Atmospheric correction of multi-angle CRISM/MRO hyperspectral data: Retrieval of aerosol optical thickness and surface reflectance

Multi-angle imaging spectroscopy of Mars is made possible by the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM). The angular coverage of CRISM is intended to provide reliable information of the atmosphere to carry out accurate atmospheric correction in comparison with the techniques applied on conventional hyperspectral imagery. In this paper we propose two methods that benefit from the angular dimension of the hyperspectral data acquired by CRISM: (i) a method to estimate the aerosol optical thickness of the atmosphere of Mars, and (ii) an inversion algorithm to retrieve surface properties from top-of-atmosphere data.