Understanding Spaceborne Missions for TomoSAR Imaging with Multi-Angular Acquisitions

This paper presents an analysis on the achievable improvement in the range resolution for low-bandwidth space-borne systems by combining ascending and descending Tomography SAR acquisitions. The analysis is performed by means of a Multiple-Baseline Circular SAR campaign from the German Aerospace Center's F-SAR sensor over a forested area in Kaufbeuren, Germany. Splitting the circular acquisition into subapertures and combining the ones from opposite angles, ascending-descending acquisitions are simulated.