Following publications have been announced by our department Remote Sensing. For further information please contact the marked co-authors of the publications:
Kostakis, I., Röttgers, R., Orkney, A., Bouman, H.A., Porter, M., Cottier, F., Berge, J., & McKee, D. (2020): Development of a bio-optical model for the Barents Sea to quantitatively link glider and satellite observations. Phil. Trans. R. Soc. A.37820190367, doi:10.1098/rsta.2019.0367
A bio-optical model for the Barents Sea is determined from a set of in situ observations of inherent optical properties (IOPs) and associated biogeochemical analyses. The bio-optical model provides a pathway to convert commonly measured parameters from glider-borne sensors (CTD, optical triplet sensor—chlorophyll and CDOM fluorescence, backscattering coefficients) to bulk spectral IOPs (absorption, attenuation and backscattering). IOPs derived from glider observations are subsequently used to estimate remote sensing reflectance spectra that compare well with coincident satellite observations, providing independent validation of the general applicability of the bio-optical model. Various challenges in the generation of a robust bio-optical model involving dealing with partial and limited quantity datasets and the interpretation of data from the optical triplet sensor are discussed. Establishing this quantitative link between glider-borne and satellite-borne data sources is an important step in integrating these data streams and has wide applicability for current and future integrated autonomous observation systems.
Sticklus, J., Hoeher, P.A., & Hieronymi, M. (2020): Experimental Characterization of Single-Color Power LEDs Used as Photodetectors. Sensors 2020, 20(18), 5200, doi:10.3390/s20185200
Semiconductor-based light emitting diodes can be used for photon emission as well as for detection of photons. In this paper, we present a fair comparison between off-the-shelf power Light emitting diodes (LEDs) and a silicon photodetector with respect to their spectral, temporal, and spatial properties. The examined LED series features unexpected good sensitivity and distinct optical bandpass characteristic suitable for daylight filtering or color selectivity. Primary application is short range optical underwater communication, but results are generally applicable.