S
S. D. Wall
Researcher at Langley Research Center
Publications - 8
Citations - 348
S. D. Wall is an academic researcher from Langley Research Center. The author has contributed to research in topics: Mars Exploration Program & Martian surface. The author has an hindex of 7, co-authored 8 publications receiving 339 citations.
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Journal ArticleDOI
One Mars year: viking lander imaging observations.
Kenneth L. Jones,Raymond E. Arvidson,Edward A. Guinness,Susan L. Bragg,S. D. Wall,Carl E. Carlston,Deborah G. Pidek +6 more
TL;DR: Surface condensates formed at the Viking 2 lander site during the winter and additional observations suggest that surface erosion rates due to dust redistribution may be substantially less than those predicted on the basis of pre-Viking observations.
Journal ArticleDOI
The surface of Mars - The view from the Viking 2 lander
Thomas A. Mutch,S. U. Grenander,K. L. Jones,William R. Patterson,Raymond E. Arvidson,Edward A. Guinness,P. Avrin,C. E. Carlston,Alan B. Binder,Carl Sagan,E. W. Dunham,Paul Fox,David C. Pieri,Friedrich O. Huck,C. W. Rowland,Glenn R. Taylor,S. D. Wall,Ralph A. Kahn,Elliott C. Levinthal,Sidney Liebes,R. B. Tucker,E. C. Morris,James B. Pollack,R. S. Saunders,M. R. Wolf +24 more
TL;DR: Viking 2 lander began imaging the surface of Mars at Utopia Planitia on 3 September 1976 as discussed by the authors, where the surface is a boulder-strewn reddish desert cut by troughs that probably form a polygonal network.
Journal ArticleDOI
Spectrophotometric and color estimates of the Viking Lander sites
Friedrich O. Huck,Daniel J. Jobson,Stephen K. Park,S. D. Wall,Raymond E. Arvidson,William R. Patterson,William D. Benton +6 more
TL;DR: The spectral radiance and color of the Martian sky and soil and the spectral reflectance of soil features are estimated from six-channel (0.4-1.0 micron) spectral data obtained with the Viking lander cameras.
Journal ArticleDOI
Calibration and performance of the Viking Lander cameras
TL;DR: In this article, the effects of sampling on the achievable photogrammetric precision are described along with techniques for preflight spectral calibrations and the corrections required for degradation in the infrared response of the detectors.
Journal ArticleDOI
Photosensor aperture shaping to reduce aliasing in optical-mechanical line-scan imaging systems.
TL;DR: Photosensor aperture shaping and line-scan spacing are investigated as a means for reducing the impact of aliasing on the spatial detail of the reconstructed image.