TY - RPRT TI - Spectral Dark Subtraction: A MODTRAN-Based Algorithm for Estimating Ground Reflectance without Atmospheric Information AU - Freedman, Ellis AU - Ryan, Robert AU - Pagnutti, Mary AU - Holekamp, Kara AU - Gasser, Gerald AU - Carver, David AU - Greer, Randy PY - 2007 UR - https://ntrs.nasa.gov/citations/20070038216 ID - 20070038216 ER -