Radiometric linearity in passive FTIR spectrometry

Robert T. Kroutil; Roger J. Combs; Robert B. Knapp

doi:10.1117/12.371301

23 November 1999 Radiometric linearity in passive FTIR spectrometry

Robert T. Kroutil, Roger J. Combs, Robert B. Knapp

Proceedings Volume 3856, Internal Standardization and Calibration Architectures for Chemical Sensors; (1999) https://doi.org/10.1117/12.371301
Event: Photonics East '99, 1999, Boston, MA, United States

Abstract

Passive standoff FTIR spectrometry relies on the radiance differential between a background scene and a target vapor analyte. Unlike traditional FTIR approaches controlling radiance levels within a narrow range, the passive configuration often encounters a large variance in radiance levels. This places higher demands on the passive FTIR configuration for maintaining linearity. The present study assesses the radiometric linearity of a passive FTIR configuration using controlled blackbody radiance in conjunction with target samples such as a polystyrene film and ethanol vapors.

Citation Download Citation

Robert T. Kroutil, Roger J. Combs, and Robert B. Knapp "Radiometric linearity in passive FTIR spectrometry", Proc. SPIE 3856, Internal Standardization and Calibration Architectures for Chemical Sensors, (23 November 1999); https://doi.org/10.1117/12.371301

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