High-Precision CO<sub>2</sub> Column Length Analysis on the Basis of a 1.57-μm Dual-Wavelength IPDA Lidar
For high-precision measurements of the CO<sub>2</sub> column concentration in the atmosphere with airborne integrated path differential absorption (IPDA) Lidar, the exact distance of the Lidar beam to the scattering surface, that is, the length of the column, must be measured accurately....
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MDPI AG
2020-10-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/20/20/5887 |
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| author | Xin Ma Haowei Zhang Ge Han Hao Xu Tianqi Shi Wei Gong Yue Ma Song Li |
| author_facet | Xin Ma Haowei Zhang Ge Han Hao Xu Tianqi Shi Wei Gong Yue Ma Song Li |
| author_sort | Xin Ma |
| collection | DOAJ |
| description | For high-precision measurements of the CO<sub>2</sub> column concentration in the atmosphere with airborne integrated path differential absorption (IPDA) Lidar, the exact distance of the Lidar beam to the scattering surface, that is, the length of the column, must be measured accurately. For the high-precision inversion of the column length, we propose a set of methods on the basis of the actual conditions, including autocorrelation detection, adaptive filtering, Gaussian decomposition, and optimized Levenberg–Marquardt fitting based on the generalized Gaussian distribution. Then, based on the information of a pair of laser pulses, we use the direct adjustment method of unequal precision to eliminate the error in the distance measurement. Further, the effect of atmospheric delay on distance measurements is considered, leading to further correction of the inversion results. At last, an airborne experiment was carried out in a sea area near Qinhuangdao, China on 14 March 2019. The results showed that the ranging accuracy can reach 0.9066 m, which achieved an excellent ranging accuracy on 1.57-μm IPDA Lidar and met the requirement for high-precision CO<sub>2</sub> column length inversion. |
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| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T15:32:18Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
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| series | Sensors |
| spelling | doaj.art-3cde0e0cced94ec0a444f86bf773742d2023-11-20T17:30:52ZengMDPI AGSensors1424-82202020-10-012020588710.3390/s20205887High-Precision CO<sub>2</sub> Column Length Analysis on the Basis of a 1.57-μm Dual-Wavelength IPDA LidarXin Ma0Haowei Zhang1Ge Han2Hao Xu3Tianqi Shi4Wei Gong5Yue Ma6Song Li7State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 473079, ChinaState Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 473079, ChinaSchool of Remote Sensing and Information Engineering, Wuhan University, Wuhan 473079, ChinaState Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 473079, ChinaState Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 473079, ChinaState Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 473079, ChinaSchool of Electronic Information, Wuhan University, Wuhan 473072, ChinaSchool of Electronic Information, Wuhan University, Wuhan 473072, ChinaFor high-precision measurements of the CO<sub>2</sub> column concentration in the atmosphere with airborne integrated path differential absorption (IPDA) Lidar, the exact distance of the Lidar beam to the scattering surface, that is, the length of the column, must be measured accurately. For the high-precision inversion of the column length, we propose a set of methods on the basis of the actual conditions, including autocorrelation detection, adaptive filtering, Gaussian decomposition, and optimized Levenberg–Marquardt fitting based on the generalized Gaussian distribution. Then, based on the information of a pair of laser pulses, we use the direct adjustment method of unequal precision to eliminate the error in the distance measurement. Further, the effect of atmospheric delay on distance measurements is considered, leading to further correction of the inversion results. At last, an airborne experiment was carried out in a sea area near Qinhuangdao, China on 14 March 2019. The results showed that the ranging accuracy can reach 0.9066 m, which achieved an excellent ranging accuracy on 1.57-μm IPDA Lidar and met the requirement for high-precision CO<sub>2</sub> column length inversion.https://www.mdpi.com/1424-8220/20/20/5887IPDA LidarCO<sub>2</sub>rangingdual-wavelength |
| spellingShingle | Xin Ma Haowei Zhang Ge Han Hao Xu Tianqi Shi Wei Gong Yue Ma Song Li High-Precision CO<sub>2</sub> Column Length Analysis on the Basis of a 1.57-μm Dual-Wavelength IPDA Lidar Sensors IPDA Lidar CO<sub>2</sub> ranging dual-wavelength |
| title | High-Precision CO<sub>2</sub> Column Length Analysis on the Basis of a 1.57-μm Dual-Wavelength IPDA Lidar |
| title_full | High-Precision CO<sub>2</sub> Column Length Analysis on the Basis of a 1.57-μm Dual-Wavelength IPDA Lidar |
| title_fullStr | High-Precision CO<sub>2</sub> Column Length Analysis on the Basis of a 1.57-μm Dual-Wavelength IPDA Lidar |
| title_full_unstemmed | High-Precision CO<sub>2</sub> Column Length Analysis on the Basis of a 1.57-μm Dual-Wavelength IPDA Lidar |
| title_short | High-Precision CO<sub>2</sub> Column Length Analysis on the Basis of a 1.57-μm Dual-Wavelength IPDA Lidar |
| title_sort | high precision co sub 2 sub column length analysis on the basis of a 1 57 μm dual wavelength ipda lidar |
| topic | IPDA Lidar CO<sub>2</sub> ranging dual-wavelength |
| url | https://www.mdpi.com/1424-8220/20/20/5887 |
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