Fast Line-of-sight Atmospheric Analysis of Hypercubes

The Fast Line-of-sight Atmospheric Analysis of Spectral Hypercubes (FLAASH) atmospheric correction algorithm/code is a software package developed by the Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB and Spectral Sciences, Inc. to support the analyses of visible to shortwave infrared hyperspectral and multispectral imaging sensors.

Reference: Status of atmospheric correction using a MODTRAN4-based algorithm