Sublook SAR Tomography: A New Single-Baseline Technique for the Vertical Imaging of Semitransparent Media

Abstract:
This paper presents a new technique to retrieve low resolution vertical reflectivity profiles of semitransparent media by means of single-baseline synthetic aperture radar (SAR) interferometric acquisitions. The approach explores the dependency of the vertical wavenumber on the wavelength across the system bandwidth. By performing an inversion as a function of the vertical wavenumber, a low resolution vertical tomogram can be obtained. The paper expounds the mathematical framework of the technique, and the approach is demonstrated using simulations.