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High-resolution temperature and emissivity mapping (HiTeSEM): A satellite sensor concept for hyperspectral thermal remote sensing

Udelhoven, Thomas and Schlerf, Martin and Bossung, Christian and Segl, Karl and Eisele, Andreas and Storch, Tobias and Müller, Andreas and Reulke, Ralf and Rock, Gilles and Fischer, Peter and Knigge, Thiemo (2015) High-resolution temperature and emissivity mapping (HiTeSEM): A satellite sensor concept for hyperspectral thermal remote sensing. 9th EARSel SIG imaging spectroscopy workshop, 14.-16. Apr. 2015, Luxembourg, Luxembourg.

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Official URL: http://www.earsel2015.com/fileadmin/user_upload/Program_short.pdf

Abstract

HiTeSEM (High-resolution Temperature and Spectral Emissivity Mapping) is a preparatory study, funded by the German Aerospace Center (DLR) that aims at preparing the floor for a future spaceborne hyperspectral thermal mission. Up to now this spectral region in Earth observation is mainly used to measure surface temperature. Nevertheless, the spectrally dispersed signal between 8μm and 12 μm can provide information about abundances of key rock and soil forming minerals as well as the status of vegetation. HiTeSEM aims at closing the research gap still hampering utilization of the thermal infrared data at reasonable spectral and spatial resolution and focusses on surface-solid Earth interactions to assess natural and human-induced changes. Land surface temperature (LST) and spectral emissivity (LSE) of the Earth are the basis for the extraction of sensitive variables in geology, pedology, vegetation monitoring, and biosphere-pedosphere interaction. Towards this end, HiTeSEM will enable the research community to evaluate the potential of emissive spectroscopy methodologies in Earth observation to answer a series of key science questions related to global change, human health, and food security. Relevant target variables include soil mineral composition, soil organic matter (SOM), surface moisture availability, evapotranspiration and stomatal/surface conductance. These are key indicators for soil productivity and plant stress in sensitive regions and can be used to govern and adapt land use practices under challenging ecological and climatic conditions. In urban remote sensing HiTeSEM is expected to furnish important information to define thermal models, which implies knowledge of the surface material composition by means of spectral emissivity retrieval. The methodological challenge of HiTeSEM lies in the development of a robust high performance temperature emissivity separation (TES) technique to allow optimum pre-processing of the measured thermal radiance signal at the sensor level. The above science goals define the technical baseline for the proposed mission, namely a system composed of a thermal infrared spectrometer covering the spectral region of 8 – 12.5 µm with ~75 spectral channels, a swath width of 50 km - 100 km, and a ground IFOV of 60 x 60 m2 (TIR, hyperspectral) and 20 x20 m2 (TIR, broadband). The retrieval of emissivity spectra requires low noise equivalent temperatures, in the order of 0.05 K @ 300 K.

Item URL in elib:https://elib.dlr.de/96251/
Document Type:Conference or Workshop Item (Speech)
Title:High-resolution temperature and emissivity mapping (HiTeSEM): A satellite sensor concept for hyperspectral thermal remote sensing
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Udelhoven, ThomasUniversity of TrierUNSPECIFIED
Schlerf, MartinLuxembourg Institute of Science and Technology (LIST)UNSPECIFIED
Bossung, ChristianUniversity of TrierUNSPECIFIED
Segl, KarlHelmholtz Centre PotsdamUNSPECIFIED
Eisele, AndreasHelmholtz Centre PotsdamUNSPECIFIED
Storch, TobiasGerman Aerospace CenterUNSPECIFIED
Müller, AndreasGerman Aerospace CenterUNSPECIFIED
Reulke, RalfGerman Aerospace CenterUNSPECIFIED
Rock, GillesUniversity of TrierUNSPECIFIED
Fischer, PeterGerman Aerospace CenterUNSPECIFIED
Knigge, ThiemoAirbus Defence and Space S.A.S.UNSPECIFIED
Date:April 2015
Refereed publication:No
Open Access:No
In DOAJ:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:hyperspectral
Event Title:9th EARSel SIG imaging spectroscopy workshop
Event Location:Luxembourg, Luxembourg
Event Type:Workshop
Event Dates:14.-16. Apr. 2015
Organizer:European Association of Remote Sensing Laboratories
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Geowissenschaftl. Fernerkundungs- und GIS-Verfahren
Location: Berlin-Adlershof , Oberpfaffenhofen
Institutes and Institutions:Institute of Optical Sensor Systems
German Remote Sensing Data Center
Remote Sensing Technology Institute > Photogrammetry and Image Analysis
Deposited By: Fischer, Peter
Deposited On:12 May 2015 13:12
Last Modified:16 Dec 2015 10:24

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