Direction of arrival (DOA) estimation of a wideband acoustic source in multipath environment using spatial sparsity

This paper proposes a novel method for direction-of-arrival (DOA) estimation in azimuth based on spatial sparsity for a wideband acoustic signal using a uniform linear array. The performance of this method is compared with classic subspace based methods such as Root-MUSIC and ESPRIT. In the presence of a multipath reflection, the proposed spatial sparsity based method performs significantly better at low SNRs. The performance of this method is also analyzed for various number of antenna elements, signal samples/snapshots and strengths of multipath reflection using RMS Error as a performance metric.