Open AccessA photometric function for analysis of lunar images in the visual and infrared based on Moon Mineralogy Mapper observations
Author(s) -
Hicks M. D.,
Buratti B. J.,
Nettles J.,
Staid M.,
Sunshine J.,
Pieters C. M.,
Besse S.,
Boardman J.
Publication year - 2011
Publication title -
journal of geophysical research: planets
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.67
H-Index - 298
eISSN - 2156-2202
pISSN - 0148-0227
DOI - 10.1029/2010je003733
Subject(s) - radiance , remote sensing , optics , terrain , calibration , geology , wavelength , phase angle (astronomy) , thematic mapper , infrared , physics , satellite imagery , biology , ecology , quantum mechanics
Changes in observed photometric intensity on a planetary surface are caused by variations in local viewing geometry defined by the radiance incidence, emission, and solar phase angle coupled with a wavelength‐dependent surface phase function f ( α , λ ) which is specific for a given terrain. In this paper we provide preliminary empirical models, based on data acquired inflight, which enable the correction of Moon Mineralogy Mapper (M 3 ) spectral images to a standard geometry with the effects of viewing geometry removed. Over the solar phase angle range for which the M 3 data were acquired our models are accurate to a few percent, particularly where thermal emission is not significant. Our models are expected to improve as additional refinements to the calibrations occur, including improvements to the flatfield calibration; improved scattered and stray light corrections; improved thermal model corrections; and the computation of more accurate local incident and emission angles based on surface topography.