Wavelength calibration and instrument line shape estimation of a LWIR hyperspectral sensor from in-scene data

Robert D. Kaiser

doi:10.1117/12.410350

23 August 2000 Wavelength calibration and instrument line shape estimation of a LWIR hyperspectral sensor from in-scene data

Robert D. Kaiser

Author Affiliations +

Proceedings Volume 4049, Algorithms for Multispectral, Hyperspectral, and Ultraspectral Imagery VI; (2000) https://doi.org/10.1117/12.410350
Event: AeroSense 2000, 2000, Orlando, FL, United States

Abstract

Estimates have been made of wavelength calibration and instrument line shape (ILS) for the SEBASS hyperspectral sensor. FASCODE estimates of at-sensor radiance were made, convolved with gaussian or triangular ILS functions of various widths, had slight wavelength shifts introduced and were downsampled to SEBASS wavelengths. The downsampled FASCODE estimates were compared to measured data for 21 atmospheric absorption features between 8-13 um. The combination of ILS width and wavelength shift providing the best match was recorded. The technique was sensitive to wavelength calibration, but relatively insensitive to ILS width. Results demonstrated that SEBASS wavelength calibration was within +/- 0.5 channel widths.

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Robert D. Kaiser "Wavelength calibration and instrument line shape estimation of a LWIR hyperspectral sensor from in-scene data", Proc. SPIE 4049, Algorithms for Multispectral, Hyperspectral, and Ultraspectral Imagery VI, (23 August 2000); https://doi.org/10.1117/12.410350

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