Errors in laboratory measurements resulting from atmospheric absorption near 1380 nm

Paul R. Spyak; John Henry LaMarr; Kurtis J. Thome

doi:10.1117/12.278922

18 September 1997 Errors in laboratory measurements resulting from atmospheric absorption near 1380 nm

Paul R. Spyak, John Henry LaMarr, Kurtis J. Thome

Proceedings Volume 3117, Earth Observing Systems II; (1997) https://doi.org/10.1117/12.278922
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

Errors can occur in laboratory measurements when the response of a bandpass-filtered radiometer extends into an atmospheric absorption region. Atmospheric models, such as MODTRAN3, can be valuable tools that allow optical measurement in these regions to be accurately analyzed. Comparisons of MODTRAN3-predicted and laboratory-measured atmospheric transmittance have been made to help establish the validity of MODTRAN3 for use in modeling short-path length, low resolution, optical effects over the absorption band near 1380 nm. MODTRAN3-predicted transmittance is shown to be within 4 percent of the measured data and well within 2 percent foremost of the water band. The spectroradiometric measurement of the water-vapor absorption band, its description, and its comparison to the MODTRAN3 prediction are presented. Also presented are examples of errors that can occur when an instrument response extends into this region.

Citation Download Citation

Paul R. Spyak, John Henry LaMarr, and Kurtis J. Thome "Errors in laboratory measurements resulting from atmospheric absorption near 1380 nm", Proc. SPIE 3117, Earth Observing Systems II, (18 September 1997); https://doi.org/10.1117/12.278922

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