ON-LINE WAVELENGTH CALIBRATION OF PULSED LASER FOR CO<sub>2</sub> DIFFERENTIAL ABSORPTION LIDAR
Differential absorption lidar (DIAL) remote sensing is a promising technology for atmospheric CO<sub>2</sub> detection. However, stringent wavelength accuracy and stability are required in DIAL system. Accurate on-line wavelength calibration is a crucial procedure for retrieving atmosphe...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2016-06-01
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| Series: | The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
| Online Access: | https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLI-B1/141/2016/isprs-archives-XLI-B1-141-2016.pdf |
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| author | C. Xiang C. Xiang X. Ma X. Ma G. Han A. Liang A. Liang W. Gong W. Gong |
| author_facet | C. Xiang C. Xiang X. Ma X. Ma G. Han A. Liang A. Liang W. Gong W. Gong |
| author_sort | C. Xiang |
| collection | DOAJ |
| description | Differential absorption lidar (DIAL) remote sensing is a promising technology for atmospheric CO<sub>2</sub> detection. However, stringent wavelength accuracy and stability are required in DIAL system. Accurate on-line wavelength calibration is a crucial procedure for retrieving atmospheric CO<sub>2</sub> concentration using the DIAL, particularly when pulsed lasers are adopted in the system. Large fluctuations in the intensities of a pulsed laser pose a great challenge for accurate on-line wavelength calibration. In this paper, a wavelength calibration strategy based on multi-wavelength scanning (MWS) was proposed for accurate on-line wavelength calibration of a pulsed laser for CO<sub>2</sub> detection. The MWS conducted segmented sampling across the CO<sub>2</sub> absorption line with appropriate number of points and range of widths by using a tunable laser. Complete absorption line of CO<sub>2</sub> can be obtained through a curve fitting. Then, the on-line wavelength can be easily found at the peak of the absorption line. Furthermore, another algorithm called the energy matching was introduced in the MWS to eliminate the backlash error of tunable lasers during the process of on-line wavelength calibration. Finally, a series of tests was conducted to elevate the calibration precision of MWS. Analysis of tests demonstrated that the MWS proposed in this paper could calibrate the on-line wavelength of pulsed laser accurately and steadily. |
| first_indexed | 2024-04-12T02:16:52Z |
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| id | doaj.art-956c4c64e30f47158f493c1bfae0dcff |
| institution | Directory Open Access Journal |
| issn | 1682-1750 2194-9034 |
| language | English |
| last_indexed | 2024-04-12T02:16:52Z |
| publishDate | 2016-06-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
| spelling | doaj.art-956c4c64e30f47158f493c1bfae0dcff2022-12-22T03:52:13ZengCopernicus PublicationsThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences1682-17502194-90342016-06-01XLI-B114114610.5194/isprs-archives-XLI-B1-141-2016ON-LINE WAVELENGTH CALIBRATION OF PULSED LASER FOR CO<sub>2</sub> DIFFERENTIAL ABSORPTION LIDARC. Xiang0C. Xiang1X. Ma2X. Ma3G. Han4A. Liang5A. Liang6W. Gong7W. Gong8State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Luoyu Road 129, Wuhan 430079, ChinaCollaborative Innovation Center for Geospatial Technology, Luoyu Road 129, Wuhan 430079, ChinaState Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Luoyu Road 129, Wuhan 430079, ChinaCollaborative Innovation Center for Geospatial Technology, Luoyu Road 129, Wuhan 430079, ChinaInternational School of Software, Wuhan University, Luoyu Road 129,Wuhan 430079, ChinaState Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Luoyu Road 129, Wuhan 430079, ChinaCollaborative Innovation Center for Geospatial Technology, Luoyu Road 129, Wuhan 430079, ChinaState Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Luoyu Road 129, Wuhan 430079, ChinaCollaborative Innovation Center for Geospatial Technology, Luoyu Road 129, Wuhan 430079, ChinaDifferential absorption lidar (DIAL) remote sensing is a promising technology for atmospheric CO<sub>2</sub> detection. However, stringent wavelength accuracy and stability are required in DIAL system. Accurate on-line wavelength calibration is a crucial procedure for retrieving atmospheric CO<sub>2</sub> concentration using the DIAL, particularly when pulsed lasers are adopted in the system. Large fluctuations in the intensities of a pulsed laser pose a great challenge for accurate on-line wavelength calibration. In this paper, a wavelength calibration strategy based on multi-wavelength scanning (MWS) was proposed for accurate on-line wavelength calibration of a pulsed laser for CO<sub>2</sub> detection. The MWS conducted segmented sampling across the CO<sub>2</sub> absorption line with appropriate number of points and range of widths by using a tunable laser. Complete absorption line of CO<sub>2</sub> can be obtained through a curve fitting. Then, the on-line wavelength can be easily found at the peak of the absorption line. Furthermore, another algorithm called the energy matching was introduced in the MWS to eliminate the backlash error of tunable lasers during the process of on-line wavelength calibration. Finally, a series of tests was conducted to elevate the calibration precision of MWS. Analysis of tests demonstrated that the MWS proposed in this paper could calibrate the on-line wavelength of pulsed laser accurately and steadily.https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLI-B1/141/2016/isprs-archives-XLI-B1-141-2016.pdf |
| spellingShingle | C. Xiang C. Xiang X. Ma X. Ma G. Han A. Liang A. Liang W. Gong W. Gong ON-LINE WAVELENGTH CALIBRATION OF PULSED LASER FOR CO<sub>2</sub> DIFFERENTIAL ABSORPTION LIDAR The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
| title | ON-LINE WAVELENGTH CALIBRATION OF PULSED LASER FOR CO<sub>2</sub> DIFFERENTIAL ABSORPTION LIDAR |
| title_full | ON-LINE WAVELENGTH CALIBRATION OF PULSED LASER FOR CO<sub>2</sub> DIFFERENTIAL ABSORPTION LIDAR |
| title_fullStr | ON-LINE WAVELENGTH CALIBRATION OF PULSED LASER FOR CO<sub>2</sub> DIFFERENTIAL ABSORPTION LIDAR |
| title_full_unstemmed | ON-LINE WAVELENGTH CALIBRATION OF PULSED LASER FOR CO<sub>2</sub> DIFFERENTIAL ABSORPTION LIDAR |
| title_short | ON-LINE WAVELENGTH CALIBRATION OF PULSED LASER FOR CO<sub>2</sub> DIFFERENTIAL ABSORPTION LIDAR |
| title_sort | on line wavelength calibration of pulsed laser for co sub 2 sub differential absorption lidar |
| url | https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLI-B1/141/2016/isprs-archives-XLI-B1-141-2016.pdf |
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