Stray light effects in above-water remote sensing reflectance from a class of hyperspectral radiometers.

Stray light perturbations are unwanted distortions of the measured spectrum due to the non-ideal performance of optical radiometers. Because of this, stray lights characterization and correction is essential when accurate radiometric measurements are a necessity. In agreement with such a need, this study focused on stray light correction of a class of hyperspectral radiometers widely applied for above-water measurements to determine the remote sensing reflectance (RRS). Stray light of sample radiometers was experimentally characterized and a correction algorithm was developed and applied to field measurements performed in the Mediterranean Sea. Results indicate that mean stray light corrections are appreciable, with values varying from -2% to +1% in the 400-700 nm spectral region for downward irradiance, total radiance from the sea and sky radiance. Mean corrections for data products such as the RRS exhibit values which depend on water type varying between -0.5 and 0.5% in the blue-green spectral region, but exceeding several percent in the red.

TALONE Marco;  ZIBORDI Giuseppe;  ANSKO Ilmar;  BANKS Andrew Clive;  KUUSK Joel; 

2016-12-06

OPTICAL SOC AMER

JRC97328

1559-128X,   

https://www.osapublishing.org/ao/abstract.cfm?URI=ao-55-15-3966,    https://publications.jrc.ec.europa.eu/repository/handle/JRC97328,   

10.1364/AO.55.003966,