Nonlinear Estimation of Harmonic Signals
K. NISHIYAMA · IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences · 2007
A nonlinear harmonic estimator (NHE) is proposed for extracting a harmonic signal and its fundamental frequency in the presence of white noise. This estimator is derived by applying an extended complex Kalman filter (ECKF) to a multiple sinusoidal model with state-representation and then efficiently specializing it for the case of harmonic estimation. The effectiveness of the NHE is verified using computer simulations.