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Relating Hyperspectral Airborne Data to Ground Measurements in a Complex and Discontinuous Canopy

Calleja J. F., Hellmann Ch., Mendiguren G., Punalekar S., Peón J., MacArthur A., Alonso L.

Acta Geophysica

2015

Vol. 63, no. 6

1499--1515

The work described in this paper is aimed at validating hyperspectral airborne reflectance data collected during the Regional Experiments For Land-atmosphere EXchanges (REFLEX) campaign. Ground reflectance data measured in a vineyard were compared with airborne reflectance data. A sampling strategy and subsequent ground data processing had to be devised so as to capture a representative spectral sample of this complex crop. A linear model between airborne and ground data was tried and statistically tested. Results reveal a sound correspondence between ground and airborne reflectance data (R2 > 0.97), validating the atmospheric correction of the latter.