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Proceedings Paper

Requirements for calibration of focal plane arrays for imaging spectrometers
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Paper Abstract

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.

Paper Details

Date Published: 21 December 1998
PDF: 6 pages
Proc. SPIE 3498, Sensors, Systems, and Next-Generation Satellites II, (21 December 1998); doi: 10.1117/12.333644
Show Author Affiliations
Paul G. Lucey, Univ. of Hawaii/Manoa (United States)
Edwin M. Winter, Technical Research Associates, Inc. (United States)

Published in SPIE Proceedings Vol. 3498:
Sensors, Systems, and Next-Generation Satellites II
Hiroyuki Fujisada, Editor(s)

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