Real-Time Simulation of Clear Sky Background Radiation in Gas Infrared Remote Sensing Monitoring

• DOI: 10.3390/photonics11100904
• Publication Date: 2024-09-26T15:38:34Z
• Authors: Shengquan Shu; Jianguo Liu; Liang Xu; Yuhao Wang; Yasong Deng; Yongfeng Sun
• Keywords: Interpolation; Background radiation; Line (geometry); Infrared window

During the process of infrared remote sensing monitoring, obtaining real-time measurements sky background radiation is extremely inconvenient. The current methods incur a certain amount lag. In this study, within existing theoretical framework, fast transmittance calculation method using interpolation was adopted, and simplified transmission model established. This led to development new for rapid temperature humidity retrieval. Compared line-by-line integration method, significantly improves speed by several tens times, while maintaining high level accuracy. relative deviation between results obtained those through less than 1 ‱. With proposed profile information can be retrieved from measured spectra 5 min corresponding obtained. differences calculated are smaller, making it more suitable calculating radiation. Additionally, retrieval profiles in lower atmosphere have accuracy (the mean 2 K).