Accuracy analysis of frequency estimated by applying time-shifting correcting method of phase difference in presence of Gaussian white noise
Kang Ding · 2007
A statistical formula of normalized frequency error estimation is deduced by applying time-Shifting correcting method of phase difference to the harmonics in presence of Gaussian white noise.The truncated signals can be multiplied by any kind of symmetry window functions.In both the cases that the signal is multiplied by either a rectangle or an Hanning window function,comparison between theoretical forms and analog results has been made to verify the correctness.In addition,reasons for deviation in certain conditions have been analyzed.The intrinsic factors of harmonics and the selected parameters of correct methods which will have influences on the estimation error have been studied.The comparison of the estimation error between rectangle window function and Henning window function has also been made.