Performance characterization and calibration of the TRWIS III hyperspectral imager

Mark A. Folkman; Darrell A. Gleichauf; Charles T. Willoughby; Sveinn Thordarson; Bill H. Quon

doi:10.1117/12.258060

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13 November 1996 Performance characterization and calibration of the TRWIS III hyperspectral imager

Mark A. Folkman, Darrell A. Gleichauf, Charles T. Willoughby, Sveinn Thordarson, Bill H. Quon

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Proceedings Volume 2819, Imaging Spectrometry II; (1996) https://doi.org/10.1117/12.258060
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

The tremendous potential for hyperspectral imagery as a remote sensing tool has driven the development of TRW's TRWIS III hyperspectral imager. This instrument provides 384 contiguous spectral channels at 5 nm to 6.25 nm spectral resolution covering the 400 nm to 2450 nm wavelength range. The spectra of each pixel in the scene are gathered simultaneously at signal to noise ratios of several hundred to one for typical Earth scenes. Designed to fly on a wide range of aircraft and with variable frame rate, eh ground resolution can be varied from approximately 30 cm to 11 m depending on the aircraft altitude. Meeting critical performance requirements for image quality, co-registration of spectral samples, spectral calibration, noise, and radiometric accuracy are important to the success of the instrument. TRWIS III performance has been validated and the instrument has been radiometrically calibrated using TRW's multispectral test bed. This paper discusses the characterization and calibration process, results of the measurements, and instrument artifacts of potential interest to data users.

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Mark A. Folkman, Darrell A. Gleichauf, Charles T. Willoughby, Sveinn Thordarson, and Bill H. Quon "Performance characterization and calibration of the TRWIS III hyperspectral imager", Proc. SPIE 2819, Imaging Spectrometry II, (13 November 1996); https://doi.org/10.1117/12.258060

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