Non-Contact Measurement of the Spectral Emissivity through Active/Passive Synergy of CO2 Laser at 10.6 µm and 102F FTIR (Fourier Transform Infrared) Spectrometer
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 quantita...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2016-06-01
|
| Series: | Sensors |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1424-8220/16/7/970 |
| _version_ | 1798004896399622144 |
|---|---|
| author | Ren-Hua Zhang Hong-Bo Su Jing Tian Su-Juan Mi Zhao-Liang Li |
| author_facet | Ren-Hua Zhang Hong-Bo Su Jing Tian Su-Juan Mi Zhao-Liang Li |
| author_sort | Ren-Hua Zhang |
| collection | DOAJ |
| description | 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 µm with a single-band CO2 laser at 10.6 µm 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 µm 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. |
| first_indexed | 2024-04-11T12:30:43Z |
| format | Article |
| id | doaj.art-f6a080230a9d49eaa8c0faae03a43f6f |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T12:30:43Z |
| publishDate | 2016-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-f6a080230a9d49eaa8c0faae03a43f6f2022-12-22T04:23:45ZengMDPI AGSensors1424-82202016-06-0116797010.3390/s16070970s16070970Non-Contact Measurement of the Spectral Emissivity through Active/Passive Synergy of CO2 Laser at 10.6 µm and 102F FTIR (Fourier Transform Infrared) SpectrometerRen-Hua Zhang0Hong-Bo Su1Jing Tian2Su-Juan Mi3Zhao-Liang Li4Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, ChinaDepartment of Civil, Environmental and Geomatics Engineering, Florida Atlantic University, Boca Raton, FL 33431, USAKey Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, ChinaKey Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, ChinaKey Laboratory of Agri-informatics, Ministry of Agriculture/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, ChinaIn 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 µm with a single-band CO2 laser at 10.6 µm 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 µm 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.http://www.mdpi.com/1424-8220/16/7/97010.6 µm single-band CO2 lasertemperature-emissivity retrievalactive/passive synergistic measurement and inversion |
| spellingShingle | Ren-Hua Zhang Hong-Bo Su Jing Tian Su-Juan Mi Zhao-Liang Li Non-Contact Measurement of the Spectral Emissivity through Active/Passive Synergy of CO2 Laser at 10.6 µm and 102F FTIR (Fourier Transform Infrared) Spectrometer Sensors 10.6 µm single-band CO2 laser temperature-emissivity retrieval active/passive synergistic measurement and inversion |
| title | Non-Contact Measurement of the Spectral Emissivity through Active/Passive Synergy of CO2 Laser at 10.6 µm and 102F FTIR (Fourier Transform Infrared) Spectrometer |
| title_full | Non-Contact Measurement of the Spectral Emissivity through Active/Passive Synergy of CO2 Laser at 10.6 µm and 102F FTIR (Fourier Transform Infrared) Spectrometer |
| title_fullStr | Non-Contact Measurement of the Spectral Emissivity through Active/Passive Synergy of CO2 Laser at 10.6 µm and 102F FTIR (Fourier Transform Infrared) Spectrometer |
| title_full_unstemmed | Non-Contact Measurement of the Spectral Emissivity through Active/Passive Synergy of CO2 Laser at 10.6 µm and 102F FTIR (Fourier Transform Infrared) Spectrometer |
| title_short | Non-Contact Measurement of the Spectral Emissivity through Active/Passive Synergy of CO2 Laser at 10.6 µm and 102F FTIR (Fourier Transform Infrared) Spectrometer |
| title_sort | non contact measurement of the spectral emissivity through active passive synergy of co2 laser at 10 6 µm and 102f ftir fourier transform infrared spectrometer |
| topic | 10.6 µm single-band CO2 laser temperature-emissivity retrieval active/passive synergistic measurement and inversion |
| url | http://www.mdpi.com/1424-8220/16/7/970 |
| work_keys_str_mv | AT renhuazhang noncontactmeasurementofthespectralemissivitythroughactivepassivesynergyofco2laserat106μmand102fftirfouriertransforminfraredspectrometer AT hongbosu noncontactmeasurementofthespectralemissivitythroughactivepassivesynergyofco2laserat106μmand102fftirfouriertransforminfraredspectrometer AT jingtian noncontactmeasurementofthespectralemissivitythroughactivepassivesynergyofco2laserat106μmand102fftirfouriertransforminfraredspectrometer AT sujuanmi noncontactmeasurementofthespectralemissivitythroughactivepassivesynergyofco2laserat106μmand102fftirfouriertransforminfraredspectrometer AT zhaoliangli noncontactmeasurementofthespectralemissivitythroughactivepassivesynergyofco2laserat106μmand102fftirfouriertransforminfraredspectrometer |