Shichun Li, Teng Ren, Penghui Zhang, Yingchun Gao, Dengxin Hua, Yufeng Wang, Yuehui Song, Fei Gao. Near-Field Signal Correction and Retrieval Technique for Mie Scattering Vertical Scanning Lidar[J]. Acta Optica Sinica, 2023, 43(18): 1828001
- Acta Optica Sinica
- Vol. 43, Issue 18, 1828001 (2023)
Fig. 1. Layout of transmitting and receiving system for off-axis lidar
Fig. 2. Transmitting and receiving field of view of off-axis lidar. (a) r=rb; (b) rb<r< rt; (c) r=rt
Fig. 3. Scanning type lidar
Fig. 4. Influence of lidar parameters on overlap factors. (a) Divergence angle of laser beam; (b) field of view of receiver; (c) distance between optical axes; (d) angle between optical axes
Fig. 5. Schematic diagram of scanning correction for near-field signals
Fig. 6. Flow chart of scanning correction for near-field signals
Fig. 7. Profile retrieval and correction analysis on June 23, 2022. (a) Distance profile of extinction coefficient; (b) height profile of extinction coefficient; (c) vertical profile of extinction coefficient; (d) overlap factors
Fig. 8. Profile retrieval and correction analysis on June 24, 2022. (a) Distance profile of extinction coefficient; (b) height profile of extinction coefficient; (c) vertical profile of extinction coefficient; (d) overlap factors
Fig. 9. Correction curves of overlap factors
Fig. 10. Comparison of observation data on February 25-26, 2022 without and with correction. (a) Without correction; (b) with correction
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Table 1. Main parameters of lidar
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