Passive standoff detection of surface contaminants: modeling the spectral radiance

Jean-Marc Theriault; James O. Jensen; Alan C. Samuels; Avishai Ben-David; Christopher M. Gittins; William J. Marinelli

doi:10.1117/12.455165

7 February 2002 Passive standoff detection of surface contaminants: modeling the spectral radiance

Jean-Marc Theriault, James O. Jensen, Alan C. Samuels, Avishai Ben-David, Christopher M. Gittins, William J. Marinelli

Proceedings Volume 4574, Instrumentation for Air Pollution and Global Atmospheric Monitoring; (2002) https://doi.org/10.1117/12.455165
Event: Environmental and Industrial Sensing, 2001, Boston, MA, United States

Abstract

An experimental and modeling study performed to estimate the spectral radiance of surface contaminants is presented. The goal of the study is to address issues relevant to the passive standoff detection of surface contaminants. For this experiment, SF96 and Krylon 41325 are used as contaminant simulants and the contamination of four different surfaces (aluminum, grass, soil and plywood) is analyzed. A first order model of reflectance for surface contaminants is proposed. Measurements of spectral radiance with the CATSI system is compared with the best-fit spectra derived from the model. The experimental results agree well with the model best fits for Krylon on aluminum and grass samples. For Krylon on soil and SF96 on plywood the model best fits fail to reproduce the experimental spectra. The reasons for this discrepancy is discussed.

Citation Download Citation

Jean-Marc Theriault, James O. Jensen, Alan C. Samuels, Avishai Ben-David, Christopher M. Gittins, and William J. Marinelli "Passive standoff detection of surface contaminants: modeling the spectral radiance", Proc. SPIE 4574, Instrumentation for Air Pollution and Global Atmospheric Monitoring, (7 February 2002); https://doi.org/10.1117/12.455165

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