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A “Skylight” Simulator for HWIL Simulation of Hyperspectral Remote Sensing

Even though digital simulation technology has been widely used in the last two decades, hardware-in-the-loop (HWIL) simulation is still an indispensable method for spectral uncertainty research of ground targets. However, previous facilities mainly focus on the simulation of panchromatic imaging. Th...

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Autores principales: Zhao, Huijie, Cui, Bolun, Jia, Guorui, Li, Xudong, Zhang, Chao, Zhang, Xinyang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5750798/
https://www.ncbi.nlm.nih.gov/pubmed/29211004
http://dx.doi.org/10.3390/s17122829
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author Zhao, Huijie
Cui, Bolun
Jia, Guorui
Li, Xudong
Zhang, Chao
Zhang, Xinyang
author_facet Zhao, Huijie
Cui, Bolun
Jia, Guorui
Li, Xudong
Zhang, Chao
Zhang, Xinyang
author_sort Zhao, Huijie
collection PubMed
description Even though digital simulation technology has been widely used in the last two decades, hardware-in-the-loop (HWIL) simulation is still an indispensable method for spectral uncertainty research of ground targets. However, previous facilities mainly focus on the simulation of panchromatic imaging. Therefore, neither the spectral nor the spatial performance is enough for hyperspectral simulation. To improve the accuracy of illumination simulation, a new dome-like skylight simulator is designed and developed to fit the spatial distribution and spectral characteristics of a real skylight for the wavelength from 350 nm to 2500 nm. The simulator’s performance was tested using a spectroradiometer with different accessories. The spatial uniformity is greater than 0.91. The spectral mismatch decreases to 1/243 of the spectral mismatch of the Imagery Simulation Facility (ISF). The spatial distribution of radiance can be adjusted, and the accuracy of the adjustment is greater than 0.895. The ability of the skylight simulator is also demonstrated by comparing radiometric quantities measured in the skylight simulator with those in a real skylight in Beijing.
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spelling pubmed-57507982018-01-10 A “Skylight” Simulator for HWIL Simulation of Hyperspectral Remote Sensing Zhao, Huijie Cui, Bolun Jia, Guorui Li, Xudong Zhang, Chao Zhang, Xinyang Sensors (Basel) Article Even though digital simulation technology has been widely used in the last two decades, hardware-in-the-loop (HWIL) simulation is still an indispensable method for spectral uncertainty research of ground targets. However, previous facilities mainly focus on the simulation of panchromatic imaging. Therefore, neither the spectral nor the spatial performance is enough for hyperspectral simulation. To improve the accuracy of illumination simulation, a new dome-like skylight simulator is designed and developed to fit the spatial distribution and spectral characteristics of a real skylight for the wavelength from 350 nm to 2500 nm. The simulator’s performance was tested using a spectroradiometer with different accessories. The spatial uniformity is greater than 0.91. The spectral mismatch decreases to 1/243 of the spectral mismatch of the Imagery Simulation Facility (ISF). The spatial distribution of radiance can be adjusted, and the accuracy of the adjustment is greater than 0.895. The ability of the skylight simulator is also demonstrated by comparing radiometric quantities measured in the skylight simulator with those in a real skylight in Beijing. MDPI 2017-12-06 /pmc/articles/PMC5750798/ /pubmed/29211004 http://dx.doi.org/10.3390/s17122829 Text en © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhao, Huijie
Cui, Bolun
Jia, Guorui
Li, Xudong
Zhang, Chao
Zhang, Xinyang
A “Skylight” Simulator for HWIL Simulation of Hyperspectral Remote Sensing
title A “Skylight” Simulator for HWIL Simulation of Hyperspectral Remote Sensing
title_full A “Skylight” Simulator for HWIL Simulation of Hyperspectral Remote Sensing
title_fullStr A “Skylight” Simulator for HWIL Simulation of Hyperspectral Remote Sensing
title_full_unstemmed A “Skylight” Simulator for HWIL Simulation of Hyperspectral Remote Sensing
title_short A “Skylight” Simulator for HWIL Simulation of Hyperspectral Remote Sensing
title_sort “skylight” simulator for hwil simulation of hyperspectral remote sensing
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5750798/
https://www.ncbi.nlm.nih.gov/pubmed/29211004
http://dx.doi.org/10.3390/s17122829
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