Radiometric and design model for the tunable light-guide image processing snapshot spectrometer (TuLIPSS)

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dc.citation.firstpage30174
dc.citation.issueNumber19
dc.citation.journalTitleOptics Express
dc.citation.lastpage30197
dc.citation.volumeNumber29
dc.contributor.authorZheng, Desheng
dc.contributor.authorFlynn, Christopher
dc.contributor.authorStoian, Razvan I.
dc.contributor.authorLu, Jiawei
dc.contributor.authorCao, Haimu
dc.contributor.authorAlexander, David
dc.contributor.authorTkaczyk, Tomasz S.
dc.contributor.authorTkaczyk, Tomasz S.
dc.date.accessioned2021-09-21T15:37:56Z
dc.date.available2021-09-21T15:37:56Z
dc.date.issued2021
dc.description.abstractThe tunable light-guide image processing snapshot spectrometer (TuLIPSS) is a novel remote sensing instrument that can capture a spectral image cube in a single snapshot. The optical modelling application for the absolute signal intensity on a single pixel of the sensor in TuLIPSS has been developed through a numerical simulation of the integral performance of each optical element in the The tunable light-guide image processing snapshot spectrometer (TuLIPSS) is a novel remote sensing instrument that can capture a spectral image cube in a single snapshot. The optical modelling application for the absolute signal intensity on a single pixel of the sensor in TuLIPSS has been developed through a numerical simulation of the integral performance of each optical element in the TuLIPSS system. The absolute spectral intensity of TuLIPSS can be determined either from the absolute irradiance of the observed surface or from the tabulated spectral reflectance of various land covers and by the application of a global irradiance approach. The model is validated through direct comparison of the simulated results with observations. Based on tabulated spectral reflectance, the deviation between the simulated results and the measured observations is less than 5% of the spectral light flux across most of the detection bandwidth for a Lambertian-like surface such as concrete. Additionally, the deviation between the simulated results and the measured observations using global irradiance information is less than 10% of the spectral light flux across most of the detection bandwidth for all surfaces tested. This optical modelling application of TuLIPSS can be used to assist the optimal design of the instrument and explore potential applications. The influence of the optical components on the light throughput is discussed with the optimal design being a compromise among the light throughput, spectral resolution, and cube size required by the specific application under consideration. The TuLIPSS modelling predicts that, for the current optimal low-cost configuration, the signal to noise ratio can exceed 10 at 10 ms exposure time, even for land covers with weak reflectance such as asphalt and water. Overall, this paper describes the process by which the optimal design is achieved for particular applications and directly connects the parameters of the optical components to the TuLIPSS performance.
dc.identifier.citationZheng, Desheng, Flynn, Christopher, Stoian, Razvan I., et al.. "Radiometric and design model for the tunable light-guide image processing snapshot spectrometer (TuLIPSS)." <i>Optics Express,</i> 29, no. 19 (2021) Optical Society of America: 30174-30197. https://doi.org/10.1364/OE.435733.
dc.identifier.digitaloe-29-19-30174
dc.identifier.doihttps://doi.org/10.1364/OE.435733
dc.identifier.urihttps://hdl.handle.net/1911/111394
dc.language.isoeng
dc.publisherOptical Society of America
dc.rightsPublished under the terms of the OSA Open Access Publishing Agreement
dc.rights.urihttps://www.osapublishing.org/library/license_v1.cfm#VOR-OA
dc.titleRadiometric and design model for the tunable light-guide image processing snapshot spectrometer (TuLIPSS)
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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