分
过零点
FFT变换
frequency estimation
phase differences
zero-crossings
fast Fourier transform
