Skip to main content

Research Repository

Advanced Search

Integrated fiber optic spectrally resolved downwelling irradiance sensor for pushbroom spectrometers

Graham, Christopher; Girkin, John M.; Bourgenot, Cyril

Integrated fiber optic spectrally resolved downwelling irradiance sensor for pushbroom spectrometers Thumbnail


Authors



Abstract

We present an integrated fiber optic spectrally resolved downwelling irradiance sensor for pushbroom hyperspectral imagers. The system comprises of a cosine corrector and custom fiber patch cables, collecting the ambient light in a large solid angle and feeding it directly to the entrance slit of the spectrometer. The system enables simultaneous measurement of downwelling and upwelling irradiance using the main hyperspectral camera sensor. As a demonstration, the spectral reflectance of a soil sample was measured with a RMSE of 8.4%, a significant improvement on the RMSE of 54% found without correction. At a weight of approximately 10 grams, this system provides a substantial weight saving over standalone incident light sensing instruments.

Citation

Graham, C., Girkin, J. M., & Bourgenot, C. (2022). Integrated fiber optic spectrally resolved downwelling irradiance sensor for pushbroom spectrometers. Optics Express, 30(25), 45592-45598. https://doi.org/10.1364/oe.477699

Journal Article Type Article
Acceptance Date Nov 16, 2022
Online Publication Date Nov 30, 2022
Publication Date 2022
Deposit Date Jan 9, 2023
Publicly Available Date Jan 9, 2023
Journal Optics Express
Electronic ISSN 1094-4087
Publisher Optica
Peer Reviewed Peer Reviewed
Volume 30
Issue 25
Pages 45592-45598
DOI https://doi.org/10.1364/oe.477699

Files

Published Journal Article (58.1 Mb)
PDF

Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/

Copyright Statement
Published by Optica Publishing Group under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.







You might also like



Downloadable Citations