Unconventional Sources of Error in High-Resolution Wide-Swath SAR Systems based on Scan-On-Receive
Conference: EUSAR 2021 - 13th European Conference on Synthetic Aperture Radar
03/29/2021 - 04/01/2021 at online
Proceedings: EUSAR 2021
Pages: 4Language: englishTyp: PDF
Authors:
Bordoni, Federica; Krieger, Gerhard (Microwaves and Radar Institute, German Aerospace Centre (DLR), Germany)
Lind, David (Microwaves and Radar Institute, German Aerospace Centre (DLR), Germany & Centre for Mathematical Sciences, Mathematical Statistics, Lund University, Sweden)
Jakobsson, Andreas (Centre for Mathematical Sciences, Mathematical Statistics, Lund University, Sweden)
Abstract:
The scan-on-receive (SCORE) is a key digital beamforming (DBF) technique for future high-resolution wide-swath synthetic aperture radar (SAR) systems. A sharp and high gain receive beam, steered in real time towards the expected direction of arrival (DoA) of the backscattering signal, allows for improved SAR imaging performance with respect to a conventional approach. Nevertheless, it also exposes the system to new errors, associated with a mismatch between the expected and the actual DoA. This paper identifies possible sources of error, specific of SCORE-based systems, and investigates their effect on the SAR image quality in dependence of instrument and geometrical parameters.