Computer Science – Databases
Scientific paper
Jan 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999misp.conf...45h&link_type=abstract
Workshop on Mars 2001: Integrated Science in Preparation for Sample Return and Human Exploration, p. 45
Computer Science
Databases
Landing Sites, Rocks, Topography, Mars (Planet), Mars Surface, Mars Environment, Mars Pathfinder, Remote Sensing, Mars Landing, Surface Roughness
Scientific paper
Several rock counts have been carried out at the Mars Pathfinder landing site producing consistent statistics of rock coverage and size-frequency distributions. These rock statistics provide a primary element of "ground truth" for anchoring remote sensing information used to pick the Pathfinder, and future, landing sites. The observed rock population statistics should also be consistent with the emplacement and alteration processes postulated to govern the landing site landscape. The rock population databases can however be used in ways that go beyond the calculation of cumulative number and cumulative area distributions versus rock diameter and height. Since the spatial parameters measured to characterize each rock are determined with stereo image pairs, the rock database serves as a subset of the full landing site digital terrain model (DTM). Insofar as a rock count can be carried out in a speedier, albeit coarser, manner than the full DTM analysis, rock counting offers several operational and scientific products in the near term. Quantitative rock mapping adds further information to the geomorphic study of the landing site, and can also be used for rover traverse planning. Statistical analysis of the surface roughness using the rock count proxy DTM is sufficiently accurate when compared to the full DTM to compare with radar remote sensing roughness measures, and with rover traverse profiles.
Anderson Robert C.
Bridges Nathan T.
Golombek Matthew P.
Haldemann Albert F. C.
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