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Proceedings Paper

Land surface temperature and emissivity retrieval from time-series thermal infrared data
Author(s): Yonggang Qian; Ning Wang; Yaokai Liu; Li Kun; Caixia Gao; Shi Qiu; Yuanyuan Qiu; Hua Wu; Qingfeng Shen; Chuanrong Li; Lili Tang
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Paper Abstract

This work addressed the simultaneous retrieval of Land Surface Temperature (LST) and Land Surface Emissivity (LSE) from time-series thermal infrared data. On basis of the assumption that the time-series LSTs can be described by a piecewise linear function, a new method has been proposed to simultaneously retrieve LST and LSE from atmospherically corrected time-series thermal infrared data using LST linear constraint. A detailed analysis has been performed against various errors, including error introduced by algorithm assumption, instrument noise, initial emissivity, etc. The modeling errors of the proposed method from the simulated data are less than 0.04 K for temperature and less than 6.76E-4 for emissivity. The proposed method is more noise immune than the existing methods. Even with a NEΔT of 0.5 K, the RMSE of LST is observed to be only 0.13K, and that of LSE is 1.8E-3. In addition, our proposed method is simple and efficient and does not encounter the problem of singular values unlike the existing methods.

Paper Details

Date Published: 11 April 2019
PDF: 6 pages
Proc. SPIE 11028, Optical Sensors 2019, 1102833 (11 April 2019); doi: 10.1117/12.2520411
Show Author Affiliations
Yonggang Qian, Academy of Opto-Electronics (China)
Ning Wang, Academy of Opto-Electronics (China)
Yaokai Liu, Academy of Opto-Electronics (China)
Li Kun, Academy of Opto-Electronics (China)
Caixia Gao, Academy of Opto-Electronics (China)
Shi Qiu, Academy of Opto-Electronics (China)
Yuanyuan Qiu, Academy of Opto-Electronics (China)
Hua Wu, Institute of Geographic Sciences and Natural Resources Research (China)
Qingfeng Shen, The First Academy of China Aerospace Science and Technology Corp. (China)
Chuanrong Li, Academy of Opto-Electronics (China)
Lili Tang, Academy of Opto-Electronics (China)

Published in SPIE Proceedings Vol. 11028:
Optical Sensors 2019
Francesco Baldini; Jiri Homola; Robert A. Lieberman, Editor(s)

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