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Operational atmospheric correction for imaging spectrometers accounting for the smile effect

Richter, Rudolf and Schläpfer, Daniel and Müller, Andreas (2011) Operational atmospheric correction for imaging spectrometers accounting for the smile effect. IEEE Transactions on Geoscience and Remote Sensing, 49 (5), pp. 1772-1780. IEEE - Institute of Electrical and Electronics Engineers. DOI: 10.1109/TGRS.2010.2089799

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Abstract

Hyperspectral pushbroom imagers are affected by a number of artifacts, such as pixel-nonuniformity, spectral smile, and keystone. These have to be taken into account during system-correction, ortho-rectification, or atmospheric correction, as performed in processing and archiving facilities (PAFs). This contribution is presenting an efficient and accurate smile correction method integrated in the atmospheric correction. The proposed technique will be used in the PAF of the German hyperspectral EnMAP mission. The spectral smile shift across the detector array is parametrized with a 4th order polynomial function for each channel based on the instrument optical design model or measured laboratory data. Alternatively, spectral smile shifts can be calculated from image data using channels in atmospheric absorption regions. The concept for the time-optimized processor is outlined and results are presented for simulated EnMAP data and existing pushbroom imagery (Hyperion, AISA, Hyspex).

Item URL in elib:https://elib.dlr.de/70120/
Document Type:Article
Title:Operational atmospheric correction for imaging spectrometers accounting for the smile effect
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Richter, Rudolfrudolf.richter (at) dlr.deUNSPECIFIED
Schläpfer, DanielReSe ApplicationsUNSPECIFIED
Müller, Andreasandreas.mueller (at) dlr.deUNSPECIFIED
Date:14 July 2011
Journal or Publication Title:IEEE Transactions on Geoscience and Remote Sensing
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:49
DOI :10.1109/TGRS.2010.2089799
Page Range:pp. 1772-1780
Publisher:IEEE - Institute of Electrical and Electronics Engineers
Status:Published
Keywords:EnMAP, pushbroom imaging spectrometer, smile, surface reflectance, water vapor
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 Anwendungen Erdbeobachtung - HGF-Kooperation EOS (old)
Location: Oberpfaffenhofen
Institutes and Institutions:German Remote Sensing Data Center > Land Surface
Deposited By: Richter, Dr.-Ing. Rudolf
Deposited On:14 Jul 2011 13:28
Last Modified:08 Mar 2018 18:34

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