MEM and ARMA estimators of signal carrier frequency

Two estimators for the carrier frequency of different classes of signals are proposed. These estimators are based on modeling the signal with either an autoregressive AR (2) model, or a mixed autoregressive, moving-average, ARMA (2, 2) model. In addition, an equation is derived to obtain the spectrum peak frequencies directly from the model parameters, thus eliminating the step of calculating the spectrum across the whole band. This equation enables us to obtain a closed form for the estimation error.