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Photometric functions for photoclinometry and other applicationsThe simpler Minnaert and lunar-Lambert functions, which are needed to reduce the number of unknown parameters in photoclinometry, are presently given least-squares fits to the brightness profiles across a disk, or 'limb darkening', described by Hapke's photometric function. The variation of limb darkening with single-scattering albedo and the particle-phase function's asymmetry factor are reduced of eliminated when the Hapke parameters are in the range representative of most planetary surfaces, thereby simplifying the problem of photoclinometry across terrains with variable surface materials.
Document ID
19910063812
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Mcewen, Alfred S.
(USGS Flagstaff, AZ, United States)
Date Acquired
August 14, 2013
Publication Date
August 1, 1991
Publication Information
Publication: Icarus
Volume: 92
ISSN: 0019-1035
Subject Category
Lunar And Planetary Exploration
Accession Number
91A48435
Funding Number(s)
CONTRACT_GRANT: NASA ORDER W-13709
Distribution Limits
Public
Copyright
Other

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