ALGORITHM FOR ATMOSPHERIC CORRECTIONS OF AIRCRAFT AND SATELLITE IMAGERY

An algorithm is described for making fast atmospheric corrections. The required radiation parameters are stored in a lookup table. The procedure is to enter the lookup table with the measured radiance, wavelength, view and illumination directions, heights of observation and surface, and the aerosol and gaseous absorption optical thicknesses. The surface radiance, the irradiance incident on a surface, and surface reflectance are computed then. Alternately, the program will compute the upward radiances at specific altitudes for a given surface reflectance, view and illumination directions, and aerosol and gaseous absorption optical thicknesses.