Multistatic Synthetic Aperture Radar Coherent Change Detection for Non-overlapping Radar Trajectories

 Synthetic Aperture Radar (SAR) Coherent Change Detection (CCD) provides sensitive detection of changes on the ground, and typically relies on repeated radar platform passes with very similar geometries. For a constellation of SAR satellites, it may take 10-20 days for a revisit over an area of interest. Within this time, natural processes such as wind and rain may have degraded the quality and interpretability of the CCD images, obscuring changes in the scene. Thus, the ability to utilize radar platform trajectories that are substantially different would allow for faster revisit times and allow for a faster response to developing situations. This research investigates the effectiveness of non-overlapping multistatic radar trajectories for CCD and methods to best utilise the collected data.