Non-Contact Measurement of the Spectral Emissivity through Active/Passive Synergy of CO2 Laser at 10.6 mu m and 102F FTIR (Fourier Transform Infrared) Spectrometer
文献类型：SCI/SSCI论文
| 作者 | Zhang R. H.; Su, H. B.; Tian, J.; Mi, S. J.; Li, Z. L.; Wang, LX |
| 发表日期 | 2016 |
| 关键词 | 10.6 mu m single-band CO2 laser temperature-emissivity retrieval active/passive synergistic measurement and inversion land-surface-temperature polarized bidirectional scattering 2-step physical algorithm bare soils simultaneous retrieval atmospheric profiles water-vapor spectroradiometer images instrument |
| 英文摘要 | In the inversion of land surface temperature (LST) from satellite data, obtaining the information on land surface emissivity is most challenging. How to solve both the emissivity and the LST from the underdetermined equations for thermal infrared radiation is a hot research topic related to quantitative thermal infrared remote sensing. The academic research and practical applications based on the temperature-emissivity retrieval algorithms show that directly measuring the emissivity of objects at a fixed thermal infrared waveband is an important way to close the underdetermined equations for thermal infrared radiation. Based on the prior research results of both the authors and others, this paper proposes a new approach of obtaining the spectral emissivity of the object at 8-14 mu m with a single-band CO2 laser at 10.6 mu m and a 102F FTIR spectrometer. Through experiments, the spectral emissivity of several key samples, including aluminum plate, iron plate, copper plate, marble plate, rubber sheet, and paper board, at 8-14 mu m is obtained, and the measured data are basically consistent with the hemispherical emissivity measurement by a Nicolet iS10 FTIR spectrometer for the same objects. For the rough surface of materials, such as marble and rusty iron, the RMSE of emissivity is below 0.05. The differences in the field of view angle and in the measuring direction between the Nicolet FTIR method and the method proposed in the paper, and the heterogeneity in the degree of oxidation, polishing and composition of the samples, are the main reasons for the differences of the emissivities between the two methods. |
| 出处 | Sensors |
| 卷 | 16 |
| 期 | 7 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1424-8220 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/43926]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_生态网络实验室 |
| 推荐引用方式 GB/T 7714 | Zhang R. H.,Su, H. B.,Tian, J.,et al. Non-Contact Measurement of the Spectral Emissivity through Active/Passive Synergy of CO2 Laser at 10.6 mu m and 102F FTIR (Fourier Transform Infrared) Spectrometer. 2016. |
入库方式： OAI收割
来源：地理科学与资源研究所
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