Radiometric calibration of the airborne imaging spectrometer

Several laboratory calibration tests were developed for the Airborne Imaging Spectrometer (AIS). The goals of these tests are to adjust the physical alignment of the detector within the optical system and set the spectral endpoints, and produce a calibration file of multipliers which equalizes the relative responses of each of the detector elements in the entire two-dimensional array. Tests are also performed as part of an ongoing effort to provide absolute radiometric calibration. The tests are described and the merits and limitations of each are discussed.