A parametric technique for time delay estimation

Estimating the time-delay between two received signals is formulated as a parameter estimation problem for a certain spectral model. The model parameters are computed by a two step procedure: The modified Yule-Walker equations are used to estimate the autoregressive coefficients of the source signal, and a frequency domain squared error criterion is minimized to provide the delay estimate. The proposed technique is compared by simulations to the parametric techniques of Hamon-Hannan and Chan-Riley-Plant and is found to have better performance.