Bistatic 3D SAR for wall parameter extraction in cluttered environments

Through-wall radar is an emergent technology rooted in urban surveillance, a key component being synthetic aperture (SAR). Accurate through-wall SAR relies on knowledge of the refractive index and thickness any obscuring walls. Such information rarely known beforehand subject to change sample-by-sample basis. It therefore necessary obtain material properties conjunction with measurement. In this letter, remote data-driven asymmetric bistatic approach taken by means matching range direct back face reflection explicit geometry-based model. The proposed method accurate measurement geometry. Using bright from front wall, for refining estimate geometry proposed. This extended three-dimensions improve usability heavily cluttered environments. empirically validated using three-dimensional measurements both wall-only, scene. shown accurately extract concrete agreement each other independent validation