Joint lab, field and airborne spectral database for the quantification of soil hydrocarbon content

Soil-hydrocarbon mixtures give complex spectral responses. This has prohibited any physical modelling until now. Spectral analysis and quantification of contamination rate has been performed by regression models, calibrated on spectral databases. Only lab or field databases have been used. This study proposes an innovative joint lab-field-airborne spectral database in the reflective domain (0.4–2.5/xm) to assess the performance of regression models on airborne images of soil-hydrocarbon mixtures. Sample preparation and spectral measurements are described. Implied instruments are an ASD FieldSpec Pro 2 spectrometer and the HySpex hyperspectral camera. Accordance between ground truth and airborne data is shown. Several raw outdoor spectra are displayed.

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