Time-delay estimation for deterministic transient signals in a multipath environment

Document Type

Conference Proceeding

Date of Original Version



We consider the problem of estimating the arrival times of overlapping ocean-acoustic signals from a noisy received waveform which consists of scaled and delayed replicas of a deterministic transient signal. We assume that the transmitted signal and the number of paths in the multipath environment are known. In previous papers [1, 2, 3], we have developed tools for finding least-squares estimates of the amplitude and time delay of each path. In this paper these tools are combined to form a complete algorithm. The algorithm is a function of several data-dependent parameters, and we give rules for choosing these parameters. The algorithm is demonstrated on a synthetic 4-Path example in which the paths cannot be resolved by standard cross-correlation techniques.

Publication Title

ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings