{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,4]],"date-time":"2025-12-04T18:33:59Z","timestamp":1764873239205,"version":"build-2065373602"},"reference-count":30,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2012,12,14]],"date-time":"2012-12-14T00:00:00Z","timestamp":1355443200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>A new instrument has been setup at the Centre de Recherche Public-Gabriel Lippmann to measure spectral emissivity values of typical earth surface samples in the 8 to 12 \u03bcm range at a spectral resolution of up to 0.25 cm\u22121. The instrument is based on a Hyper-Cam-LW built by Telops with a modified fore-optic for vertical measurements at ground level and a platform for airborne acquisitions. A processing chain has been developed to convert calibrated radiances into emissivity spectra. Repeat measurements taken on samples of sandstone show a high repeatability of the system with a wavelength dependent standard deviation of less than 0.01 (1.25% of the mean emissivity). Evaluation of retrieved emissivity spectra indicates good agreement with reference measurements. The new instrument facilitates the assessment of the spatial variability of emissivity spectra of material surfaces\u2014at present still largely unknown\u2014at various scales from ground and airborne platforms and thus will provide new opportunities in environmental remote sensing.<\/jats:p>","DOI":"10.3390\/rs4123995","type":"journal-article","created":{"date-parts":[[2012,12,14]],"date-time":"2012-12-14T11:11:46Z","timestamp":1355483506000},"page":"3995-4009","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":39,"title":["A Hyperspectral Thermal Infrared Imaging Instrument for Natural Resources Applications"],"prefix":"10.3390","volume":"4","author":[{"given":"Martin","family":"Schlerf","sequence":"first","affiliation":[{"name":"Environnement et Agro-biotechnologies, Centre de Recherche Public-Gabriel Lippmann, 41 Rue du Brill, L-4422 Belvaux, Luxembourg"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gilles","family":"Rock","sequence":"additional","affiliation":[{"name":"Remote Sensing & Geoinformatics Department, Faculty of Geography and Geosciences, University of Trier, Behringstrasse, D-54286 Trier, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Philippe","family":"Lagueux","sequence":"additional","affiliation":[{"name":"Telops, 2600 Av. St. Jean Baptiste, Quebec City, QC G2E 6J5, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Franz","family":"Ronellenfitsch","sequence":"additional","affiliation":[{"name":"Environnement et Agro-biotechnologies, Centre de Recherche Public-Gabriel Lippmann, 41 Rue du Brill, L-4422 Belvaux, Luxembourg"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Max","family":"Gerhards","sequence":"additional","affiliation":[{"name":"Remote Sensing & Geoinformatics Department, Faculty of Geography and Geosciences, University of Trier, Behringstrasse, D-54286 Trier, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lucien","family":"Hoffmann","sequence":"additional","affiliation":[{"name":"Environnement et Agro-biotechnologies, Centre de Recherche Public-Gabriel Lippmann, 41 Rue du Brill, L-4422 Belvaux, Luxembourg"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Thomas","family":"Udelhoven","sequence":"additional","affiliation":[{"name":"Environnement et Agro-biotechnologies, Centre de Recherche Public-Gabriel Lippmann, 41 Rue du Brill, L-4422 Belvaux, Luxembourg"},{"name":"Remote Sensing & Geoinformatics Department, Faculty of Geography and Geosciences, University of Trier, Behringstrasse, D-54286 Trier, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2012,12,14]]},"reference":[{"key":"ref_1","unstructured":"Jensen, J.R. 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