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Calibration of the HP³ Radiometer on InSight

Mueller, N.T. and Knollenberg, Jörg and Grott, M. and Kopp, E. and Walter, I. and Krause, C. and Hudson, T.L. and Spohn, T. and Smrekar, S. (2020) Calibration of the HP³ Radiometer on InSight. Earth and Space Science, 7 (5), e01086. American Geophysical Union (AGU). doi: 10.1029/2020EA001086. ISSN 2333-5084.

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Official URL: https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020EA001086


The Heatflow and Physical Properties Package (HP³) radiometer is currently operating on Mars, observing two spots approximately 1 and 3 m north‐north‐west of the InSight lander. The instrument has primary sensors that are sensitive in the range of 8 to 14 µm and two more sensors with more narrow spectral ranges per field of view. The radiometer underwent radiometric and geometric calibration at DLR-Berlin; and on Mars radiometric self‐calibration is performed regularly. The self‐calibration confirms that one of the two primary sensors has been stable since the ground calibration, but environmental parameters that are likely associated with the thermal contact of sensor and instrument main body may have slightly changed. The other primary sensor has increased in sensitivity for an unknown reason but is still within expectation from the sensor design. The uncertainty of the two primary sensors is approximately 3 K at night, with somewhat larger errors in the late afternoon. This estimate includes the effect of sensitivity changes that would be too small to be reliably detected by the self-calibration.

Item URL in elib:https://elib.dlr.de/136912/
Document Type:Article
Title:Calibration of the HP³ Radiometer on InSight
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Mueller, N.T.nils.mueller (at) dlr.dehttps://orcid.org/0000-0001-9229-8921
Knollenberg, JörgJoerg.Knollenberg (at) dlr.dehttps://orcid.org/0000-0003-1249-8582
Grott, M.matthias.grott (at) dlr.dehttps://orcid.org/0000-0002-8613-7096
Kopp, E.Emanuel.Kopp (at) dlr.deUNSPECIFIED
Walter, I.ingo.walter (at) dlr.deUNSPECIFIED
Krause, C.christian.krause (at) dlr.deUNSPECIFIED
Hudson, T.L.Jet Propulsion Laboratory, California Institute of Technology, Pasadena, USAUNSPECIFIED
Spohn, T.Tilman.Spohn (at) dlr.dehttps://orcid.org/0000-0002-9322-6660
Smrekar, S.Jet Propulsion Laboratory, California Institute of Technology, Pasadena, USAUNSPECIFIED
Date:March 2020
Journal or Publication Title:Earth and Space Science
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
DOI :10.1029/2020EA001086
Page Range:e01086
Publisher:American Geophysical Union (AGU)
Keywords:thermal infrared radiometer, calibration, Mars surface temperature
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Space Exploration
DLR - Research theme (Project):R - Project InSight - HP3
Location: Berlin-Adlershof , Köln-Porz
Institutes and Institutions:Institute of Planetary Research > Planetary Physics
Institute of Optical Sensor Systems > Space Instruments
Space Operations and Astronaut Training > User center for space experiments (MUSC)
Deposited By: Müller, Nils
Deposited On:27 Oct 2020 08:04
Last Modified:27 Oct 2020 08:04

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