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30 September 2013 Comparison of measured and simulated IR signals from a scaled model ship
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Abstract
The goal of the present study is to develop a S/W that predicts infrared signals from objects synthetically by considering the internal and external factors, such as surface properties, internal heat sources, solar irradiations, atmospheric temperature, etc. As a part of developing a S/W, this paper contains some results of the measured and simulated IR signals for comparison and validation. The scaled model ship used in this study is made of 3mm-thick steel and 1.5m long. It has virtual internal heat sources that are made of a brass block with a heater. The experiments are performed under an indoor environment to exclude the external effects such as solar irradiance, wind effect, etc. The radiance from the ship is mainly due to the surface temperature because the effects of solar and wind are excluded. Also the IR signals are collected by the IR cameras which are operated at MWIR(3.7~5.1μm ) and LWIR(7.5~9.1 μm), respectively. At the same time, the atmospheric temperature and the relative humidity are measured to use for input conditions for calculation. The surface temperature and the IR signals within the two wavelengths are calculated by using the S/W developed in this study considering the 3D ship model, the internal heater temperature, and the atmospheric conditions. The temperature and IR signals from the scaled model ship obtained from measurements and from the S/W developed in this study are compared each other by showing fairly good agreements with each other.
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Dong-Geon Kim, Kuk-Il Han, Jun-Hyuk Choi, and Tae-Kuk Kim "Comparison of measured and simulated IR signals from a scaled model ship", Proc. SPIE 8857, Signal and Data Processing of Small Targets 2013, 88570M (30 September 2013); https://doi.org/10.1117/12.2024155
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