Alonso, Kevin und Marshall, David und Schneider, Mathias und Bachmann, Martin und Carmona, Emiliano und de los Reyes, Raquel und Gerasch, Birgit und Holzwarth, Stefanie und Langheinrich, Maximilian und Figueiredo Vaz Pato, Miguel und Krawczyk, Harald und Schwind, Peter und Storch, Tobias (2022) EnMap In-flight Calibration Status. 2nd Workshop on International Cooperation in Spaceborne Imaging Spectroscopy, 2022-10-19 - 2022-10-21, Frascati, Italien.
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Offizielle URL: https://hyperspectral2022.esa.int/
Kurzfassung
The Environmental Mapping and Analysis Program (EnMAP) hyperspectral satellite mission was successfully launched on 1st April 2022. The mission aims to monitor and characterise Earth’s environment in the spectral range from 420 - 2450 nm. The VNIR sensor provides 91 science channels ranging from 420 - 1000 nm with an average Spectral Sampling Distance (SSD) of 6.5 nm. While the SWIR sensor covers the range from 900 - 2450 nm with 131 channels and 10nm SSD. - The off-nadir pointing capability (up to 30 degrees) enables 5000 km to be monitored per day, with a swath width of 30 km and a spatial resolution of 30 m. The EnMAP satellite is equipped with several subsystems which allow periodic in-flight monitoring and calibration. The Full Aperture solar Diffuser Assembly (FADA) is used for absolute radiometric calibration. The On-Board Calibration Assembly (OBCA) is composed of 2 integrating spheres: one is coated with a doped diffuser material and is used for the spectral calibration; the second sphere, coated with a white spectralon, is used for Radiometric stability monitoring. Linearity LEDs are placed in front of the detector to monitor their linearity by measuring the response at constant illumination with increasing integration times. The Shutter Calibration Mechanism (SCM) allows for measurements with no light input to be performed in order to compute Dark Signal values and, in combination with Deep Space measurements, to compute any existing shutter emission in the SWIR range. This contribution will present a summary of the calibration activities performed during the EnMAP Commissioning Phase.
elib-URL des Eintrags: | https://elib.dlr.de/190653/ |
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Dokumentart: | Konferenzbeitrag (Vortrag) |
Titel: | EnMap In-flight Calibration Status |
Autoren: | |
Datum: | 20 Oktober 2022 |
Referierte Publikation: | Nein |
Open Access: | Ja |
Gold Open Access: | Nein |
In SCOPUS: | Nein |
In ISI Web of Science: | Nein |
Status: | veröffentlicht |
Stichwörter: | hyperspectral, remote sensing, EnMAP, calibration |
Veranstaltungstitel: | 2nd Workshop on International Cooperation in Spaceborne Imaging Spectroscopy |
Veranstaltungsort: | Frascati, Italien |
Veranstaltungsart: | internationale Konferenz |
Veranstaltungsbeginn: | 19 Oktober 2022 |
Veranstaltungsende: | 21 Oktober 2022 |
Veranstalter : | ESA |
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr |
HGF - Programm: | Raumfahrt |
HGF - Programmthema: | Erdbeobachtung |
DLR - Schwerpunkt: | Raumfahrt |
DLR - Forschungsgebiet: | R EO - Erdbeobachtung |
DLR - Teilgebiet (Projekt, Vorhaben): | R - EnMAP Phase D-Extra |
Standort: | Berlin-Adlershof , Oberpfaffenhofen |
Institute & Einrichtungen: | Institut für Methodik der Fernerkundung > Photogrammetrie und Bildanalyse Deutsches Fernerkundungsdatenzentrum > Dynamik der Landoberfläche |
Hinterlegt von: | Carmona, Dr. Emiliano |
Hinterlegt am: | 25 Nov 2022 10:11 |
Letzte Änderung: | 24 Apr 2024 20:51 |
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