Suppression of scattering waves from the outside of a search area using a gating technique in compressed sensing based scatterer detection

摘要

A compressed sensing technique can be used for scatterer detection with less antenna elements. The detection accuracy, however, degrades when scatterers exist also in the outside of a search area. In this paper, we propose a preprocessing scheme for compressed sensing based scatterer detection. The scheme uses a gating technique in a cross range, and suppresses scattering waves from the outside of a search area. Also, we introduce a wide area detection scheme dealing with scatterers located very close to the search area that the gating technique cannot suppress. We show the performance of scatterer detection with the proposed method.