Bidirectional Surface Reflection Modeled Using Microscopic Roughness

Details Bidirectional Surface Reflection Modeled Using Microscopic Roughness Bidirectional Surface Reflection Modeled Using Microscopic Roughness

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996lpi....27..319d&link_type=abstract

Lunar and Planetary Science, volume 27, page 319

Computer Science

Photometry, Remote Sensing

Scientific paper

Photometry and spectroscopy are fundamental to remote sensing of planetary surfaces. A photometric model based upon radiative transfer theory has come into wide use for analyzing measured spectral reflectances to infer scattering properties of particulate surfaces, compositions of surface materials, and textural parameters. This photometric model included effects of microscopic extinction shadow hiding and multiple scattering. The model disagreed significantly with observation only in that it predicted a sharp brightening near the poles and illuminated limb of low albedo bodies. To remove this so-called "limb brightening" effect from the model, Hapke introduced a macroscopic roughness correction, involving the surface tilt parameter theta that accounted for macroscopic slopes and shadowing on the surface of the body, without attempting to model the surface structure in detail.

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