Mathematics – Metric Geometry
Scientific paper
Mar 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996lpi....27..841m&link_type=abstract
Lunar and Planetary Science, volume 27, page 841
Mathematics
Metric Geometry
20
Albedo, Clementine, Galileo, Moon, Photometry
Scientific paper
The Clementine multispectral dataset will enable compositional mapping of the entire lunar surface at a resolution of ~100-200 m, but a highly accurate photometric normalization is needed to achieve challenging scientific objectives such as mapping petrographic or elemental compositions. The goal of this work is to normalize the Clementine data to an accuracy of 1% for the UVVIS images (0.415, 0.75, 0.9, 0.95, and 1.0 micrometers) and 2% for NIR images (1.1, 1.25, 1.5, 2.0, 2.6, and 2.78 micrometers), consistent with radiometric calibration goals. The data will be normalized to R30, the reflectance expected at an incidence angle (i) and phase angle (alpha) of 30 degrees and emission angle (e) of 0 degree, matching the photometric geometry of lunar samples measured at the reflectance laboratory (RELAB) at Brown University The focus here is on the precision of the normalization, not the putative physical significance of the photometric function parameters. The 2% precision achieved is significantly better than the ~10% precision of a previous normalization.
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