Time delay estimation in a multipath context

A second-order blind deconvolution algorithm is utilized to improve on interception and classification procedures. It consists of applying the subspace decompostion algorithm described in [10] to several portions of the observation received on a single sensor, and then of estimating the source signal cleaned from its interferences caused by the multipath propagation. Asymptotic performances are lastly analyzed in terms of mean and variance of the estimated filters.