A new lunar digital elevation model from the Lunar Orbiter Laser Altimeter and SELENE Terrain Camera
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Author(s)
Barker, M.K.
Neumann, G.A.
Haruyama, J.
Mazarico, Erwan Matias
Zuber, Maria
Smith, David Edmund
Date Issued
August 2015
Journal
Icarus
Publisher
Elsevier BV
Citation
Barker, M.K., E. Mazarico, G.A. Neumann, M.T. Zuber, J. Haruyama, and D.E. Smith. “A New Lunar Digital Elevation Model from the Lunar Orbiter Laser Altimeter and SELENE Terrain Camera.” Icarus 273 (July 2016): 346–355.
Version
Final published version
Abstract
We present an improved lunar digital elevation model (DEM) covering latitudes within ±60°, at a horizontal resolution of 512 pixels per degree (~60 m at the equator) and a typical vertical accuracy ~3 to 4 m. This DEM is constructed from ~4.5×109geodetically-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°×1°) from the SELENE Terrain Camera (TC) (~1010pixels 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 ~ 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.
MIT Department
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
Terms of Use
Creative Commons Attribution-NonCommercial-NoDerivs License
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DOI of Published Version
https://doi.org/10.1016/J.ICARUS.2015.07.039
