ISSN: 961-91393-0-5
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Modeling lunar reflectance spectra
Ye. Grynko
Astronomical Institute of Kharkov V.N. Karazin National University, 35 Sumskaya St., Kharkov, 61022, Ukraine
Yu. Shkuratov
Astronomical Institute of Kharkov V.N. Karazin National University, 35 Sumskaya St., Kharkov, 61022, Ukraine
Gorden Videen
Astronomical Institute "Anton Pannekoek", University of Amsterdam, Kruislaan 403, 1098 SJ Amsterdam, The Netherlands; Space Science Institute, 4750 Walnut St. Suite 205, Boulder CO 80301; U.S. Army Research Laboratory AMSRL-CI-EE, Adelphi, USA
ABSTRACT
We study the dependence of the reflectance spectra of regolith-like surfaces on the phase angle. A computer model based on the ray optics approximation is used. Our calculations reveal a strong non-monotonous dependence of the spectral slopes on the phase angle. Changing observation geometry also influences the depth of the absorption bands. We also calculate the phase angle distribution of the average path lengths <L> that rays pass through in the medium between the points of entrance and emergence.
pages 41-44
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