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Comparing fluorescent and differential absorption LiDAR techniques for detecting algal biomass with applications to Arctic substrates
Author(s): Eric Rehm; Fraser Dalgleish; Matthieu Huot; José Lagunas-Morales; Simon Lambert-Girard; Stefania Matteoli; Philippe Archambault; Michel Piché
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Paper Abstract

The physical and biological properties of Arctic ice and coastal benthos remain poorly understood due to the difficulty of accessing these substrates in ice-covered waters. A LiDAR system deployed on an autonomous underwater vehicle (AUV) can interrogate these 3D surfaces for physical and biological properties simultaneously. Using our understanding of the absorption, inelastic scattering (fluorescent), and elastic scattering properties of photosynthetic micro- and macroalgae excited by lasers, we present results of in situ tank tests using a two-wavelength (473 nm, 532 nm) prototype to evaluate both fluorosensor and differential absorption (DIAL) approaches using reflectance standards and selected macroalgae as targets.

Paper Details

Date Published: 25 May 2018
PDF: 15 pages
Proc. SPIE 10631, Ocean Sensing and Monitoring X, 106310Z (25 May 2018); doi: 10.1117/12.2302381
Show Author Affiliations
Eric Rehm, Univ. Laval-CNRS, Takuvik (Canada)
Fraser Dalgleish, Harbor Branch Oceanographic Institute at Florida Atlantic Univ. (United States)
Matthieu Huot, Univ. Laval-CNRS, Takuvik (Canada)
José Lagunas-Morales, Univ. Laval-CNRS, Takuvik (Canada)
Simon Lambert-Girard, Univ. Laval-CNRS, Takuvik (Canada)
Stefania Matteoli, National Research Council (Italy)
Philippe Archambault, Univ. Laval-CNRS, Takuvik (Canada)
Michel Piché, Univ. Laval-CNRS, Takuvik (Canada)

Published in SPIE Proceedings Vol. 10631:
Ocean Sensing and Monitoring X
Weilin "Will" Hou; Robert A. Arnone, Editor(s)

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