Enabling the Forthcoming ROSE-L Sensor for a Two-Look ScanSAR Mode Configuration Without Modifying the System Parameters

Inhalt:
This work is focused on the forthcoming ROSE-L mission, which is planned to simultaneously experiment advanced engineering solutions, such ScanSAR, Scan On Receive (SCORE) and Displaced Phase Center (DPC). In particular, we propose a solution aimed at enabling ROSE-L for a two-look ScanSAR mode configuration without impairing key parameters, specifically, the azimuth resolution and the range swath extension, of the original system, which is instead designed to achieve only a one-look ScanSAR mode configuration. Specifically, we propose to properly shape the radiated azimuth beam, basically doubling its width, without upsetting the original design of the ROSE-L radar antenna and taking advantage of the degrees of freedom offered by its current layout tailored to the DPC configuration. The proposed solution is discussed through the use of some properly introduced figures of merit.