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Compact calibration source for thermal infrared Fourier-transform spectrometer

Shakun, A. and Martynovich, F. and Ignatiev, N. and Maturilli, Alessandro and Santos-Skripko, Aleksandr and Savosin, Vladimir and Stupin, Igor and Arnold, Gabriele and Grigoriev, A. and Korablev, O. (2019) Compact calibration source for thermal infrared Fourier-transform spectrometer. In: Proceedings of SPIE - The International Society for Optical Engineering, 11128, p. 1112803. Infrared Remote Sensing and Instrumentation XXVII 2019, 11.-15. Aug. 2019, San Diego, USA. DOI: 10.1117/12.2528692

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Abstract

Infrared Fourier-transform spectrometers (FTIR) onboard of the planetary missions are commonly used for the thermal sounding of the atmosphere and retrieval of aerosol profiles. To derive a calibrated spectrum of the target source, one needs three separate measurements: the target source itself and two calibration measurements of sources with known emissivity and temperature. An overview of the design of a compact in-built calibration source (a blackbody) emitting at 210-330 K for a spaceborne FTIR instrument is presented. Mechanically it is an aluminum structure matching the aperture of the instrument. The emissivity depends on its surface relief and finish. Four different types of surface shape are considered. The best-achieved emissivity is better than 0.99 (at 15 μm). The optimal placement of heaters allowing for minimal thermal non-uniformity (0.1 K) across the aperture is found. The accuracy of the thermal control is also 0.1 K. We discuss the thermal control system and its characteristics (accuracy and drift). The proposed design accounts for a minimum mass applicable to the space instrumentation. For a one-inch aperture, the mass is 0.12 kg. The expected accuracy of the instrument calibrated with the designed blackbody is estimated.

Item URL in elib:https://elib.dlr.de/131898/
Document Type:Conference or Workshop Item (Speech)
Title:Compact calibration source for thermal infrared Fourier-transform spectrometer
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Shakun, A.Space Research Institute of Russian Academy of Scienses, Moscow, RussiaUNSPECIFIED
Martynovich, F.Space Research Institute of Russian Academy of Scienses, Moscow, RussiaUNSPECIFIED
Ignatiev, N.IKIUNSPECIFIED
Maturilli, AlessandroAlessandro.Maturilli (at) dlr.dehttps://orcid.org/0000-0003-4613-9799
Santos-Skripko, AleksandrIKIUNSPECIFIED
Savosin, VladimirIKIUNSPECIFIED
Stupin, IgorIKIUNSPECIFIED
Arnold, GabrieleGabriele.Arnold (at) dlr.deUNSPECIFIED
Grigoriev, A.Space Research Institute of Russian Academy of Scienses, Moscow, RussiaUNSPECIFIED
Korablev, O.Space Research Institute, Moscow, RussiaUNSPECIFIED
Date:1 September 2019
Journal or Publication Title:Proceedings of SPIE - The International Society for Optical Engineering
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Volume:11128
DOI :10.1117/12.2528692
Page Range:p. 1112803
Series Name:Proceedings of SPIE - The International Society for Optical Engineering
Status:Published
Keywords:Mars, Spectroscopy
Event Title:Infrared Remote Sensing and Instrumentation XXVII 2019
Event Location:San Diego, USA
Event Type:international Conference
Event Dates:11.-15. Aug. 2019
Organizer:SPIE
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):Projekt BepiColombo MERTIS und BELA
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Leitungsbereich PF
Deposited By: Maturilli, Dr. Alessandro
Deposited On:02 Dec 2019 13:30
Last Modified:24 Mar 2020 15:34

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