Williams, Mick; Dickins, Glenn; Kennedy, Rodney; Abhayapala, Thushara
In this paper, we demonstrate that the performance of a direction of arrival (DOA) estimator is fundamentally limited by the size of the region over which we measure a wavefield. That is, even assuming continuous field measurements across the region, we still cannot achieve perfect performance. We use an approach based on modal decomposition of a spatially truncated field, and completely independent of sensor geometry, to derive the Cramér-Rao Bound (CRB) for spatially-limited DOA estimators....[Show more]
Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.