Low-Complexity High-Order Propagator Method for Near-Field Source Localization

In this paper, an efficient high-order propagator method is proposed to localize near-field sources. We construct a specific non-Hermitian matrix based on the high-order cumulant of the received signals. With its columns and rows, we can obtain two subspaces orthogonal to all the columns of two steering matrices, respectively, with which the estimation of the directions of arrival (DOA) and ranges of near-field sources can be achieved. Different from other methods, the proposed method needs only one matrix for estimating two parameters separately, therefore leading to a smaller computational burden. Simulation results show that the proposed method achieves the same performance as the other high order statistics-based methods with a lower complexity

Low-Complexity High-Order Propagator Method for Near-Field Source Localization

International audienceIn this paper, an efficient high-order propagator method is proposed to localize near-fieldsources. We construct a specific non-Hermitian matrix based on the high-order cumulant of thereceived signals. With its columns and rows, we can obtain two subspaces orthogonal to all thecolumns of two steering matrices, respectively, with which the estimation of the directions of arrival(DOA) and ranges of near-field sources can be achieved. Different from other methods, the proposedmethod needs only one matrix for estimating two parameters separately, therefore leading to asmaller computational burden. Simulation results show that the proposed method achieves the sameperformance as the other high order statistics-based methods with a lower complexity