Mathematics – Logic
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufm.p62b..01s&link_type=abstract
American Geophysical Union, Fall Meeting 2002, abstract #P62B-01
Mathematics
Logic
5464 Remote Sensing, 5470 Surface Materials And Properties
Scientific paper
In order to maximize the remote sensing return from airborne or space based observations of the Earth and terrestrial planets, the foundations of our conceptions must be ruthlessly tested. The connections between space-based, ground-based, and laboratory studies all rely upon fundamental theories and models of the interaction between light and geologic surfaces. The most ubiquitous models are those developed by Hapke [Theory of Reflectance and Emittance Spectroscopy,1993; Icarus, 2002]. We conducted a blind test of the model using the Bloomsburg University Goniometer (B.U.G.) Laboratory [Shepard, LPSC abstract, 2001; see associated URL]. The first author selected and measured the spectro-photometric behavior of well characterized powder samples. The results of the measurements were sent in the blind to the second author who fit the data using the Hapke [1993, 2002] model and made quantitative and comparative estimates of the surface roughness, grain size, sample bulk porosity, and albedo. These estimates were compared with the known properties. A similar blind methodology is suggested for testing our abilities to extract meaningful data using terrestrial analog sites.
Helfenstein Paul
Shepard Michael K.
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