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The Venus Emissivity Mapper (VEM): advanced development status and performance evaluation

Helbert, Jörn and Säuberlich, Thomas and Dyar, Melinda and Ryan, Conor and Walter, Ingo and Reess, Jean-Michel and Rosas-Ortiz, Yaquelin and Peter, Gisbert and Maturilli, Alessandro and Arnold, Gabriele (2020) The Venus Emissivity Mapper (VEM): advanced development status and performance evaluation. In: Infrared Remote Sensing and Instrumentation XXVIII 2020, 11502, p. 6. SPIE. Infrared Remote Sensing and Instrumentation XXVIII, 2020-08-24 - 2020-09-04, San Diego, USA. doi: 10.1117/12.2567634. ISBN 978-1-5106-3811-2. ISSN 0277-786X.

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Official URL: https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11502/2567634/The-Venus-Emissivity-Mapper-VEM--advanced-development-status-and/10.1117/12.2567634.full?SSO=1


The Venus Emissivity Mapper (VEM) has a mature design with an existing laboratory prototype verifying an achievable instrument SNR of well above 1000 as well as a predicted error in the retrieval of relative emissivity of better than 1%. VEM will provide a global map of surface composition as well as redox state of the surface by observing the surface with six narrow band filters, ranging from 0.86 to 1.18 μm. Continuous observation of Venus’ thermal emission will place tight constraints on current day volcanic activity. Eight additional channels provide measurements of atmospheric water vapor abundance as well as cloud microphysics and dynamics and permit accurate correction of atmospheric interference on the surface data. A mission combining VEM with a high-resolution radar mapper such as the ESA EnVision or NASA VERITAS mission proposals will provide key insights in the divergent evolution of Venus. Here we discuss the approach and results of the evaluation of the VEM sensor’s radiometric performance by an analysis of the corresponding signal processing chain. The passage of a simulated radiometric scene signal of the planet Venus through the VEM optics, detector, analog and digital electronics has been evaluated based on a theoretical model of the system. The goal was to verify the overall system performance with respect to the scientific requirements. This is building on our preliminary evaluation of the VEM laboratory prototype and confirms that the VEM design has significant performance margins.

Item URL in elib:https://elib.dlr.de/138727/
Document Type:Conference or Workshop Item (Speech)
Title:The Venus Emissivity Mapper (VEM): advanced development status and performance evaluation
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Helbert, JörnUNSPECIFIEDhttps://orcid.org/0000-0001-5346-9505UNSPECIFIED
Dyar, MelindaPlanetary Science Institute, Tucson, AZ, USAUNSPECIFIEDUNSPECIFIED
Ryan, ConorDLR, Institut für Optische SensorsystemeUNSPECIFIEDUNSPECIFIED
Reess, Jean-MichelObservatoire de Paris-Meudon, FranceUNSPECIFIEDUNSPECIFIED
Peter, GisbertUNSPECIFIEDhttps://orcid.org/0000-0001-6101-2513UNSPECIFIED
Maturilli, AlessandroUNSPECIFIEDhttps://orcid.org/0000-0003-4613-9799UNSPECIFIED
Journal or Publication Title:Infrared Remote Sensing and Instrumentation XXVIII 2020
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:p. 6
Series Name:Proceedings of SPIE
Keywords:Venus, Spektroskopie, Infrarot, Mineralogie, Geochemie
Event Title:Infrared Remote Sensing and Instrumentation XXVIII
Event Location:San Diego, USA
Event Type:international Conference
Event Start Date:24 August 2020
Event End Date:4 September 2020
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 - Venus Emissivity Mapper
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Planetary Laboratories
Institute of Planetary Research > Leitungsbereich PF
Institute of Planetary Research > Planetary Sensor Systems
Institute of Optical Sensor Systems > Space Instruments
Deposited By: Helbert, Dr.rer.nat. Jörn
Deposited On:01 Dec 2020 11:08
Last Modified:10 Jun 2024 12:49

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