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A New Lunar Digital Elevation Model from the Lunar Orbiter Laser Altimeter and SELENE Terrain CameraWe present an improved lunar digital elevation model (DEM) covering latitudes within +/-60 deg, at a horizontal resolution of 512 pixels per degree ( approx.60 m at the equator) and a typical vertical accuracy approx.3 to 4 m. This DEM is constructed from approx.4.5 ×10(exp 9) geodetically-accurate topographic heights from the Lunar Orbiter Laser Altimeter (LOLA) onboard the Lunar Reconnaissance Orbiter, to which we co-registered 43,200 stereo-derived DEMs (each 1 deg×1 deg) from the SELENE Terrain Camera (TC) ( approx.10(exp 10) pixels total). After co-registration, approximately 90% of the TC DEMs show root-mean-square vertical residuals with the LOLA data of < 5 m compared to approx.50% prior to co-registration. We use the co-registered TC data to estimate and correct orbital and pointing geolocation errors from the LOLA altimetric profiles (typically amounting to < 10 m horizontally and < 1 m vertically). By combining both co-registered datasets, we obtain a near-global DEM with high geodetic accuracy, and without the need for surface interpolation. We evaluate the resulting LOLA + TC merged DEM (designated as "SLDEM2015") with particular attention to quantifying seams and crossover errors.
Document ID
20170002253
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Barker, M. K.
(Sigma Space Corp. Lanham, MD, United States)
Mazarico, E.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Neumann, G. A.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Zuber, M. T.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Haruyama, J.
(Tokyo Univ. Japan)
Smith, D. E.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Date Acquired
March 14, 2017
Publication Date
August 8, 2015
Publication Information
Publication: ICARUS
Publisher: Science Direct
Volume: 273
e-ISSN: 1090-2643
Subject Category
Instrumentation And Photography
Lunar And Planetary Science And Exploration
Report/Patent Number
GSFC-E-DAA-TN39939
Funding Number(s)
CONTRACT_GRANT: NNG15HZ37C
CONTRACT_GRANT: NNA14AB01A
Distribution Limits
Public
Copyright
Other

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