Directions of Arrival and Channel Parameters Estimation in Multipath Underwater Environment

In this paper, we consider joint estimation of the Direction-of-arrival (DOA) and channel parameters of fully correlated sources impinging on a linear array sensors in Underwater multipath environment. Amindavar et al.[1] proposed a blind techniques for simultaneous estimation of the DOA and the channel parameters based on the assumption that the source signal can be modeled by a sum of weighted complex exponentials. We extend the algorithm by assuming that partial information of the source signal, i.e., the number of signal components and their carrier frequencies, is known. We shall show that the estimation performance can be improved when exploiting the prior information.