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Proceedings Paper

Bulk reprocessing of the ALOS PRISM/AVNIR-2 archive of the European Space Agency: level 1 orthorectified data processing and data quality evaluation
Author(s): Sébastien Saunier; Rubinder Mannan; Peter Schwind; Rupert Mueller; Tobias Storch; Roberto Biasutti; Ferran Gascon; Philippe Goryl; Marco Meloni
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Paper Abstract

The Advanced Land Observing Satellite (ALOS) was launched on January 24, 2006, by a Japan Aerospace Exploration Agency (JAXA) H-IIA launcher. It carries three remote sensing sensors: the Advanced Visible and Near Infrared Radiometer type 2 (AVNIR-2), the Panchromatic Remote-sensing Instrument for Stereo Mapping (PRISM), and the Phased Array type L-band Synthetic Aperture Radar (PALSAR).

Within the framework of ALOS Data European Node (ADEN), as part of the European Space Agency (ESA), has collected 5 years of data observed in Arctic, in Europe and in Africa through the ground stations of Tromsoe (Norway) and Matera (Italy).

Some data has been repatriated directly from JAXA from the on-board recorder (in particular over Africa, outside the visibility of the stations). The data were available to the scientific users via on-request ordering from the stations through the ESA ordering system. In ordering to provide a better and easier access to the data in the framework of the ESA Third Party Missions, in 2015 ESA started a project aimed to repatriate the data from the stations, consolidate them, harmonise the format to the ESA standards.

For the PALSAR data, view the different processing levels available to the users, ESA decided to setup a dissemination system, able to process automatically at the user demand the data to the requested level (on-the-fly processing). For the optical data, instead, the decision was to systematically process the PRISM and AVNIR-2 as orthorectified products (so to a higher level in respect of what available before) with a systematic quality control.

This paper presents the functionalities of the new Level 1 orthorectified products and details the block adjustment algorithms used for refinement of geometric accuracy. A specific quality control strategy has been laid down in order to re-analyse the entire archive. Also, validation methods are explained and the final product accuracy specification are given.

Paper Details

Date Published: 9 October 2018
PDF: 22 pages
Proc. SPIE 10789, Image and Signal Processing for Remote Sensing XXIV, 1078906 (9 October 2018); doi: 10.1117/12.2325618
Show Author Affiliations
Sébastien Saunier, Telespazio VEGA UK Ltd. (United Kingdom)
Rubinder Mannan, Telespazio VEGA UK Ltd. (United Kingdom)
Peter Schwind, Telespazio VEGA UK Ltd. (United Kingdom)
Rupert Mueller, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Tobias Storch, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Roberto Biasutti, European Space Agency (Italy)
Ferran Gascon, European Space Agency (Italy)
Philippe Goryl, European Space Agency (Italy)
Marco Meloni, Serco Italia S.p.A. (Italy)

Published in SPIE Proceedings Vol. 10789:
Image and Signal Processing for Remote Sensing XXIV
Lorenzo Bruzzone; Francesca Bovolo, Editor(s)

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