| Metanet Huseynova, Gunel Celilova, Ramiz Eminov Layered infrared signature segmentation method for monitoring the surface temperature of objects |
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| Abstract. The need for highly informative detection of objects with very low radiation requires modification of detection methods using a dynamic spectrum modification strategy. The use of such indicators as temperature and emissivity makes it possible to determine the minimum detectable temperature that characterizes the requirement for the limiting capacity of thermal chambers used for the detection of thermal objects. At the same time, classical detection systems based on a fixed spectral characteristic are not able to effectively detect "stealth" objects due to the influence of factors such as the Earth's own radiation and atmospheric attenuation of optical radiation. The infrared signature of flying objects is not a static indicator and depends on factors such as the shape and size of the object, temperature, emissivity, re-reflection of external emitters, time of day, etc. For remote thermal identification of objects, it is necessary to develop relative signature characteristics of thermal objects that characterize the state of the object itself as objectively as possible, and not the sources of background radiation. However, it is often important for the identification of thermal objects to obtain not integral estimates of the IR signature of an object, but the spatial structure of this signature on the observed surface. A method of highly informative layer-by-layer infrared signature analysis is proposed, the purpose of which is to form a two-dimensional layer of spatial distribution of a certain temperature on the surface of the object. The essence of the proposed method is to form layers (segments) of a thermal image consisting of pixels with the same temperature by selecting a reference pixel and further aligning the streams from the reference and the remaining pixels by selecting the wavelengths of the latter. This alignment allows you to calculate the temperature of the remaining, non-etalon pixels and then compose layers (segments) of the analyzed thermal object. An algorithm for implementing the method is formulated. The analysis of the gain in speed achieved in the proposed method is carried out. |
| Keywords: infrared radiation, signature, temperature, object surface, speed |
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| DOI: https://doi.org/10.54381/itta2024.18 |