A dual-band parametric method for angular normalization of land surface thermal radiation for single-angle thermal infrared image

发布时间： 2025-10-25 点击次数：

• 影响因子：11.4
• DOI码：10.1016/j.rse.2025.115089
• 发表刊物：Remote Sensing of Environment
• 关键字：Thermal radiation directionality Land surface temperature Angular normalization
• 摘要：The thermal radiation directionality (TRD) effect is a critical factor influencing the global application of thermal infrared remote sensing data, and limiting the comparison of long-term temporal data series. The inherent inconsistency of thermal radiation data acquired from different observation angles poses significant challenges for data utilization and analysis. To address this issue, this study develops a dual-band parametric angular normalization (DPAN) method based on physical model. The key parameters for angular normalization are firstly derived through theoretical analysis, then empirical estimation formulas for these parameters are established. Analysis based on simulation dataset demonstrates that the DPAN method can correct an average of 62 % of thermal radiation angular effects, with maximum corrections reaching 66–68 % and minimum corrections approximately 47–49 % under various input parameter errors. A wavelength difference of 2–3.5 μm is found to be the best for the dual-band setting to apply the DPAN method. When applied to actual Moderate Resolution Imaging Spectroradiometer (MODIS) data, the method achieves a radiative brightness temperature root mean square difference (RMSD) of approximately 1.3 K, with maximum correction exceeding 8 K. Notably, temperature corrections typically surpass 1 K when the view zenith angle exceeds 40°. In summary, the DPAN method requires neither multi-angle nor multi-temporal observations, enabling direct application to any satellite dataset with at least two thermal infrared bands. These characteristics satisfy the essential requirements for operational angular normalization of satellite-derived land surface temperature products, indicating strong potential for widespread implementation.
• 论文类型：期刊论文
• 论文编号：115089
• 学科门类：理学
• 一级学科：地理学
• 文献类型：J
• 卷号：332
• 页面范围：115089
• 是否译文：否
• 收录刊物：SCI
• 发布期刊链接：https://www.sciencedirect.com/science/article/pii/S0034425725004936?via%3Dihub
• 第一作者：Yuanjian Teng
• 通讯作者：Huazhong Ren
• 全部作者：Songyi Li,Fengguang Li,Yunzhu Tao,Xue Zhong,Qiming Qin
• 发表时间：2025-10-13