An Improved Rife Algorithm of Frequency Estimation for Frequency-Hopping Signal
SUN Weitao
ZHANG Zhibao
LUO Wenfeng
WANG Fan
Abstract：This paper analysises the performance of Rife algorithm and points out that the performance is poor when the true frequency is much close to quantized frequency of FFT.Aiming at this problem,an improved Rife algorithm is presented.This algo-rithm can make the signal frequency always located in the center between the two neighboring discrete frequencies by using zoom FFT technique. Then,in order to elminate the impact of nosie for the Rife algorithm,this paper proposes to correct the improved Rife algorithm by using the window function for the signal.Simulation result shows that the improved algorithm has high estimation accuracy,strong anti-noise performance and good stability.
Keywords：Rife algorithmimproved Rife algorithmzoom FFTfrequency estimationfrequency hopping signal
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 870-873,884 )