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First test results of airborne dispersive pushbroom spectrometer APEX


Itten, K I; Meuleman, K; Schaepman, M E; Alberti, E; Bomans, B; Dell'Endice, F; D’Odorico, P; Hueni, A; Kneubühler, M; Nieke, J; Schläpfer, D; Ulbrich, G J (2009). First test results of airborne dispersive pushbroom spectrometer APEX. In: 6th Workshop on Imaging Spectroscopy, Tel Aviv, Israel, 16 March 2009 - 19 March 2009, 1-5.

Abstract

APEX (Airborne Prism EXperiment) is a project being developed by a joint Swiss-Belgian consortium on behalf of the European Space Agency ESA-PRODEX programme. It comprises an airborne dispersive pushbroom imaging spectrometer, a Calibration Home Base (CHB) for instrument calibration operations and a dedicated data Processing and Archiving Facility (PAF). A unique In-Flight Characterization (IFC) unit is integrated within the optical sensor, providing pre- and post- data-take characterization data to monitor the instrument stability along the mission and improve the delivered data. The imaging spectrometer sensor is operating in the solar reflected wavelengths range between 380 nm and 2500 nm, by means of two dispersive spectrometer channels that partially share the optical path. The achieved resolution amounts to 1000 spatial across track samples over an overall FoV of 28°, with more than 300 configurable spectral bands. The instrument has been engineered to provide high quality data for scientific applications, in particular focusing on topics as limnology, vegetation, snow and soil analyses among others, and to simulate and support the development of future spaceborne remote sensing instrumentation. The APEX PAF includes (a) the calibration of the acquired data from raw instrument data stream to physical units, (b) geometric and atmospheric correction for each scene, and (c) instrument calibration data management. APEX is now in a pre-operational setup and testing activities, including fine-tuning, extended calibration operations and test flights are taking place. This paper outlines the system validation procedures as well as preliminary performance results.

Abstract

APEX (Airborne Prism EXperiment) is a project being developed by a joint Swiss-Belgian consortium on behalf of the European Space Agency ESA-PRODEX programme. It comprises an airborne dispersive pushbroom imaging spectrometer, a Calibration Home Base (CHB) for instrument calibration operations and a dedicated data Processing and Archiving Facility (PAF). A unique In-Flight Characterization (IFC) unit is integrated within the optical sensor, providing pre- and post- data-take characterization data to monitor the instrument stability along the mission and improve the delivered data. The imaging spectrometer sensor is operating in the solar reflected wavelengths range between 380 nm and 2500 nm, by means of two dispersive spectrometer channels that partially share the optical path. The achieved resolution amounts to 1000 spatial across track samples over an overall FoV of 28°, with more than 300 configurable spectral bands. The instrument has been engineered to provide high quality data for scientific applications, in particular focusing on topics as limnology, vegetation, snow and soil analyses among others, and to simulate and support the development of future spaceborne remote sensing instrumentation. The APEX PAF includes (a) the calibration of the acquired data from raw instrument data stream to physical units, (b) geometric and atmospheric correction for each scene, and (c) instrument calibration data management. APEX is now in a pre-operational setup and testing activities, including fine-tuning, extended calibration operations and test flights are taking place. This paper outlines the system validation procedures as well as preliminary performance results.

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Additional indexing

Item Type:Conference or Workshop Item (Other), not refereed, original work
Communities & Collections:07 Faculty of Science > Institute of Geography
Dewey Decimal Classification:910 Geography & travel
Uncontrolled Keywords:processing, airborne, imaging, pushbroom, spectrometer, calibration
Language:English
Event End Date:19 March 2009
Deposited On:22 Oct 2009 15:46
Last Modified:06 Dec 2017 21:24
Publisher:European Association of Remote Sensing Laboratories
Additional Information:The paper will be published in Proceedings of the 6th EARSeL SIG IS workshop.
Official URL:http://www.earsel6th.tau.ac.il/Programme.html

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