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VERITAS (Venus Emissivity, Radio Science, InSAR, Topography, and Spectroscopy): A Discovery Mission

Smrekar, Sue and Hensley, Scott and Nybakken, Rick and Wallace, Mark S. and Perkovic-Martin, Dragana and You, Tung-Han and Nunes, Daniel and Brophy, John and Ely, Todd and Burt, Eric and Dyar, Darby and Helbert, Jörn and Miller, Barry and Hartley, Jonathan and Kallemeyn, Piet and Whitten, Jennifer and Iess, Luciano and Mastrogiuseppe, Marco and Younis, Marwan and Prats, Pau and Rodriguez Cassola, Marc and Mazarico, Erwan (2022) VERITAS (Venus Emissivity, Radio Science, InSAR, Topography, and Spectroscopy): A Discovery Mission. In: 2022 IEEE Aerospace Conference, AERO 2022, pp. 1-20. IEEE Aerospace Conference, 2022-03-05 - 2022-03-12, USA. doi: 10.1109/AERO53065.2022.9843269. ISBN 978-166543760-8. ISSN 1095-323X.

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Deep understanding of planetary habitability requires identifying key factors that govern the surface environment over time. Venus is the ultimate control case for understanding how Earth developed and maintained conditions suited to life. Venus very likely had elements essential to habitability such as past surface water and a dynamo. Tectonism and volcanism, which create chemical disequilibrium, very likely persist today. What caused Earth and Venus to diverge down different evolutionary paths? VERITAS would create foundational, co-registered data sets of high-resolution topography, imaging, spectroscopy, and gravity, on par with those available for Mercury, Mars, and the Moon. VERITAS would answer outstanding fundamental questions about the evolution of Earth's twin. The VERITAS payload consists of the Venus Interferometric Synthetic Aperture Radar (VISAR) and the Venus Emissivity Mapper (VEM), plus a gravity science investigation. VISAR is an X-band radar that provides: 1) a global digital elevation model (DEM) with 250-m postings and 6-m height accuracy, 2) Synthetic aperture radar (SAR) imaging at 30-m horizontal resolution globally, 3) SAR imaging at 15-m resolution for $> \boldsymbol{25\%}$ of the surface, and 4) surface deformation from repeat pass interferometry (RPI) with 2-cm vertical precision for $> \boldsymbol{12} \boldsymbol{(\sim 200\ \mathrm{x}\ 200\ \text{km})}$ targeted areas. VEM covers $\boldsymbol{ > 70\%}$ of the surface in six near-infrared (NIR) bands sensitive to iron composition located within five atmospheric windows, plus eight atmospheric bands for calibration and water vapor measurements. VEM would provide near-global maps of mafic to felsic rock type and will search for active and recent volcanism. VERITAS would use two-way Ka-band uplink and downlink from a low circular orbit $\boldsymbol{(< 250\ \text{km})}$ to create a global gravity field with 3-mGal accuracy of 155-km resolution (degree and order 123). An onboard technology demonstration, the Deep Space Atomic Clock (DSAC-2), may support radio science and navigation with one-way tracking. VERITAS data would enable estimation of elastic thickness (a proxy for thermal gradient) and density differences due to subsurface structures, as well as constraining interior structure, including core size and state. Lockheed Martin builds the spacecraft. VISAR is built by JPL, with the Italian Space Agency (ASI) providing the low power electronics. ASI also provides transponders and a high gain antenna for the telecom system. CNES provides the Ka-band traveling wave tube amplifiers (TWTA). The German Space Agency (DLR) provides VEM and contributes algorithms for VISAR ground and onboard data processing.

Item URL in elib:https://elib.dlr.de/191008/
Document Type:Conference or Workshop Item (Speech)
Title:VERITAS (Venus Emissivity, Radio Science, InSAR, Topography, and Spectroscopy): A Discovery Mission
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Smrekar, SueJet Propulsion Laboratory, California Institute of Technology, PasadenaUNSPECIFIEDUNSPECIFIED
Hensley, ScottJet Propulsion Laboratory Pasadena, USAUNSPECIFIEDUNSPECIFIED
Nybakken, RickJet Propulsion Laboratory Pasadena, USUNSPECIFIEDUNSPECIFIED
Wallace, Mark S.Jet Propulsion Laboratory PasadenaUNSPECIFIEDUNSPECIFIED
Perkovic-Martin, DraganaJet Propulsion Laboratory PasadenaUNSPECIFIEDUNSPECIFIED
You, Tung-HanJet Propulsion Laboratory PasadenaUNSPECIFIEDUNSPECIFIED
Nunes, DanielJet Propulsion Laboratory Pasadena, USAUNSPECIFIEDUNSPECIFIED
Brophy, JohnJet Propulsion Laboratory PasadenaUNSPECIFIEDUNSPECIFIED
Ely, ToddJet Propulsion Laboratory PasadenaUNSPECIFIEDUNSPECIFIED
Burt, EricJet Propulsion Laboratory PasadenaUNSPECIFIEDUNSPECIFIED
Dyar, DarbyPlanetary Science Institute, Tucson, AZ, USAUNSPECIFIEDUNSPECIFIED
Helbert, JörnUNSPECIFIEDhttps://orcid.org/0000-0001-5346-9505UNSPECIFIED
Miller, BarryLockheed Martin SpaceUNSPECIFIEDUNSPECIFIED
Hartley, JonathanLockheed Martin SpaceUNSPECIFIEDUNSPECIFIED
Kallemeyn, PietLockheed Martin SpaceUNSPECIFIEDUNSPECIFIED
Whitten, JenniferTulane UniversityUNSPECIFIEDUNSPECIFIED
Iess, LucianoDepartment of Engineering, Sapienza University of Rome,UNSPECIFIEDUNSPECIFIED
Mastrogiuseppe, MarcoU. Roma La Sapienza, ItalyUNSPECIFIEDUNSPECIFIED
Younis, MarwanUNSPECIFIEDhttps://orcid.org/0000-0002-8563-7371UNSPECIFIED
Prats, PauUNSPECIFIEDhttps://orcid.org/0000-0002-7583-2309UNSPECIFIED
Date:March 2022
Journal or Publication Title:2022 IEEE Aerospace Conference, AERO 2022
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 1-20
Event Title:IEEE Aerospace Conference
Event Location:USA
Event Type:international Conference
Event Dates:2022-03-05 - 2022-03-12
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 VERITAS- VISAR (HR)
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute
Deposited By: Younis, Dr.-Ing. Marwan
Deposited On:28 Nov 2022 13:43
Last Modified:11 Jan 2023 18:50

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