ALGORITHM FOR NONSTATIONARY DELAY ESTIMATION

A computationally efficient algorithm for estimating time delay betwee n signals received at two spatially separated sensors is proposed. The delay estimate is adapted directly to maximise the mean product of th e first sensor output and the filtered output of the second received s ignal. The convergence behaviour and variance of the delay estimate ar e derived. It is shown that the proposed algorithm outperforms the exp licit time delay estimator at a low signal-to-noise ratio.