A Satellite On-Board SAR Processing Chain for Generation of Rapid Civil Alerts

Konferenz: EUSAR 2021 - 13th European Conference on Synthetic Aperture Radar
29.03.2021 - 01.04.2021 in online

Tagungsband: EUSAR 2021

Seiten: 5Sprache: EnglischTyp: PDF

Wiehle, Stefan; Guenzel, Dominik; Tings, Bjoern; Breit, Helko; Balss, Ulrich; Mandapati, Srikanth (German Aerospace Center (DLR), Remote Sensing Technology Institute, Germany)

This paper describes the concept and prototype implementation of a satellite on-board SAR processing chain designed for Maritime Situation Awareness. It aims to reduce the latency between data acquisition and product delivery to about 3-4 minutes. SAR processing is one component of a larger prototype system being developed in the frame of the H2020 EO-ALERT project. It further comprises an optical data chain, data compression/encryption, and delivery. The system employs multiple boards with Multi-Processor-System-On-Chip (MPSoC) combining FPGAs and ARM CPUs. A tailored workflow and adapted L1 and L2 processing algorithms ensure that the requirements for latency and product quality are met.