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APEX Calibration Facility: Status and first commissioning results

Suhr, Birgit and Fries, Jochen and Gege, Peter and Schwarzer, Horst (2006) APEX Calibration Facility: Status and first commissioning results. In: Proc. of SPIE Conference "Sensors, Systems, and Next-Generation Satellites X", 6361 (34). SPIE DL. SPIE Europe: Remote Sensing Conference, 2006-09-11 - 2006-09-14, Stockholm, Schweden. ISBN 0-8194-6456-2

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Official URL: http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1332000


The paper presents the current status of the operational calibration facility that can be used for radiometric, spectral and geometric on-ground characterisation and calibration of imaging spectrometers. The European Space Agency (ESA) co-funded this establishment at DLR Oberpfaffenhofen within the framework of the hyper-spectral imaging spectrometer Airborne Prism Experiment (APEX). It was designed to fulfil the requirements for calibration of APEX, but can also be used for other imaging spectrometers. A description of the hardware set-up of the optical bench will be given. Signals from two sides can alternatively be sent to the hyper-spectral sensor under investigation. Frome one side the spatial calibration will be done by using an off-axis collimator and six slits of different width and orientation to measure the line spread function (LSF) in flight direction as well as across flight direction. From the other side the spectral calibration will be performed. A monochromator provides radiation in a range from 380 nm to 13 μm with a bandwidth between 0.1 nm in the visible and 5 nm in the thermal infrared. For the relative radiometric calibration a large integrating sphere of 1.65 m diameter and exit port size of 55 cm × 40 cm is used. The absolute radiometric calibration will be done using a small integrating sphere with 50 cm diameter that is regularly calibrated according to national standards. This paper describes the hardware components and their accuracy, and it presents the software interface for automation of the measurements.

Item URL in elib:https://elib.dlr.de/45146/
Document Type:Conference or Workshop Item (Speech)
Title:APEX Calibration Facility: Status and first commissioning results
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Suhr, Birgitbirgit.suhr (at) dlr.deUNSPECIFIED
Fries, Jochenjochen.fries (at) dlr.deUNSPECIFIED
Gege, Peterpeter.gege (at) dlr.deUNSPECIFIED
Schwarzer, Horsthorst.schwarzer (at) dlr.deUNSPECIFIED
Date:November 2006
Journal or Publication Title:Proc. of SPIE Conference "Sensors, Systems, and Next-Generation Satellites X"
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Meynart, RolandESA
Neeck, Steven P.NASA Headquarters, USA
Shimoda, HaruhisaTokai Univ
Publisher:SPIE DL
Series Name:SPIE Proceedings
Keywords:Kalibrierung, Hyperspektralscanner, abbildende Spektrometer, optische Bank
Event Title:SPIE Europe: Remote Sensing Conference
Event Location:Stockholm, Schweden
Event Type:international Conference
Event Dates:2006-09-11 - 2006-09-14
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Spektrometrische Verfahren und Konzepte der Fernerkundung (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Experimental Methods
Deposited By: Suhr, Birgit
Deposited On:06 Nov 2006
Last Modified:13 Aug 2014 09:28

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