Thermal contrast detected with a thermal detector |
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| Institution: | 1. - University of West Bohemia, Univerzitní 2732/8, 301 00, Plzeň, Czech Republic;2. - Tomsk Polytechnic University, 30, Lenin Avenue, 634050, Tomsk, Russia;3. - Tomsk State University, 30, Lenin Avenue, 634050, Tomsk, Russia;1. Shanghai Institute of Applied Mathematics and Mechanics, Shanghai Key Laboratory of Mechanics in Energy Engineering, School of Mechanics and Engineering Science, Shanghai University, Shanghai 200444, China;2. Huzhou University, School of Engineering, 759 Second Ring Road East, Huzhou 313000, China;3. State-Owned Changhong Machinery Factory, Guilin 541002, China;1. College of Light Industry, Harbin University of Commerce, Harbin 150028, China;2. School of Mechanical Engineering, Heilongjiang University of Science and Technology, Harbin 150022, China;1. Laboratoire de Génie Civil et GéoEnvironnement, PRES Lille Nord de France, France;2. Faculté des Sciences Appliquées (FSA), Technoparc Futura, 62400 Béthune, France;3. Institut Universitaire de Technologie (IUT), 1230 rue de l’université, 62400 Béthune, France;1. Department of Civil, Environmental, and Construction Engineering, University of Central Florida, Orlando, FL, USA;2. West Nippon Expressway Company Limited (NEXCO-West), Dojima Avanza 19F, 1-6-20 Dojima, Kita-ku, Osaka 530-0003, Japan;3. Mugla Sitki Kocman University, Turkey;4. Department of Civil, Environmental, and Construction Engineering, University of Central Florida, 12800 Pegasus Drive, Suite 211, Orlando, FL, USA |
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| Abstract: | We show that the thermal contrast detected in a wavelength interval with a thermal detector consists of two terms. The first term agrees with the previously published results. The second term represents the contribution of the temperature-dependent emissivity. Neglecting this term results in approximately 20% error for traditional room temperature applications. For the case of remote crop-monitoring, the contribution of the emissivity changes to the detected thermal contrast is even more important: the infection of the vegetation results in the modification of its emissivity, its temperature and its change of emissivity with temperature. |
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