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Mars Orbiter Laser Altimeter pulse width measurements and footprint-scale roughness

Neumann, G. A. and Abshire, J. B. and Aharonson, O. and Garvin, J. B. and Sun, X. and Zuber, M. T. (2003) Mars Orbiter Laser Altimeter pulse width measurements and footprint-scale roughness. Geophysical Research Letters, 30 (11). Art. No. 1561. ISSN 0094-8276. doi:10.1029/2003GL017048.

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The Mars Orbiter Laser Altimeter (MOLA) measured the pulse width and energy of altimetric laser returns during the course of two Mars years of operations. As secondary science objectives, MOLA obtains the footprint-scale roughness and the bidirectional reflectivity of Mars. MOLA underwent extensive preflight calibration and pulse measurements were monitored continuously in flight, but anomalous values of roughness have been inferred. A calibration of pulse widths using inflight data yields a slope-corrected roughness over ∼75-m-diameter footprints that may be used for quantitative geomorphic surface characterization, required, for example, for landing site selection. The recalibration uses a total least-squares estimation of pulse characteristics that generalizes the method of Abshire et al. [2000]. This method, utilizing the timing at voltage threshold crossings and the area between crossings, accounts for observation errors and shows that surface roughness as small as 1 m can be resolved.

Item Type:Article
Related URLs:
URLURL TypeDescription
Neumann, G. A.0000-0003-0644-9944
Aharonson, O.0000-0001-9930-2495
Garvin, J. B.0000-0003-1606-5645
Sun, X.0000-0001-6172-9995
Zuber, M. T.0000-0003-2652-8017
Additional Information:© 2003 by the American Geophysical Union. Received 3 February 2003; revised 12 March 2003; accepted 25 March 2003; published 5 June 2003. The MOLA investigation is supported by the NASA Mars Exploration Program. Constructive and thorough reviews by F.S. Anderson and N. Bridges improved the manuscript.
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Subject Keywords: Planetary Sciences: Instruments and techniques; Planetary Sciences: Remote sensing; Planetary Sciences: Surface materials and properties
Issue or Number:11
Record Number:CaltechAUTHORS:20130226-083820102
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Official Citation:Neumann, G. A., J. B. Abshire, O. Aharonson, J. B. Garvin, X. Sun, and M. T. Zuber (2003), Mars Orbiter Laser Altimeter pulse width measurements and footprint-scale roughness, Geophys. Res. Lett., 30, 1561, doi:10.1029/2003GL017048
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:37129
Deposited By: Tony Diaz
Deposited On:26 Feb 2013 20:42
Last Modified:07 Mar 2023 23:09

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