Title :
An extended Kalman filter frequency tracker for high-noise environments
Author :
Scala, Barbara F La ; Bitmead, Robert R. ; Quinn, Barry G.
Author_Institution :
Dept. of Electr. Eng., Melbourne Univ., Parkville, Vic., Australia
fDate :
2/1/1996 12:00:00 AM
Abstract :
The problem of constructing a frequency tracker for weak, narrowband signals with slowly varying frequency is considered. An extended Kalman filter is proposed that uses prior knowledge of the nature of the signal to overcome the difficulties presented by the inherent nonlinearity of the problem and the very low signal-to-noise ratios
Keywords :
Kalman filters; interference (signal); noise; state-space methods; tracking; extended Kalman filter frequency tracker; high-noise environments; nonlinearity; slowly varying frequency; state space model; very low signal-to-noise ratios; weak narrowband signals; Band pass filters; Fourier transforms; Frequency estimation; Narrowband; Noise level; Signal processing; Signal sampling; Signal to noise ratio; Stability; State-space methods;
Journal_Title :
Signal Processing, IEEE Transactions on
