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Conference Agenda

Overview and details of the sessions of this conference. Please select a date or location to show only sessions at that day or location. Please select a single session for detailed view (with abstracts and downloads if available).

Daily Overview

Session

📌Poster Session and Networking Aperitivo 🍷
Location: Lower Lobby

Presentation 2

An Open-Source and Gpu Sar Polarimetric Processor for Ers-1/2 and Envisat

Clément Albinet¹, Michael Aspetsberger², Massimo Cardaci³, Helen Clifton⁴, Fabiano Costantini⁴, Laura Fioretti⁵, Marco Galli³, Andreas Hangler², Lisa Haskell⁴, Chloe Martella³, Sabrina Pinori³, Andrea Recchia⁵, Florian Steinschorn², John Swinton⁴

1: European Space Agency / Agence Spatiale Européenne, Italy; 2: Cloudflight, Austria; 3: SERCO, Italy; 4: Telespazio, UK; 5: Aresys, Italy

The ERS-1 satellite was launched on 17th July 1991, ERS-2 on 21st April 1995, and ENVISAT on 1st March 2002. These three satellites all carried a Synthetic Aperture Radar (SAR) operating at C-band and acquired some data over two decades. All ERS-1/2 and ENVISAT SAR products, in accordance with ESA Earth Observation Data Policy, are freely available to users [1][2]. While some products have been bulk processed, other products are generated On-the-Fly using the same SAR processor. However, this processor is currently closed source, and no Algorithm Theoretical Baseline Document (ATBD) is available.

In 2023 an activity was started to develop from scratch a new SAR processor that is to be Open-Source, with an open ATBD, and capitalizing on GPU processing.

The objectives are:

- to step-up the possibilities of ESA service to its end users, both for On-The-Fly services, and to facilitate the execution of massive reprocessing campaigns by reducing both the processing times and associated costs;

- to progress in the migration away from proprietary code;

- to eliminate the dependencies from old legacy libraries;

- To facilitate the agility and the effectiveness in keeping up with IT security changes and evolutions.

These objectives shall be achieved while fulfilling all scientific requirements. This development represents a big step in the direction of Open-Science.

This paper will present the new SAR processor and a comparison between the legacy and the new processor in term of data quality and processing speed.

References

[1] https://earth.esa.int/eogateway/instruments/sar-ers

[2] https://earth.esa.int/eogateway/instruments/asar