Non-selective Reference Surfaces for Hyperspectral Remote Sensing in the Long-Wave Infrared Range

This article focuses on the construction of reference surfaces with the desired spectral characteristics similar to a gray body. Using wooden plywood with a rough surface and coatings of various emissivity values, surfaces with non-selective spectral properties were created. The consistency of laboratory measurement results using a reflectance spectrometer with data obtained from a hyperspectral camera was confirmed. By utilizing multiple reference surfaces with precisely known emissivity characteristics, it will be possible to accurately determine the radiation components of the measured scene’s surroundings. Although the technology of these surfaces still requires improvement, their usefulness in remote sensing measurements is undeniable. Additionally, differences in response to solar radiation between various reference surfaces provide significant information that can be used in remote sensing and material identification. Incorporating the heating dynamics of the studied objects’ surfaces is crucial for accurate measurement modeling.