Adaptive Subaperture Integration for Wide-Angle Synthetic Aperture Radar

In this article, we present an adaptive subaperture integration method for wide-angle synthetic aperture radar (SAR) improved imaging, with emphasis on short-to-medium range applications. order to avoid full-aperture integration, traditional approaches use fixed-width subapertures, which may not conform the persistence angle of scatterers. Coherent gains over are possible if is carried out scatterers, because integrating shorter than spread scattering response across multiple subapertures or, conversely, more cause noise accumulation along useful signal. propose change-point detection methods estimate widths and consequently enhance coherent gains, resulting in imaging. We compare our proposed standard as well a recently approach. provide qualitative quantitative analyses prove that outperform existing approaches. experimental results real-data low-terahertz publicly available dataset validate claims.