Computer Science – Performance
Scientific paper
Dec 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998spie.3498..305l&link_type=abstract
Proc. SPIE Vol. 3498, p. 305-310, Sensors, Systems, and Next-Generation Satellites II, Hiroyuki Fujisada; Ed.
Computer Science
Performance
Scientific paper
Recently a new class of instruments, that uses a detector array to measure spectra for multiple points on the ground, has become available. These instruments build up an image by a pushbroom technique. The realization of the maximum potential of these Array Imaging Spectrometers is dependent on the ability to correct pixel to pixel variations in gain, bias, dark current and linearity of the detector array. Residual calibration striping in each band along the temporal axis, is usually the limiting noise source in these sensors, not photon or system electronic noise. Indeed, performance calculations or measurements which do not take this important noise source into account seriously overestimate the performance of Array Imaging Spectrometers. In this paper, the calibration requirements for Array Imaging Spectrometers, in general, and the procedure used to calibrate the Airborne Hyperspectral Imager (AHI) will be discussed. Examples from the Airborne-Hyperspectral Imager (AHI) will be used to illustrate the residual error and characterize its effect.
Lucey Paul G.
Winter Edwin M.
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